"Ed L." <pgsql@xxxxxxxxxxxxx> writes: > We're seeing some unexpected behavior in one particular 64-bit > Pgsql 8.1.2 running on HP-UX 11.23 and Itanium 2, built > with --enable-thread-safety. We think we are seeing concurrent > select-for-updates of the same rows by multiple concurrent > backends, contrary to our understanding of select-for-update > semantics. You really ought to be using something newer than 8.1.2. However I don't see anything directly related in the release notes. You do have a transaction block established around this whole process? Row locks only last as long as the current transaction ... regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to majordomo@xxxxxxxxxxxxxx so that your message can get through to the mailing list cleanly