I have stateless sessiobean and i deployed on jboss 4.0.3Sp1. I m able to run my application successfully but when i check it that my sessionbean dose not support transaction management. For Ex. when i insert record from web page, and after inserting record system fire nullPointer Exception, i thougt that record is not inserted in database because as per EJB specification ( IF any error comes then transaction must be rollback). but when i show list of the records, i see that my last record is in table. so these is problem, jboss can not execute rollback transcation when Jboss gives error. So any one can help me for that . is there any configuration file for that or jboss is not supported.