IBM DB2 的数据复制、迁移方法
附录1:生成export脚本代码示例:
/**//**
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* 创建导出脚本
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* @param conn
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* @param creator 表创建者
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* @param filePath
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*/
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public void createExportFile(Connection conn,String creator,String filePath) throws Exception {
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DBBase dbBase = new DBBase(conn);
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String selectTableSql = "select name from sysibm.systables where creator = '" + creator + "' and type='T'";
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try {
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dbBase.executeQuery(selectTableSql);
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} catch (Exception ex) {
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throw ex;
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} finally {
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dbBase.close();
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}
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DBResult result = dbBase.getSelectDBResult();
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List list = new ArrayList();
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while (result.next()) {
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String table = result.getString(1);
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list.add(table);
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}
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StringBuffer sb = new StringBuffer();
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String enterFlag = "\r\n";
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for (int i = 0; i < list.size();i++) {
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String tableName = (String)list.get(i);
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sb.append("db2 \"export to aa" + String.valueOf(i+1)+ ".ixf of ixf select * from " + tableName + "\"");
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sb.append(enterFlag);
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}
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String str = sb.toString();
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FileUtility.saveStringToFile(filePath, str, false);
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}
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附录2:生成import脚本代码示例:
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/**//**
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* 创建装载脚本
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* @param conn
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* @param creator 表创建者
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* @param filePath
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*/
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public void createLoadFile(Connection conn,String creator,String filePath) throws Exception {
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DBBase dbBase = new DBBase(conn);
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String selectTableSql = "select name from sysibm.systables where creator = '" + creator + "' and type='T'";
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try {
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dbBase.executeQuery(selectTableSql);
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} catch (Exception ex) {
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throw ex;
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} finally {
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dbBase.close();
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}
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DBResult result = dbBase.getSelectDBResult();
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List list = new ArrayList();
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while (result.next()) {
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String table = result.getString(1);
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list.add(table);
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}
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StringBuffer sb = new StringBuffer();
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String enterFlag = "\r\n";
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for (int i = 0; i < list.size();i++) {
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String tableName = (String)list.get(i);
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sb.append("db2 \"load from aa" + String.valueOf(i+1)+ ".ixf of ixf into " + tableName + " COPY NO without prompting \"");
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sb.append(enterFlag);
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}
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String str = sb.toString();
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FileUtility.saveStringToFile(filePath, str, false);
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}
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附录3:export脚本示例
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db2 connect to testdb user test password test
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db2 "export to aa1.ixf of ixf select * from table1"
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db2 "export to aa2.ixf of ixf select * from table2"
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db2 connect reset
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附录4:import脚本示例
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db2 connect to testdb user test password test
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db2 "load from aa1.ixf of ixf replace into table1 COPY NO without prompting "
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db2 "load from aa2.ixf of ixf replace into table2 COPY NO without prompting "
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db2 connect reset
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