topic Re: process in RWAST state in Operating System - OpenVMS

process in RWAST state

nos. — Mon, 16 Jun 2003 02:48:51 GMT

How can I stop or terminate process which its process is RWAST state? I tried to stop it but it still be alive.

Thanks.

Re: process in RWAST state

Mac Lilley — Mon, 16 Jun 2003 09:32:19 GMT

Hello
If you have DECamds or Availability Manager then you may be able to identify and fix the problem. If not you will have to reboot to get rid of the process.

Re: process in RWAST state

Amit Levin — Mon, 16 Jun 2003 09:48:33 GMT

Hi, RWAST state indicates that the process is waiting for an AST related event.
this may happen for the following reasons:
1. astlm hab been reached.
2. diolm has been exhausted.
3. biolm has been exhausted.
4. process is waiting for an outstanding io to compleate (if this is a backup process, try inserting a backup media into the tape...)
5. process is waiting for a sub process to delete (usually, the child is also in RWAST)

I hope this helps.

Re: process in RWAST state

Martin P.J. Zinser — Mon, 16 Jun 2003 13:17:13 GMT

Just as a sidenote, if the process does not
lock a resource like e.g. a tape drive you can
quite easily "live" with it. It does not
use CPU waiting for the AST and will just go
away with the next "regular" reboot there is no
need to schedule a reboot just to get rid of it.

Re: process in RWAST state

Martin Johnson — Mon, 16 Jun 2003 14:12:05 GMT

Use "ANALYZE/SYSTEM" to look at the process locks to determine if an immediate reboot is necessary. Exclusive locks can cause problems.

HTH
Marty

Re: process in RWAST state

Amit Levin — Wed, 18 Jun 2003 06:36:56 GMT

an interesting article in the subject:
http://www.pottsoft.com/home/vms/rwast.html