topic Rogue Processes in Operating System - HP-UX

Rogue Processes

Neale Machin — Fri, 22 Sep 2000 08:16:44 GMT

We are currently having a substantial amount of rogue processes on a 10.20 K370 running Oracle 8.0.5 . I am concerned that these are being caused by the application ( which is client server ). Has anyone come across such a problem before and if so what was your solution. Our application suppliers response is Unix does that sometimes.

Re: Rogue Processes

Andy Monks — Fri, 22 Sep 2000 08:25:08 GMT

You haven't said what the processes are. Most rogue processes are caused by bad applications. When a child process dies, the parent gets sent a signal. The child can't die until the parent acknowlegdes the death. If it doesn't ack it, the child becomes a zombie. Most zombies don't cause problems and will be reaped at reboot time.

If it's an application causing this, tell them to fix there code :-)

Re: Rogue Processes

Neale Machin — Fri, 22 Sep 2000 08:40:38 GMT

Thanks for the quick reply . The processes are various oracle apps created by the third party software supplier.

we dont get zombies they just go rogue and eat resources without actually showing in top that they are using resources. On killing them off all appears to be ok and we have created oracle dumps which have also been sent to the supplier.

Re: Rogue Processes

Simon R Wootton — Fri, 22 Sep 2000 10:46:02 GMT

Hi

I have an N-class running HP-UX 11.00 We also get the rogue process syndrome, but rarely since we migrated to the current platform. Although last resort, rebooting clears any zombie processes in the can't die of their own accord. It sounds like processes are failing to complete and leaving the child process behind ?

Re: Rogue Processes

Simon R Wootton — Fri, 22 Sep 2000 10:46:37 GMT

Re: Rogue Processes

Simon R Wootton — Fri, 22 Sep 2000 10:47:25 GMT