Kellyn Gorman • 7/18/2025

PostgreSQL for the Oracle DBA, Part 6: Tuples, MVCC, and Two Views

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This technical article explores the core architectural differences in how PostgreSQL and Oracle handle rows and MVCC. It details PostgreSQL's tuple structure, append-only update model requiring VACUUM, and contrasts it with Oracle's in-place updates, undo records, and SCN-based visibility control, aimed at database administrators.

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#database #oracle #concurrency
PostgreSQL for the Oracle DBA, Part 6: Tuples, MVCC, and Two Views

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