Why are orphaned XMLForm processes running in my server instance

LCES Update 1 SP2 -Forms/Output/Reader Extensions
JBOSS EAP 4.3 CP07
RHEL5
Oracle
I'm experiencing multiple XMLForm processes running in my server instance. Stopping the jvm does not remove these orphaned XMLForm processes. Our pool size is set to 4, but we have had as many as 8 running on my development server until we killed the processes. We are not load testing. The hung processes have time stamps prior to the most recent jvm restart and they are utilizing CPU resources (they are not idle). Eventually if the processes are not killed the jvm becomes unstable and will no longer successfully respond.
Normal behavior is for the process to go idle once the transaction is successfully sent through Forms or Output.
The only indication of problems in the server.log are SQL exceptions, but these only start to apper once the server becomes over utilized. I see no evidence of XMLForm erroring in the logs.
SQL exception attached.
The IDP_DS is configured correctly.
Has anyone experienced this behavior and resolved the issue?

Thanks Jayan.
There were 4 XMLForm's running prior to shutting down the server just now.
- I stopped the JVM, the XMLForm processes were left hung.
- We killed the XMLForm processes, then restarted the entire server.
- Started the jvm, and ran one tranaction through Output.
-XMLForm started
-Stopped the jvm, and the process ended properly.
I will monitor the activity the rest of the day. I restarted this jvm yesterday and killed all the orphaned processes prior to starting up the jvm. I did NOT restart the server though. So I will assess if the server restart is the fix for this. I have one other environment with the same exact behavior occurring.

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