"Andrus" <kobruleht2@xxxxxx> writes: > 2007-06-13 03:49:10 ERROR: deadlock detected > 2007-06-13 03:49:10 DETAIL: Process 3280 waits for AccessExclusiveLock on > relation 233893 of database 233756; blocked by process 2508. > Process 2508 waits for ShareUpdateExclusiveLock on relation 233988 of > database 233756; blocked by process 3280. > 2007-06-13 03:49:10 STATEMENT: ALTER TABLE desktop ADD FOREIGN KEY > (alamklass) REFERENCES andmetp ON UPDATE CASCADE DEFERRABLE > and script terminates after 5.5 hours running yesterday night. This might be a good reason not to run the script as a single long transaction --- it's probably accumulating locks on a lot of different tables. Which would be fine if it was the only thing going on, but evidently it isn't. regards, tom lane