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E.105. Release 9.1.18

Release date: 2015-06-12

This release contains a small number of fixes from 9.1.17. For information about new features in the 9.1 major release, see Section E.123.

E.105.1. Migration to Version 9.1.18

A dump/restore is not required for those running 9.1.X.

However, if you are upgrading from a version earlier than 9.1.16, see Section E.107.

E.105.2. Changes

  • Fix rare failure to invalidate relation cache init file (Tom Lane)

    With just the wrong timing of concurrent activity, a VACUUM FULL on a system catalog might fail to update the init file that's used to avoid cache-loading work for new sessions. This would result in later sessions being unable to access that catalog at all. This is a very ancient bug, but it's so hard to trigger that no reproducible case had been seen until recently.

  • Avoid deadlock between incoming sessions and CREATE/DROP DATABASE (Tom Lane)

    A new session starting in a database that is the target of a DROP DATABASE command, or is the template for a CREATE DATABASE command, could cause the command to wait for five seconds and then fail, even if the new session would have exited before that.

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