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     ipcclean - remove shared memory and semaphores from a failed
     PostgreSQL server


     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  (postmas-
     ter(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 dur-
     ing multiuser execution. If this command is executed while a
     server  is  running,  the shared memory and semaphores allo-
     cated by that server  will  be  deleted,  which  would  have
     rather severe consequences for that server.

     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 assumptions about the output format of  the
     ipcs  utility which may not be true across different operat-
     ing systems.  Therefore, it may not work on your  particular
     OS. It's wise to look at the script before trying it.

Man pages from Solaris 10 Update 8. See docs.sun.com and www.oracle.com for further documentation and Solaris information.