Postgres Pro Standard 13.4.1: release notes

Overview

This release is based on PostgreSQL 13.4 and Postgres Pro Standard 13.3.1. All improvements inherited from PostgreSQL 13.4 are listed in PostgreSQL 13.4 Release Notes. Other major changes and enhancements are as follows:

  • Added support for Debian 11.

  • Upgraded mamonsu to version 3.0, which is incompatible with the previous one. Read mamonsu Compatibility Considerations to learn what you need to do to continue using the application.

  • Added support for Red OS Murom 7.3.

  • Added support for Astra Linux Smolensk 1.7.

  • Fixed the behavior of ALTER TABLE IF EXISTS table RENAME TO table1 command in the case when the source table is missing and the pg_pathman extension was loaded. Previously, ERROR was returned, and now NOTICE is generated, which is how Postgres Pro behaves with no pg_pathman extension loaded.

  • Upgraded pg_probackup to version 2.5.1, which added a new catchup command to copy a Postgres Pro instance directly, without using the backup catalog. This allows you to add a new standby server in a parallel mode or to have a fallen-behind standby server “catch up” with master.

  • Fixed a bug in the query optimizer, which overestimated the cost of index scan using a unique index. This behavior was observed when between index scans using a unique index and using a non-unique one, the non-unique index was chosen, which resulted in excessive disk accesses and a considerable overall slowdown.

Migration to Version 13.4.1

If you are upgrading from Postgres Pro Standard based on the same PostgreSQL major version, it is enough to install the new version into your current installation directory.

When upgrading from Postgres Pro versions 13.2.1 or lower, rebuild indexes containing at least one included column of type for which the collation was defined in the table.

If you are upgrading from Postgres Pro versions 13.2.2 or lower and take PTRACK backups using pg_probackup, retake a full backup after upgrade.

To migrate from PostgreSQL or a Postgres Pro Standard release based on a previous PostgreSQL major version, see the instructions in Postgres Pro Standard 13.1.1 Release Notes.