R12.1.3 AIX OPP JVM issue

Hi ALL,

We have recently upgraded java on AIX  to SR16. After that we are facing a very strange problem with OPP processes.

We have started all the concurrent managers  on the admin box using standard oracle scripts and when did ps -ef | grep OPP, i can see all the process.

But after sometime OPP process are not working and they are shown as below:

applmgr 6197468 1725118   0 05:47:28	-  3:35 [java]
applmgr 6467786 1725118   0 03:39:42	-  6:56 [java]
applmgr 7258232 1725118   0 03:11:33	-  4:54 [java]
applmgr 7676066 1725118   0 03:37:41	-  4:22 [java]
applmgr 8089816 1725118   0 03:35:41	- 23:03 [java]
applmgr 4202976 1725118   0 03:19:35	- 44:31 [java]
applmgr 5030224 1725118   0 05:47:28	-  9:35 [java]
applmgr 6123920 1725118   0 03:33:40	- 10:09 [java]
applmgr 7160110 1725118   0 03:31:39	- 36:02 [java]
applmgr 7475550 1725118   0 05:47:28	-  0:30 [java]
applmgr 3429028 1725118   0 03:29:38	- 13:03 [java]

And also they are not doing anything, all the OPP request were not getting processed.And once we kill those pid, they are restarted back to normal and stay healthy for some time