Hi,

I have an application 'B' that uses hibernate (db postgres) that is a module of another application say 'A' that uses jdbc-connectons defined in tomcat's server.xml (This application 'A" uses JDO's and implements DAO's and I have chosen postgres for this application). My Application 'A' works fine and I am able to retrieve and persist data as LONG AS I HAVE NOT INTEGRATED HIBERNATE WITH IT!. When I deploy my module 'B' module B works fine but i am cannot create/update or save anything henceforth for my Application 'A' I can only retrieve information. If I undeploy my hibernate module 'B' I have not problems with Application 'A' . I have created two different databases 'A' and 'B' on postgres but A uses JDBC connection and for 'B' I have specified the appropriate settings in hibernate.properties file. Can anybody help me out?

Regards,
Conrad.

Just to add a bit my module 'A' uses javax.sql.datasource as the datasource for the JDBC
connections. However for "B" I use hibernate API for sessions after setting the apropriate hibernate config parameters and database settings for postgres.

just found out that the jta.jar was causing the problem. I was gettin a Class Cast exception when I deployed my module 'B' (That runs on hibernate) in my deploy folder where Application 'A' resides. If I use java:comp/UserTransaction (wjic my main Application uses) everything works fine!.

I am assuming that tomcat 3.0 uses an older version of jta.jar. When I copied the jar files that comes with hibernate (including the jta.jar--I think this is a new version) into the deploy folder I assume that the class cast exception was being caused because of the version problem . When I deleted the jta.jar (the newer version) that was present in the lib folder file everything worked fine because it used the older tomcat's version.

You are using Tomcat 3.0?

Sorry!

i am using tomcat 4.0.3 version.