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mysql特定时间运行速度变慢的问题一例

作者：三少 编辑： 晓熊 2010-08-04 17:12 来源：www.ora
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【IT168 技术文档】　　今天开始处理我们的后台数据库中的一个mysql的问题，问题症状是，每天有个不固定的时间，整个系统的sql执行会非常慢，如果你不理他，过会就自己好了。

　　简单分析了下，那个系统就两个表，被设计成了mysql cluster模式。

　　在slow log中有如下内容： 

1 ………
2
3 Count: 3568  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), session[session]@localhost
4 # Query_time: N.N  Lock_time: N.N Rows_sent: N  Rows_examined: N
5 SET timestamp=N;
6 select * from session where sky_id=N
7 Count: 284  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), session[session]@localhost
8 # Query_time: N.N  Lock_time: N.N Rows_sent: N  Rows_examined: N
9 SET timestamp=N;
10 delete from session where sky_id=N
11 Count: 690  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), session[session]@localhost
12 # Query_time: N.N  Lock_time: N.N Rows_sent: N  Rows_examined: N
13 SET timestamp=N;
14 insert into session(sky_id, user_name, nick_name, nick_name1, gender, age, portrait_id, token, province, city, pos_code, pos_desc, acc_esbaddr, acc_session_index, acc_type, ip, alive_check, rand_tag, last_oltime, logintime) values(N, ‘S’, ‘S’, ‘S’, N, N, N, N, ‘S’, ‘S’, N, ‘S’, N, N, N, ‘S’, N, N, N, N)
15 Count: 1572  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), session[session]@localhost
16 # Query_time: N.N  Lock_time: N.N Rows_sent: N  Rows_examined: N
17 SET timestamp=N;
18 select * from session where sky_id in (N,N)
19 Count: 3568  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), session[session]@localhost  # Query_time: N.N  Lock_time: N.N Rows_sent: N  Rows_examined: N  SET timestamp=N;  select * from session where sky_id=N
20 Count: 284  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), session[session]@localhost  # Query_time: N.N  Lock_time: N.N Rows_sent: N  Rows_examined: N  SET timestamp=N;  delete from session where sky_id=N
21 Count: 690  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), session[session]@localhost  # Query_time: N.N  Lock_time: N.N Rows_sent: N  Rows_examined: N  SET timestamp=N;  insert into session(sky_id, user_name, nick_name, nick_name1, gender, age, portrait_id, token, province, city, pos_code, pos_desc, acc_esbaddr, acc_session_index, acc_type, ip, alive_check, rand_tag, last_oltime, logintime) values(N, ‘S’, ‘S’, ‘S’, N, N, N, N, ‘S’, ‘S’, N, ‘S’, N, N, N, ‘S’, N, N, N, N)
22 Count: 1572  Time=0.00s (0s)  Lock=0.00s (0s)  Rows=0.0 (0), session[session]@localhost  # Query_time: N.N  Lock_time: N.N Rows_sent: N  Rows_examined: N  SET timestamp=N;  select * from session where sky_id in (N,N)
23
24 ………………..

 这段代码看，执行慢最多的sql居然是在session表上的，

　　看看session表的结构 

1 mysql> desc session;
2
3 +——————-+———————+——+—–+———+——-+
4
5 | Field             | Type                | Null | Key | Default | Extra |
6
7 +——————-+———————+——+—–+———+——-+
8
9 | sky_id            | int(10) unsigned    | NO   | PRI | NULL    |       |
10
11 | user_name         | char(32)            | NO   |     | NULL    |       |
12
13 | nick_name         | char(32)            | YES  |     | NULL    |       |
14
15 | nick_name1        | char(64)            | YES  |     | NULL    |       |
16
17 | gender            | tinyint(1)          | YES  |     | NULL    |       |
18
19 | age               | int(10) unsigned    | YES  |     | NULL    |       |
20
21 | portrait_id       | int(10) unsigned    | YES  |     | NULL    |       |
22
23 | token             | int(10) unsigned    | YES  |     | NULL    |       |
24
25 | province          | char(32)            | YES  |     | NULL    |       |
26
27 | city              | char(32)            | YES  |     | NULL    |       |
28
29 | pos_code          | int(10) unsigned    | YES  |     | NULL    |       |
30
31 | pos_desc          | varchar(64)         | YES  |     | NULL    |       |
32
33 | acc_esbaddr       | int(10) unsigned    | YES  |     | NULL    |       |
34
35 | acc_session_index | int(10) unsigned    | YES  |     | NULL    |       |
36
37 | acc_type          | tinyint(3) unsigned | YES  |     | NULL    |       |
38
39 | ip                | char(15)            | YES  |     | NULL    |       |
40
41 | alive_check       | int(10) unsigned    | YES  |     | NULL    |       |
42
43 | longitude         | int(11)             | YES  | MUL | NULL    |       |
44
45 | latitude          | int(11)             | YES  | MUL | NULL    |       |
46
47 | loc_desc          | varchar(64)         | YES  |     | NULL    |       |
48
49 | rand_tag          | int(11)             | YES  | MUL | NULL    |       |
50
51 | mid               | varchar(256)        | YES  |     | NULL    |       |
52
53 | last_oltime       | int(11)             | YES  |     | 0       |       |
54
55 | logintime         | int(11)             | YES  |     | 0       |       |
56
57 +——————-+———————+——+—–+———+——-+
58
59 24 rows in set (0.05 sec)

　　可以看出，sky_id上是主键。

　　再看看这个执行最慢的几个sql的执行计划： 

1 mysql>  explain select * from session where sky_id=112414853 \G;
2
3 *************************** 1. row ***************************
4
5 id: 1
6
7 select_type: SIMPLE
8
9 table: NULL
10
11 type: NULL
12
13 possible_keys: NULL
14
15 key: NULL
16
17 key_len: NULL
18
19 ref: NULL
20
21 rows: NULL
22
23 Extra: Impossible WHERE noticed after reading const tables
24
25 1 row in set (0.00 sec)
26
27 ERROR:
28
29 No query specified
30
31 mysql>
32
33 mysql>
34
35 mysql> explain select * from session where sky_id in (112414853,-1,-1) \G;
36
37 *************************** 1. row ***************************
38
39 id: 1
40
41 select_type: SIMPLE
42
43 table: session
44
45 type: range
46
47 possible_keys: PRIMARY
48
49 key: PRIMARY
50
51 key_len: 4
52
53 ref: NULL
54
55 rows: 2
56
57 Extra: Using where with pushed condition
58
59 1 row in set (0.00 sec)
60
61 ERROR:
62
63 No query specified

　　居然，既然，在主键上使用了=比较的sql，执行计划不正常。

　　这个问题，到现在我还没分析出来是为啥，不过，千万别告诉我，第一次处理mysql的问题就是bug，虽然我个人觉得很像是某个bug

　　最后，看看我的数据库的版本吧 

1 mysql> select version();
2 +——————————-+
3 | version()                     |
4 +——————————-+
5 | 5.1.27-ndb-6.3.17-cluster-gpl |
6 +——————————-+
7 1 row in set (0.01 sec)

　　嗯，还有操作系统的版本：

　　Linux 2.6.18-92.el5PAE #1 SMP 2008 i686 i686 i386 GNU/Linux

　　欢迎mysql高手，就这个问题给予建议。

　　—————————HLL的分隔线————————————————–

　　在昨天晚上的跟踪中，应用发现，出现过一次堵塞的情况，持续了大概一分多钟，幸运的是，抓取到了部分信息，不幸的是，只抓取到堵塞后期的信息。抓取到的信息如下： 

1 Tue May 25 23:50:01 CST 2010
2 | Com_delete                        | 234701644     |
3 | Com_insert                        | 273000005     |
4 | Com_select                        | 2115743023    |
5 | Com_update                        | 203911543     |
6 | Com_delete                        | 0             |
7 | Com_insert                        | 0             |
8 | Com_select                        | 0             |
9 | Com_update                        | 0             |
10 | Com_delete                        | 0             |
11 | Com_insert                        | 0             |
12 | Com_select                        | 0             |
13 | Com_update                        | 0             |
14 | Com_delete                        | 0             |
15 | Com_insert                        | 0             |
16 | Com_select                        | 0             |
17 | Com_update                        | 0             |
18 | Com_delete                        | 0             |
19 | Com_insert                        | 0             |
20 | Com_select                        | 0             |
21 | Com_update                        | 1             |
22 | Com_delete                        | 0             |
23 | Com_insert                        | 0             |
24 | Com_select                        | 0             |
25 | Com_update                        | 0             |
26 | Com_delete                        | 0             |
27 | Com_insert                        | 0             |
28 | Com_select                        | 0             |
29 | Com_update                        | 0             |
30 | Com_delete                        | 0             |
31 | Com_insert                        | 0             |
32 | Com_select                        | 0             |
33 | Com_update                        | 0             |
34 | Com_delete                        | 0             |
35 | Com_insert                        | 0             |
36 | Com_select                        | 0             |
37 | Com_update                        | 0             |
38 | Com_delete                        | 0             |
39 | Com_insert                        | 0             |
40 | Com_select                        | 0             |
41 | Com_update                        | 0             |
42 | Com_delete                        | 0             |
43 | Com_insert                        | 0             |
44 | Com_select                        | 0             |
45 | Com_update                        | 0             |
46 | Com_delete                        | 0             |
47 | Com_insert                        | 0             |
48 | Com_select                        | 0             |
49 | Com_update                        | 0             |
50 | Com_delete                        | 0             |
51 | Com_insert                        | 0             |
52 | Com_select                        | 0             |
53 | Com_update                        | 0             |
54 | Com_delete                        | 0
55 |
56 | Com_insert                        | 0             |
57 | Com_select                        | 0             |
58 | Com_update                        | 0             |
59 | Com_delete                        | 0             |
60 | Com_insert                        | 0             |
61 | Com_select                        | 0             |
62 | Com_update                        | 1             |
63 | Com_delete                        | 0             |
64 | Com_insert                        | 0             |
65 | Com_select                        | 0             |
66 | Com_update                        | 0             |
67 | Com_delete                        | 0             |
68 | Com_insert                        | 0             |
69 | Com_select                        | 0             |
70 | Com_update                        | 0             |
71 | Com_delete                        | 0             |
72 | Com_insert                        | 0             |
73 | Com_select                        | 0             |
74 | Com_update                        | 0             |
75 | Com_delete                        | 51            |
76 | Com_insert                        | 52            |
77 | Com_select                        | 170           |
78 | Com_update                        | 21            |
79 | Com_delete                        | 741           |
80 | Com_insert                        | 504           |
81 | Com_select                        | 3110          |
82 | Com_update                        | 435           |
83 Tue May 25 23:50:23 CST 2010
84

　　很明显，在这个时间段的时候，系统发生了严重的堵塞，

　　当时的processlist的信息如下： 

  1
  2 2010-05-25 23:50:01
  3 Id      User    Host    db      Command Time    State   Info
  4 1       system user                     Daemon  0       Waiting for event from ndbcluster       NULL
  5 10044   session localhost:58941 session Sleep   23              NULL
  6 10045   session localhost:58942 session Sleep   23              NULL
  7 10046   session localhost:58943 session Sleep   22              NULL
  8 10047   session localhost:58944 session Sleep   22              NULL
  9 10048   session localhost:58945 session Sleep   22              NULL
10 10049   session localhost:58946 session Sleep   22              NULL
11 10050   session localhost:58947 session Sleep   22              NULL
12 10051   session localhost:58948 session Sleep   22              NULL
13 10052   session localhost:58949 session Sleep   23              NULL
14 10053   session localhost:58950 session Sleep   23              NULL
15 10054   session localhost:58951 session Sleep   23              NULL
16 10055   session localhost:58952 session Sleep   22              NULL
17 10056   session localhost:58953 session Sleep   22              NULL
18 10057   session localhost:58954 session Sleep   23              NULL
19 10058   session localhost:58955 session Sleep   22              NULL
20 10059   session localhost:58956 session Sleep   22              NULL
21 10060   session localhost:58957 session Sleep   22              NULL
22 10061   session localhost:58958 session Sleep   23              NULL
23 10062   session localhost:58959 session Sleep   23              NULL
24 10063   session localhost:58960 session Sleep   23              NULL
25 10064   session localhost:58961 session Sleep   23              NULL
26 10065   session localhost:58962 session Sleep   22              NULL
27 10066   session localhost:58963 session Sleep   22              NULL
28 10067   session localhost:58964 session Sleep   22              NULL
29 10068   session localhost:58965 session Sleep   22              NULL
30 10069   session localhost:58966 session Sleep   23              NULL
31 10070   session localhost:58967 session Sleep   23              NULL
32 10071   session localhost:58968 session Sleep   23              NULL
33 10072   session localhost:58969 session Sleep   22              NULL
34 10073   session localhost:58970 session Sleep   22              NULL
35 10074   session localhost:58971 session Sleep   22              NULL
36 10075   session localhost:58972 session Sleep   23              NULL
37 10076   session localhost:58973 session Sleep   22              NULL
38 10077   session localhost:58974 session Sleep   23              NULL
39 10078   session localhost:58975 session Sleep   22              NULL
40 10079   session localhost:58976 session Sleep   22              NULL
41 10080   session localhost:58977 session Sleep   23              NULL
42 10081   session localhost:58978 session Sleep   22              NULL
43 10082   session localhost:58979 session Sleep   23              NULL
44 10083   session localhost:58980 session Sleep   22              NULL
45 10084   session localhost:58981 session Sleep   22              NULL
46 10085   session localhost:58982 session Sleep   22              NULL
47 10086   session localhost:58983 session Sleep   22              NULL
48 10087   session localhost:58984 session Sleep   22              NULL
49 10088   session localhost:58985 session Sleep   22              NULL
50 10089   session localhost:58986 session Sleep   22              NULL
51 10090   session localhost:58987 session Sleep   22              NULL
52 10091   session localhost:58988 session Sleep   23              NULL
53 10092   session localhost:58989 session Sleep   22              NULL
54 10093   session localhost:58990 session Sleep   23              NULL
55 10094   session localhost:58991 session Sleep   22              NULL
56 10095   session localhost:58992 session Sleep   23              NULL
57 10096   session localhost:58993 session Sleep   23              NULL
58 10097   session localhost:58994 session Sleep   23              NULL
59 10098   session localhost:58995 session Sleep   22              NULL
60 10099   session localhost:58996 session Sleep   23              NULL
61 10100   session localhost:58997 session Sleep   22              NULL
62 10101   session localhost:58998 session Sleep   22              NULL
63 10102   session localhost:58999 session Sleep   22              NULL
64 10103   session localhost:59000 session Sleep   23              NULL
65 10550   session 192.168.3.29:44979      session Sleep   652             NULL
66 10566   session 192.168.3.53:45132      session Sleep   23              NULL
67 10567   session 192.168.3.53:45133      session Sleep   25              NULL
68 10568   session 192.168.3.53:45134      session Sleep   23              NULL
69 10569   session 192.168.3.53:45135      session Sleep   20              NULL
70 10570   session 192.168.3.53:45136      session Sleep   25              NULL
71 10571   session 192.168.3.53:45137      session Sleep   15              NULL
72 10572   session 192.168.3.53:45138      session Sleep   23              NULL
73 10573   session 192.168.3.53:45139      session Sleep   23              NULL
74 10574   session 192.168.3.53:45140      session Sleep   24              NULL
75 10575   session 192.168.3.53:45141      session Sleep   24              NULL
76 10576   session 192.168.3.53:45142      session Sleep   24              NULL
77 10577   session 192.168.3.53:45143      session Sleep   24              NULL
78 10578   session 192.168.3.53:45144      session Sleep   18              NULL
79 10579   session 192.168.3.53:45145      session Sleep   16              NULL
80 10580   session 192.168.3.53:45146      session Sleep   23              NULL
81 10581   session 192.168.3.53:45147      session Sleep   24              NULL
82 10582   session 192.168.3.53:45148      session Sleep   24              NULL
83 10583   session 192.168.3.53:45149      session Sleep   25              NULL
84 10584   session 192.168.3.53:45151      session Sleep   23              NULL
85 10585   session 192.168.3.53:45152      session Sleep   24              NULL
86 10586   session 192.168.3.53:45153      session Sleep   25              NULL
87 10587   session 192.168.3.53:45154      session Sleep   24              NULL
88 10588   session 192.168.3.53:45155      session Sleep   25              NULL
89 10589   session 192.168.3.53:45156      session Sleep   25              NULL
90 10590   session 192.168.3.53:45157      session Sleep   24              NULL
91 10591   session 192.168.3.53:45158      session Sleep   24              NULL
92 10592   session 192.168.3.53:45159      session Sleep   24              NULL
93 10593   session 192.168.3.53:45160      session Sleep   17              NULL
94 10594   session 192.168.3.53:45161      session Sleep   22              NULL
95 10595   session 192.168.3.53:45162      session Sleep   26              NULL
96 10596   session 192.168.3.53:45163      session Sleep   23              NULL
97 10597   session 192.168.3.53:45164      session Sleep   24              NULL
98 10598   session 192.168.3.53:51053      session Sleep   24              NULL
99 10599   session 192.168.3.53:51054      session Sleep   24              NULL
100 10600   session 192.168.3.53:51059      session Sleep   25              NULL
101 10601   session 192.168.3.53:51060      session Sleep   16              NULL
102 10602   session 192.168.3.53:51063      session Sleep   23              NULL
103 10603   session 192.168.3.53:51067      session Sleep   23              NULL
104 10604   session 192.168.3.53:51069      session Sleep   25              NULL
105 10605   session 192.168.3.53:51070      session Sleep   23              NULL
106 10606   session 192.168.3.53:51073      session Sleep   24              NULL
107 10607   session 192.168.3.53:51077      session Sleep   24              NULL
108 10608   session 192.168.3.53:51078      session Sleep   25              NULL
109 10609   session 192.168.3.53:51081      session Sleep   24              NULL
110 10610   session 192.168.3.53:51082      session Sleep   16              NULL
111 10611   session 192.168.3.53:51083      session Sleep   15              NULL
112 10612   session 192.168.3.53:51087      session Sleep   21              NULL
113 10613   session 192.168.3.53:51088      session Sleep   24              NULL
114 10614   session 192.168.3.53:51091      session Sleep   24              NULL
115 10615   session 192.168.3.53:51093      session Sleep   25              NULL
116 10616   session 192.168.3.53:51095      session Sleep   17              NULL
117 10617   session 192.168.3.53:51096      session Sleep   25              NULL
118 10618   session 192.168.3.53:51098      session Sleep   21              NULL
119 10619   session 192.168.3.53:51101      session Sleep   25              NULL
120 10620   session 192.168.3.53:51102      session Sleep   24              NULL
121 10621   session 192.168.3.53:51106      session Sleep   23              NULL
122 10622   session 192.168.3.53:51109      session Sleep   25              NULL
123 10623   session 192.168.3.53:51111      session Sleep   24              NULL
124 10624   session 192.168.3.53:51113      session Sleep   24              NULL
125 10625   session 192.168.3.53:51116      session Sleep   24              NULL
126 10626   session 192.168.3.53:51118      session Sleep   24              NULL
127 10627   session 192.168.3.53:51119      session Sleep   24              NULL
128 10628   session 192.168.3.53:51120      session Sleep   23              NULL
129 10629   session 192.168.3.53:51121      session Sleep   32              NULL
130 10630   session 192.168.3.53:51122      session Sleep   24              NULL
131 10631   session 192.168.3.53:51125      session Sleep   24              NULL
132 10632   session 192.168.3.53:51126      session Sleep   25              NULL
133 10633   session 192.168.3.53:51130      session Sleep   24              NULL
134 10634   session 192.168.3.53:51131      session Sleep   24              NULL
135 10635   session 192.168.3.53:51132      session Sleep   24              NULL
136 10636   session 192.168.3.53:51138      session Sleep   23              NULL
137 10637   session 192.168.3.53:51139      session Sleep   15              NULL
138 10638   session 192.168.3.53:51140      session Sleep   24              NULL
139 10639   session 192.168.3.53:51141      session Sleep   15              NULL
140 10640   session 192.168.3.53:51142      session Sleep   25              NULL
141 10641   session 192.168.3.53:51143      session Sleep   24              NULL
142 10642   session 192.168.3.53:51144      session Sleep   23              NULL
143 10643   session 192.168.3.53:51146      session Sleep   15              NULL
144 10644   session 192.168.3.53:51147      session Sleep   22              NULL
145 10645   session 192.168.3.53:51151      session Sleep   17              NULL
146 10646   session 192.168.3.53:51152      session Sleep   18              NULL
147 10647   session 192.168.3.53:51157      session Sleep   23              NULL
148 10648   session 192.168.3.53:51158      session Sleep   24              NULL
149 10649   session 192.168.3.53:51159      session Sleep   24              NULL
150 10650   session 192.168.3.53:51161      session Sleep   24              NULL
151 10651   session 192.168.3.53:51162      session Sleep   24              NULL
152 10652   session 192.168.3.53:51172      session Sleep   23              NULL
153 10653   session 192.168.3.53:51173      session Sleep   23              NULL
154 10654   session 192.168.3.53:51176      session Sleep   23              NULL
155 10655   session 192.168.3.53:51178      session Sleep   15              NULL
156 10656   session 192.168.3.53:51180      session Sleep   24              NULL
157 10657   session 192.168.3.53:51184      session Sleep   18              NULL
158 10658   session 192.168.3.53:51185      session Sleep   24              NULL
159 10659   session 192.168.3.53:51187      session Sleep   24              NULL
160 10660   session 192.168.3.53:51190      session Sleep   21              NULL
161 10661   session 192.168.3.53:51191      session Sleep   30              NULL
162 10663   session 192.168.3.29:40779      session Sleep   11              NULL
163 10949   root    localhost       session Query   0       NULL    show processlist
164

　　可惜的是，由于采集间隔的原因，没有采集到当时processlist的更多信息，今天开始，采集间隔为每分钟一次，我不信我看不到系统在干吗？

　　今天上午10点左右，正准备参加oracle的一个网络研讨会，结果，系统又出现了堵塞的情况。看看系统当时在干吗 

  1 mysql> show processlist;
  2 +——-+————-+——————–+———+———+——+———————————–+——————————————————————————————————+
  3 | Id    | User        | Host               | db      | Command | Time | State                             | Info                                                                                                 |
  4 +——-+————-+——————–+———+———+——+———————————–+——————————————————————————————————+
  5 |     1 | system user |                    |         | Daemon  |    0 | Waiting for event from ndbcluster | NULL                                                                                                 |
  6 | 10044 | session     | localhost:58941    | session | Query   |    1 | closing tables                    | insert into session(sky_id, user_name, nick_name, nick_name1, gender, age, portrait_id, token, provi |
  7 | 10045 | session     | localhost:58942    | session | Query   |    1 | Opening tables                    | insert into session(sky_id, user_name, nick_name, nick_name1, gender, age, portrait_id, token, provi |
  8 | 10046 | session     | localhost:58943    | session | Query   |    1 | Opening tables                    | insert into session(sky_id, user_name, nick_name, nick_name1, gender, age, portrait_id, token, provi |
  9 | 10047 | session     | localhost:58944    | session | Query   |    2 | closing tables                    | select * from session where sky_id=124845460                                                         |
10 | 10048 | session     | localhost:58945    | session | Query   |    1 | Opening tables                    | select * from session where sky_id in (111632535,0)                                                  |
11 | 10049 | session     | localhost:58946    | session | Query   |    4 | closing tables                    | select * from session where sky_id in (121003591,0)                                                  |
12 | 10050 | session     | localhost:58947    | session | Query   |    2 | closing tables                    | select * from session where sky_id in (109077997,0)                                                  |
13 | 10051 | session     | localhost:58948    | session | Query   |    1 | closing tables                    | select * from session where sky_id=120590438                                                         |
14 | 10052 | session     | localhost:58949    | session | Query   |    1 | Opening tables                    | update access set acc_state=0, update_time=1274926614 where acc_addr=38952                           |
15 | 10053 | session     | localhost:58950    | session | Query   |    2 | Opening tables                    | insert into session(sky_id, user_name, nick_name, nick_name1, gender, age, portrait_id, token, provi |
16 | 10054 | session     | localhost:58951    | session | Query   |    2 | Opening tables                    | select * from session where sky_id in (126785023,0)                                                  |
17 | 10055 | session     | localhost:58952    | session | Query   |    2 | closing tables                    | update session set pos_code=41280 , pos_desc=’??????? – ????’ where sky_id=125                       |
18 | 10056 | session     | localhost:58953    | session | Query   |    2 | closing tables                    | select * from session where sky_id=122892277                                                         |
19 | 10057 | session     | localhost:58954    | session | Query   |    1 | Opening tables                    | insert into session(sky_id, user_name, nick_name, nick_name1, gender, age, portrait_id, token, provi |
20 | 10058 | session     | localhost:58955    | session | Query   |    2 | Opening tables                    | select * from session where sky_id in (110471422,0)                                                  |
21 | 10059 | session     | localhost:58956    | session | Query   |    3 | closing tables                    | select * from session where sky_id in (112560231,0)                                                  |
22 | 10060 | session     | localhost:58957    | session | Query   |    1 | Opening tables                    | select * from session where sky_id=125792895                                                         |
23 | 10061 | session     | localhost:58958    | session | Query   |    1 | Opening tables                    | select acc_state from access where acc_addr=39045                                                    |
24 | 10062 | session     | localhost:58959    | session | Query   |    3 | closing tables                    | select * from session where sky_id in (101879399,0)                                                  |
25 | 10063 | session     | localhost:58960    | session | Query   |    1 | Opening tables                    | select * from session where sky_id=126830482                                                         |
26 | 10064 | session     | localhost:58961    | session | Query   |    1 | Opening tables                    | select * from session where sky_id=123943933                                                         |
27 | 10065 | session     | localhost:58962    | session | Query   |    1 | Opening tables                    | select * from session where sky_id=126898963                                                         |
28 | 10066 | session     | localhost:58963    | session | Query   |    1 | closing tables                    | select * from session where sky_id=109099740                                                         |
29 | 10067 | session     | localhost:58964    | session | Query   |    1 | Opening tables                    | select * from session where sky_id in (119894995,0)                                                  |
30 | 10068 | session     | localhost:58965    | session | Query   |    2 | closing tables                    | delete from session where sky_id=126556735                                                           |
31 | 10069 | session     | localhost:58966    | session | Query   |    3 | closing tables                    | select * from session where sky_id in (118097526,0)                                                  |
32 | 10070 | session     | localhost:58967    | session | Query   |    1 | Opening tables                    | select acc_state from access where acc_addr=38913                                                    |
33 | 10071 | session     | localhost:58968    | session | Query   |    1 | Opening tables                    | select * from session where sky_id=123152695                                                         |
34 | 10072 | session     | localhost:58969    | session | Query   |    2 | closing tables                    | select * from session where sky_id=124863995                                                         |
35 | 10073 | session     | localhost:58970    | session | Query   |    2 | closing tables                    | select * from session where sky_id=124845484                                                         |
36 | 10074 | session     | localhost:58971    | session | Query   |    1 | Opening tables                    | select * from session where sky_id in (123835360,0)                                                  |
37 | 10075 | session     | localhost:58972    | session | Query   |    2 | closing tables                    | select * from session where sky_id in (123975391,0)                                                  |
38 | 10076 | session     | localhost:58973    | session | Query   |    2 | closing tables                    | select * from session where sky_id in (118881656,0)                                                  |
39 | 10077 | session     | localhost:58974    | session | Query   |    2 | closing tables                    | select * from session where sky_id in (108121954,0)                                                  |
40 | 10078 | session     | localhost:58975    | session | Query   |    1 | closing tables                    | select * from session where sky_id=121395441                                                         |
41 | 10079 | session     | localhost:58976    | session | Query   |    2 | Opening tables                    | select * from session where sky_id in (123468430,0)                                                  |
42 | 10080 | session     | localhost:58977    | session | Query   |    2 | Opening tables                    | select * from session where sky_id in (120744279,0)                                                  |
43 | 10081 | session     | localhost:58978    | session | Query   |    2 | closing tables                    | select * from session where sky_id in (124513205,0)                                                  |
44 | 10082 | session     | localhost:58979    | session | Query   |    1 | Opening tables                    | select * from session where sky_id in (108639095,0)                                                  |
45 | 10083 | session     | localhost:58980    | session | Query   |    2 | Opening tables                    | select * from session where sky_id=122634881                                                         |
46 | 10084 | session     | localhost:58981    | session | Query   |    1 | Opening tables                    | select * from session where sky_id=108865098                                                         |
47 | 10085 | session     | localhost:58982    | session | Query   |    3 | closing tables                    | select * from session where sky_id in (118117228,0)                                                  |
48 | 10086 | session     | localhost:58983    | session | Query   |    2 | Opening tables                    | select * from session where sky_id in (120903327,0)                                                  |
49 | 10087 | session     | localhost:58984    | session | Query   |    5 | closing tables                    | select * from session where sky_id in (117771831,0)                                                  |
50 | 10088 | session     | localhost:58985    | session | Query   |    1 | Opening tables                    | select * from session where sky_id in (101143532,0)                                                  |
51 | 10089 | session     | localhost:58986    | session | Query   |    1 | Opening tables                    | insert into session(sky_id, user_name, nick_name, nick_name1, gender, age, portrait_id, token, provi |
52 | 10090 | session     | localhost:58987    | session | Query   |    3 | closing tables                    | select * from session where sky_id=125284199                                                         |
53 | 10091 | session     | localhost:58988    | session | Query   |    1 | closing tables                    | select * from session where sky_id in (112197775,0)                                                  |
54 | 10092 | session     | localhost:58989    | session | Query   |    2 | closing tables                    | select * from session where sky_id in (119670638,0)                                                  |
55 | 10093 | session     | localhost:58990    | session | Query   |    0 | Opening tables                    | select * from session where sky_id=122174655                                                         |
56 | 10094 | session     | localhost:58991    | session | Query   |    1 | closing tables                    | select * from session where sky_id=107754958                                                         |
57 | 10095 | session     | localhost:58992    | session | Query   |    1 | Opening tables                    | select * from session where sky_id=124731148                                                         |
58 | 10096 | session     | localhost:58993    | session | Query   |    1 | Opening tables                    | select * from session where sky_id in (102387333,0)                                                  |
59 | 10097 | session     | localhost:58994    | session | Query   |    1 | Opening tables                    | select * from session where sky_id=125736384                                                         |
60 | 10098 | session     | localhost:58995    | session | Query   |    2 | Opening tables                    | select * from session where sky_id in (112651179,0)                                                  |
61 | 10099 | session     | localhost:58996    | session | Query   |    1 | closing tables                    | select * from session where sky_id in (124550937,0)                                                  |
62 | 10100 | session     | localhost:58997    | session | Query   |    1 | Opening tables                    | select * from session where sky_id in (124550775,0)                                                  |
63 | 10101 | session     | localhost:58998    | session | Query   |    1 | closing tables                    | select * from session where sky_id in (110934430,0)                                                  |
64 | 10102 | session     | localhost:58999    | session | Query   |    2 | Opening tables                    | select * from session where sky_id=112118211                                                         |
65 | 10103 | session     | localhost:59000    | session | Query   |    2 | Opening tables                    | select * from session where sky_id in (123846550,0)                                                  |
66 | 10550 | session     | 192.168.3.29:44979 | session | Sleep   |   29 |                                   | NULL                                                                                                 |
67 | 10566 | session     | 192.168.3.53:45132 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
68 | 10567 | session     | 192.168.3.53:45133 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
69 | 10568 | session     | 192.168.3.53:45134 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
70 | 10569 | session     | 192.168.3.53:45135 | session | Query   |    4 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
71 | 10570 | session     | 192.168.3.53:45136 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
72 | 10571 | session     | 192.168.3.53:45137 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
73 | 10572 | session     | 192.168.3.53:45138 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
74 | 10573 | session     | 192.168.3.53:45139 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
75 | 10574 | session     | 192.168.3.53:45140 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
76 | 10575 | session     | 192.168.3.53:45141 | session | Query   |    0 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
77 | 10576 | session     | 192.168.3.53:45142 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
78 | 10577 | session     | 192.168.3.53:45143 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
79 | 10578 | session     | 192.168.3.53:45144 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
80 | 10579 | session     | 192.168.3.53:45145 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
81 | 10580 | session     | 192.168.3.53:45146 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
82 | 10581 | session     | 192.168.3.53:45147 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
83 | 10582 | session     | 192.168.3.53:45148 | session | Query   |    2 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
84 | 10583 | session     | 192.168.3.53:45149 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
85 | 10584 | session     | 192.168.3.53:45151 | session | Query   |    2 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
86 | 10585 | session     | 192.168.3.53:45152 | session | Query   |    2 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
87 | 10586 | session     | 192.168.3.53:45153 | session | Query   |    6 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
88 | 10587 | session     | 192.168.3.53:45154 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
89 | 10588 | session     | 192.168.3.53:45155 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
90 | 10589 | session     | 192.168.3.53:45156 | session | Query   |    5 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
91 | 10590 | session     | 192.168.3.53:45157 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
92 | 10591 | session     | 192.168.3.53:45158 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
93 | 10592 | session     | 192.168.3.53:45159 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
94 | 10593 | session     | 192.168.3.53:45160 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
95 | 10594 | session     | 192.168.3.53:45161 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
96 | 10595 | session     | 192.168.3.53:45162 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
97 | 10596 | session     | 192.168.3.53:45163 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
98 | 10597 | session     | 192.168.3.53:45164 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
99 | 10598 | session     | 192.168.3.53:51053 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
100 | 10599 | session     | 192.168.3.53:51054 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
101 | 10600 | session     | 192.168.3.53:51059 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
102 | 10601 | session     | 192.168.3.53:51060 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
103 | 10602 | session     | 192.168.3.53:51063 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
104 | 10603 | session     | 192.168.3.53:51067 | session | Query   |    0 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
105 | 10604 | session     | 192.168.3.53:51069 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
106 | 10605 | session     | 192.168.3.53:51070 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
107 | 10606 | session     | 192.168.3.53:51073 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
108 | 10607 | session     | 192.168.3.53:51077 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
109 | 10608 | session     | 192.168.3.53:51078 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
110 | 10609 | session     | 192.168.3.53:51081 | session | Query   |    4 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
111 | 10610 | session     | 192.168.3.53:51082 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
112 | 10611 | session     | 192.168.3.53:51083 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
113 | 10612 | session     | 192.168.3.53:51087 | session | Query   |    2 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
114 | 10613 | session     | 192.168.3.53:51088 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
115 | 10614 | session     | 192.168.3.53:51091 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
116 | 10615 | session     | 192.168.3.53:51093 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
117 | 10616 | session     | 192.168.3.53:51095 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
118 | 10617 | session     | 192.168.3.53:51096 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
119 | 10618 | session     | 192.168.3.53:51098 | session | Query   |    3 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
120 | 10619 | session     | 192.168.3.53:51101 | session | Query   |    4 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
121 | 10620 | session     | 192.168.3.53:51102 | session | Query   |    2 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
122 | 10621 | session     | 192.168.3.53:51106 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
123 | 10622 | session     | 192.168.3.53:51109 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
124 | 10623 | session     | 192.168.3.53:51111 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
125 | 10624 | session     | 192.168.3.53:51113 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
126 | 10625 | session     | 192.168.3.53:51116 | session | Query   |    3 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
127 | 10626 | session     | 192.168.3.53:51118 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
128 | 10627 | session     | 192.168.3.53:51119 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
129 | 10628 | session     | 192.168.3.53:51120 | session | Query   |    0 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
130 | 10629 | session     | 192.168.3.53:51121 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
131 | 10630 | session     | 192.168.3.53:51122 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
132 | 10631 | session     | 192.168.3.53:51125 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
133 | 10632 | session     | 192.168.3.53:51126 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
134 | 10633 | session     | 192.168.3.53:51130 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
135 | 10634 | session     | 192.168.3.53:51131 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
136 | 10635 | session     | 192.168.3.53:51132 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
137 | 10636 | session     | 192.168.3.53:51138 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
138 | 10637 | session     | 192.168.3.53:51139 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
139 | 10638 | session     | 192.168.3.53:51140 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
140 | 10639 | session     | 192.168.3.53:51141 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
141 | 10640 | session     | 192.168.3.53:51142 | session | Query   |    4 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
142 | 10641 | session     | 192.168.3.53:51143 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
143 | 10642 | session     | 192.168.3.53:51144 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
144 | 10643 | session     | 192.168.3.53:51146 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
145 | 10644 | session     | 192.168.3.53:51147 | session | Query   |    5 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
146 | 10645 | session     | 192.168.3.53:51151 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
147 | 10646 | session     | 192.168.3.53:51152 | session | Query   |    2 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
148 | 10647 | session     | 192.168.3.53:51157 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
149 | 10648 | session     | 192.168.3.53:51158 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
150 | 10649 | session     | 192.168.3.53:51159 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
151 | 10650 | session     | 192.168.3.53:51161 | session | Query   |    2 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
152 | 10651 | session     | 192.168.3.53:51162 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
153 | 10652 | session     | 192.168.3.53:51172 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
154 | 10653 | session     | 192.168.3.53:51173 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
155 | 10654 | session     | 192.168.3.53:51176 | session | Query   |    2 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
156 | 10655 | session     | 192.168.3.53:51178 | session | Query   |    1 | Opening tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
157 | 10656 | session     | 192.168.3.53:51180 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
158 | 10657 | session     | 192.168.3.53:51184 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
159 | 10658 | session     | 192.168.3.53:51185 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
160 | 10659 | session     | 192.168.3.53:51187 | session | Query   |    4 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
161 | 10660 | session     | 192.168.3.53:51190 | session | Query   |    3 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
162 | 10661 | session     | 192.168.3.53:51191 | session | Query   |    2 | closing tables                    | select sky_id, nick_name, gender, age, portrait_id, province, pos_desc, loc_desc, last_oltime, login |
163 | 10663 | session     | 192.168.3.29:40779 | session | Sleep   |   28 |                                   | NULL                                                                                                 |
164 | 14144 | session     | 192.168.3.29:33168 | session | Sleep   |   28 |                                   | NULL                                                                                                 |
165 | 14147 | session     | 192.168.3.29:33238 | session | Query   |    1 | Opening tables                    | select * from session where sky_id=126899311                                                         |
166 | 14164 | session     | 192.168.3.29:44682 | session | Query   |    1 | Opening tables                    | update session set longitude=11351329,latitude=2230310,loc_desc=”,city=”  where sky_id=126812291   |
167 | 14174 | root        | localhost          | session | Query   |    0 | NULL                              | show processlist                                                                                     |
168 | 14234 | session     | 192.168.3.29:50465 | session | Sleep   |   27 |                                   | NULL                                                                                                 |
169 +——-+————-+——————–+———+———+——+———————————–+——————————————————————————————————+
170 164 rows in set (0.00 sec)

　　居然一堆的进程在等待这两个事件。

　　检查系统参数 

mysql> show variables like ‘table_open_cache’;
+——————+——-+
| Variable_name    | Value |
+——————+——-+
| table_open_cache | 64    |
+——————+——-+
1 row in set (0.00 sec)

　　在看看这个现在用到了多少 

1 mysql> show global status like ‘open_tables’;
2 +—————+——-+
3 | Variable_name | Value |
4 +—————+——-+
5 | Open_tables   | 91    |
6 +—————+——-+
7 1 row in set (0.00 sec)

　　修改下系统的参数 

1 mysql> set global table_open_cache=512;
2 Query OK, 0 rows affected (0.00 sec)

　　问题消失了，可是我却无法确认这个问题的消失，是系统自动恢复了，还是我这个设置生效了，只能继续观察了。
 

原文链接：http://www.oracledba.com.cn/blog/?p=593

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