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PostgreSQL 10 Administration Cookbook - Fourth Edition
book

PostgreSQL 10 Administration Cookbook - Fourth Edition

by Simon Riggs, Gianni Ciolli
May 2018
Intermediate to advanced content levelIntermediate to advanced
576 pages
30h 25m
English
Packt Publishing
Content preview from PostgreSQL 10 Administration Cookbook - Fourth Edition

How it works…

PostgreSQL is designed to require very minimal information to perform a recovery. We'll try hard to wrap all the details up for you:

  • Logical recovery: Recreates database objects by executing SQL statements. If performance is an issue, look at the Improving performance of backup/recovery recipe.
  • Physical recovery: Reapplies data changes at the block level, and so tends to be much faster than logical recovery. It requires both a base backup and a set of archived WAL files.

There is a file named backup_label in the data directory of the base backup. If you want to know the start and stop WAL locations of the base backup, look for a .backup file in the archive.

Recovery then starts to apply changes from the starting WAL location ...

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Publisher Resources

ISBN: 9781788474924Supplemental Content