<xsl:param name="driver" select="'oracle.jdbc.driver.OracleDriver'"/>
<xsl:param name="database" select="'jdbc:oracle:thin:@127.0.0.1:1521:orcl'"/>
<xsl:param name="user">user1</xsl:param>
<xsl:param name="password">mypw</xsl:param>

<xsl:variable name="connection" as="java:java.sql.Connection"
    xmlns:java="http://saxon.sf.net/java-type">
        <sql:connect driver="{$driver}" database="{$database}"
            user="{$user}" password="{$password}"
            xsl:extension-element-prefixes="sql"/>
</xsl:variable>