RE: Unkillable Background process "SHUTDOWN ABORT LEAVES UNKILLAB

Hi Stephen,

Sun Clustering basically quite simple (I think) :) an Oracle user dedicated to this software use to monitor (do query for certain system tables) the existence of the db if anything wrong than this so call fault monitoring will do shutdown abort and release the mount points for second node to do startup pfile=....

the problem is shutdown abort successful but the mounted points cannot be unmount because of those UNKILLED background processes.

I think sun clustering shuold add this
if cannot release mount point then do "STOP A" follow by power off, right ?

Sinardy

-----Original Message-----
Sent: 01 November 2002 23:03
To: Multiple recipients of list ORACLE-L UNKILLAB
> -----Original Message-----
>
> when I try to "sync" the session hung (init will sync
> automatically therefore it hung too)
> I have to POWER OFF and POWER ON my SUN BOX to release the mount point
> My sun clustering fail to fail over because of this
>
> there is jargon in unix call zombie process (what is this ?)
> What is tampered process, and when it happen ?
>

A zombie process is a process that was started by a parent process in such a way that it is expected that the child process will exit and the parent will acknowledge the exit; but the parent never did. You used to see this all the time on a Unix box in the past. Now days, the "init" process usually becomes the foster parent so you don't have zombies piling up as time goes on. There was never anything terribly wrong with zombies (as long as it wasn't some ridiculous amount) since the only resource they tied up (at least in theory) was a process ID number; and it made for a messy, disconcerting ps output.

I know absolutely nothing about Sun clustering; but I am wondering if you are having trouble with network file system reads and writes. NFS problems can cause hanging.

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Author: Stephen Lee
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Author: Sinardy Xing
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