When encountering the error 40001: Serialization failure in a Postgres DB, the recommended immediate actions are:
SELECT * FROM pg_stat_activity WHERE state = 'active' AND query LIKE '%LOCK%' to find any current locking queries that might be causing serialization failures.SELECT pid, now() - pg_stat_activity.query_start AS duration, query, state FROM pg_stat_activity WHERE (now() - pg_stat_activity.query_start) > interval '5 minutes' ORDER BY duration DESC; This helps identify long-running queries that could be contributing to serialization issues.SELECT relation::regclass, * FROM pg_locks WHERE NOT GRANTED; to identify any locks that are waiting to be granted. This can highlight contention points.SERIALIZABLE isolation. For example, you might switch certain transactions to READ COMMITTED by executing SET TRANSACTION ISOLATION LEVEL READ COMMITTED; in the transaction's session, if this meets your application's consistency requirements.Taking these actions should help identify and potentially resolve the cause of the serialization failure error 40001 in a Postgres DB.
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