如何在我的多线程EJB2 JBoss应用程序中监视数据库事务？

Question

I have encountered a reproducible Oracle deadlock within my application. An initial investigation of the code has not thrown up any obvious cause, so I would like to re-create the situation while logging the SQL being run and most importantly, the transactions they are occurring within.

I started adding my own debug statements, but this seems like I am re-inventing the wheel and has already proved error prone (I initially missed that one of my EJB methods was defined as "RequiresNew")

Are there tools which will do this? I've looked at:

• log4jdbc, but it is not clear from the docs that I've seen that it will log the separate transactions, plus it doesn't support datasources, so I'd need work round that.

• jdbcslog - also not clear if it would log transactions

Or am I missing some more obvious way to do this?

Answer 1

Solved similar case a few times. It's very difficult (I call it lucky) to find solution in complicated app just from your session logging. (Oracle kills one of these sessions. One is killed and the other one lives on happily)

Best solution is to ask your DBA (or if you have access to your oracle instalation, you can google and then get them yourself, it's not sou complicated) for trace file(this file is mentioned in exception of killed session, so search your alert log), there will be deadlock graph. (just fulltext trace file for DEADLOCK)

Just look here for exact information how to look into your trace file. LINK