I had a code using a session bean getting a connection to an oracle db in order to execute an db procedure, it was deployed on OAS and it was working just fine with concurrent calls.
We just deployed the same code to WLS connecting to the same DB, but whenever we make concurrent calls the performance degraded exponentially!! Again it is the same code!!
Could it be the way WLS manage its connection pool? it is an XA connection. is it some configuration between Oracle DB and WLS?!!
Any help is appreciated,