One of the servers I use (RHEL AS 4; Linux 2.6.9-34.ELsmp x86_64) appears to be in the same state after a reboot as the server in the "Restart after poweroutage" thread from a few months ago: http://archives.postgresql.org/pgsql-general/2007-03/msg00738.php As in the thread, "ipcs -a" shows no postgres-owned shared memory segments and strace shows shmctl() failing with EIDRM. http://archives.postgresql.org/pgsql-general/2007-03/msg00743.php I have only limited access to the box and I haven't found out why it was rebooted. I don't think it was a scheduled reboot so it might have been due to a power outage. Has anybody figured out if this is a Linux kernel bug? I might have until Monday morning if anybody can suggest something to look at; after that the admins will probably reboot and/or remove postmaster.pid to get the database running again. Thanks. -- Michael Fuhr