View Source: ipcclean(1) - Waikato Linux Users Group

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IPCCLEAN
!!!IPCCLEAN
NAME
SYNOPSIS
DESCRIPTION
NOTES
----
!!NAME


ipcclean - remove shared memory and semaphores from an aborted PostgreSQL server
!!SYNOPSIS


__ipcclean__
!!DESCRIPTION


__ipcclean__ removes all shared memory segments and
semaphore sets owned by the current user. It is intended to
be used for cleaning up after a crashed PostgreSQL server
(postmaster(1)). Note that immediately restarting the
server will also clean up shared memory and semaphores, so
this command is of little real utility.


Only the database administrator should execute this program
as it can cause bizarre behavior (i.e., crashes) if run
during multiuser execution. If this command is executed
while a __postmaster__ is running, the shared memory and
semaphores allocated by the __postmaster__ will be
deleted. This will result in a general failure of the
backend servers started by that
__postmaster__.
!!NOTES


This script is a hack, but in the many years since it was
written, no one has come up with an equally effective and
portable solution. Since the __postmaster__ can now clean
up by itself, it is unlikely that __ipcclean__ will be
improved upon in the future.


The script makes assumption about the format of output of
the __ipcs__ utility which may not be true across
different operating systems. Therefore, it may not work on
your particular OS.
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Last edited on Tuesday, June 4, 2002 12:22:12 am by "perry"

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