Yes. SE and the other editions have a migration/upgrade utility, not seeing any mention of that program in the XE license docs. To upgrade to 11gR2 from 10g, the 10g instance must be at patch 10.2.0.2 or higher.is it possible to upgrade
I am not able to find the ojdbc6.jar file for JAVA 1.4 version for our JDBC connection?That's the caveeat: There are no Java 2 (1.4) drivers for Oracle 11g any more. Java 2 fell out of support a long time ago. If you intend to update your target database, I'd also recommend to update to a recent Java release.