Hi. I have a query that does some batch deletes and inserts into a table. It runs for 2-3 minutes when the application that uses the database is in production with users doing stuff. Recently I have noticed that this query is a frequent victim of deadlocks. Is there any way to set a deadlock priority of this transaction or some other setting so that it is never chosen as a deadlock victim if only one instance of the transaction is running at the same time? All other accesses to the table may be killed because of the deadlock but not this query. ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq