ipcclean(1) PostgreSQL Server Applications ipcclean(1)
NAME
ipcclean - remove shared memory and semaphores from an aborted Post-
greSQL 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 execu-
tion. 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.
Application 2002-11-22 ipcclean(1)
Mac OS X 10.9.1 - Generated Sun Jan 5 13:57:13 CST 2014