Web Reference: Feb 26, 2026 · When acquiring locks automatically for commands that reference tables, PostgreSQL always uses the least restrictive lock mode possible. LOCK TABLE provides for cases when you might need more restrictive locking. Jul 23, 2025 · A lock in PostgreSQL is a mechanism to control access to database objects such as tables, rows, or entire database files. It prevents conflicts by ensuring each transaction can safely modify or access data without interference. Nov 22, 2024 · Understand PostgreSQL locks and their types—table, row, page, and advisory locks. Learn about deadlocks and how to manage conflicts effectively.
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