Vacuum Archives - 2ndQuadrant

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PostgreSQL VACUUM and ANALYZE Best Practice Tips

VACUUM and ANALYZE are the two most important PostgreSQL database maintenance operations. A vacuum is used for recovering space occupied by “dead tuples” in a table. A dead tuple is created when a record is either deleted or updated (a delete followed by an insert). PostgreSQL doesn’t physically remove the old row from the table […]

PG Phriday: 10 Things Postgres Could Improve – Part 3

September 11, 2020/0 Comments/in Shaun's PlanetPostgreSQL /by Shaun Thomas

At the core of the “10 Things I Hate About PostgreSQL” blog post, sits one particular observation that seems like a simple annoyance at first glance. MVCC is presented merely as item 4 in the list, but like XIDs, it serves as a star upon which an entire constellation of related stellar objects converge. While […]

Parallelism comes to VACUUM

September 2, 2020/1 Comment/in 2ndQuadrant, Masahiko's Planet PostgreSQL, PostgreSQL, PostgreSQL 13 /by Masahiko Sawada

Vacuum is one of the most important features for reclaiming deleted tuples in tables and indexes. Without vacuum, tables and indexes would continue to grow in size without bounds. This blog post describes the PARALLEL option for VACUUM command, which is newly introduced to PostgreSQL13. Vacuum Processing Phases Before discussing the new option in depth […]

PG Phriday: Postgres 12 Revs up Vacuum

September 6, 2019/2 Comments/in Shaun's PlanetPostgreSQL /by Shaun Thomas

Any long-time user of Postgres is likely familiar with VACUUM, the process that ensures old data tuples are identified and reused to prevent unchecked database bloat. This critical element of maintenance has slowly, but surely, undergone incremental enhancements with each subsequent release. Postgres 12 is no different in this regard. In fact, there are two […]

Autovacuum Tuning Basics

March 2, 2017/12 Comments/in 2ndQuadrant, PostgreSQL, Tomas' PlanetPostgreSQL /by Tomas Vondra

A few weeks ago I covered the basics of tuning checkpoints, and in that post I also mentioned that the second common source of performance issues is autovacuum (based on what we see on the mailing list and at our customers under support). So let me follow-up on that with this post about the basics […]

Committed to the PostgreSQL Community, 2ndQuadrant Contributes to 9.6

September 29, 2016/3 Comments/in 2ndQuadrant, Featured, Umair's PlanetPostgreSQL /by Umair Shahid

The latest version of PostgreSQL 9.6 is planned to be released later today, bringing with it some much anticipated features and updates. As the most advanced open source database, PostgreSQL strives to release a major version roughly once every year. With an active and collaborative community, this PostgreSQL release boasts impressive features and updates thanks […]

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Posts

PostgreSQL VACUUM and ANALYZE Best Practice Tips

PG Phriday: 10 Things Postgres Could Improve – Part 3

Parallelism comes to VACUUM

PG Phriday: Postgres 12 Revs up Vacuum

Autovacuum Tuning Basics

Committed to the PostgreSQL Community, 2ndQuadrant Contributes to 9.6

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