IPCCLEAN(1) PostgreSQL Server Applications IPCCLEAN(1)NAMEipcclean - remove shared memory and semaphores from an
aborted PostgreSQL server
SYNOPSISipccleanDESCRIPTIONipcclean 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 (post-
master(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 pro-
gram as it can cause bizarre behavior (i.e., crashes) if
run during multiuser execution. If this command is exe-
cuted 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)
