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IPCCLEAN(1)
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.

Index for Section 1

Alphabetical listing for I

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