Tag: wal

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Why does my pg_wal keep growing?

by Laurenz Albe | 08.2023
  "Why does my pg_wal keep growing?" That's a question I keep hearing again and again. It is an urgent […]

Transaction ID wraparound: a walk on the wild side

by Laurenz Albe | 01.2023
  Most people are aware of transaction ID wraparound. The concept has been well explained in Hans' article, so I […]

Reduce WAL by increasing checkpoint distance

by Hans-Jürgen Schönig | 03.2020
If you are running PostgreSQL in production you might have already noticed that adjusting checkpoints can be a very beneficial […]

Never lose a PostgreSQL transaction with pg_receivewal

by Laurenz Albe | 10.2019
    “Durability”, the D of ACID, demands that a committed database transaction remains committed, no matter what. For normal […]

Checkpoint distance and amount of WAL

by Hans-Jürgen Schönig | 01.2017
UPDATED September 2023: Most people who use PostgreSQL database systems are aware of the fact that the database engine must […]

wal_level: What is the difference?

by Hans-Jürgen Schönig | 03.2014
To use PostgreSQL replication it is necessary to change the wal_level from “minimal” to “hot_standby”. But, which impact does this […]
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