"surabhi.ahuja" <surabhi.ahuja@xxxxxxxxxxx> writes: > <2006-04-19 01:13:25 IST%startup>FATAL: semctl(7438339, 4, SETVAL, 0) > failed: Invalid argument Kinda looks like something deleted your semaphores --- does "ipcs -s" show anything? Stopping and restarting the postmaster should fix it, if so, but you'll want to find out who ipcrm'd the semaphores and rap their knuckles. regards, tom lane