Umair Shahid continues a series on migrating from Oracle to PostgreSQL:
Transitioning from Oracle to PostgreSQL can be a transformative experience for database administrators because of the subtle differences between the two technologies. Understanding how the two handle concurrency differently is critical to managing highly concurrent workloads.
Concurrency control is essential for maintaining data consistency when multiple users access the database simultaneously. Oracle and PostgreSQL take different approaches to concurrency control: Oracle primarily relies on locking and consistent snapshots, while PostgreSQL utilizes a Multi-Version Concurrency Control (MVCC) system.
This article provides an in-depth look at concurrency control in PostgreSQL from an Oracle perspective.
Read on for that comparison.