Hello,

under special situations I have to kill a process on a HP-UX 11.11 server
(PA-RISC, all patches installed). In some situations, the process will not
die. Even "kill -9" doesn't work. Is this behavior correct? I always
thought that a SIGKILL will work under any conditions.

BTW: The process is a Sybase Adaptive Server Enterprise 12.5.0 on a two
processor A-Class 500 server with two database engines. I want to kill
both dataserver processes, but none of them is killable. So I have to
reboot the machine which takes about 5 minutes downtime :-(

Regards,
Elmar

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Elmar Knipp <Elmar.Knipp (AT) ihatespamknipp (DOT) de> wrote:
One can not really kill any process. One can only ask (all but 9) or
tell (9) a process to commit suicide. This is a small but important
distinction. In order to commit suicide, a process has to run. When, for
example, a process is stuck in I/O suspension, it does not run and hence
it can not commit suicide. You can also not kill a zombie/defunct
process, but sometimes you can make it go away (see zombie in
glossary(9)).

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