Tim Nelson <timnels@xxxxxxxxx> writes: > New to Postgres and I have never seen this condition. We are getting test > applications hanging on SELECT statements with a RowExclusiveLock. How can > a SELECT cause a RowExclusiveLock? > relname | pid | mode | granted > --------------------------+-------+------------------+--------- > sales_transaction_detail | 392 | RowExclusiveLock | t > sales_transaction_detail | 19077 | RowExclusiveLock | t > sales_transaction_header | 32661 | RowExclusiveLock | t > sales_transaction_header | 392 | RowExclusiveLock | t > sales_transaction_header | 19077 | RowExclusiveLock | t Hm, all those entries are showing granted = t, implying that they are not blocked. I think you are mis-querying pg_locks or mis-interpreting the results. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general