To all:
Before I posted a topic:
http://www.jboss.org/index.html?module=bb&op=viewtopic&t=53288
where I was having a problem where transactions did not update the database instantaneously.
I solved the problem by using OracleDS (the usual Oracle driver) instead of the recommended XAOracleDS (the XA Oracle driver) mentioned in the document "Getting Started with JBoss". Once I started using the usual Oracle driver the database did get updated instantaneously.
I tested insert and rollback and both worked.
If I use OracleDS instead of XAOracleDS will it cause any performance problems? Right now I'm in a test environment so I am about the only person using it. I don't know if it will still work well in a production environment where there are hundreds of people using it.
If anyone can point me to any other documents, web-sites that explain the differences I would really appreciate it.

Thanks in advance for all your help.