ipcclean

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  server  is	running,  the
       shared memory and semaphores allocated by that server will be deleted,
       which would have rather severe consequences for that server.

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			  2008-01-03			  IPCCLEAN(1)