Idle Oracle Process has removed automatically in AIX5.2

Hello,

I am creating oracle connection from one aix5.2 machine to another aix5.2 database machine. Oracle connection i am reusing it always. If there is now work for java thread to process, oracle instance will be idle and will be active once java thread processes.

We have installed OS Technical patch(5200-09) recently in both machines. After this patch, Oracle connection is getting removed after sometime in database AIX machine. So, Java application is getting ORA-03113 error.

There is no timeout parameters for oracle. It was working fine before installing new OS patch.

IS there any kernal parameter removing oracle process after some hours of idle time????

Hi,
I am also facing same problem.
Both client which is connecting to oracle db and oracle db are in same server AIX 5.3.
There is no timeout parameter for oracle and there is no trace file generated for this error.

What could be the problem.

Regards,
Prashant Prabhu.