E.2. Postgres Pro Standard 9.6.23.1
Release date: 2021-08-20
E.2.1. Overview
This release is based on PostgreSQL 9.6.23 and Postgres Pro Standard 9.6.22.1. All improvements inherited from PostgreSQL 9.6.23 are listed in PostgreSQL 9.6.23 Release Notes. Other major changes and enhancements are as follows:
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.
Fixed the behavior of
ALTER TABLE IF EXISTScommand in the case when the source table is missing and the pg_pathman extension was loaded. Previously,tableRENAME TOtable1ERRORwas returned, and nowNOTICEis 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
catchupcommand 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.
E.2.2. Migration to Version 9.6.23.1
Depending on your current installation, the upgrade procedure will differ.
To upgrade from a Postgres Pro Standard version based on any previous PostgreSQL major release, make sure you have installed its latest minor version, and then perform a dump/restore using pg_dumpall or use the pg_upgrade utility.
To upgrade from a Postgres Pro Standard version based on the same PostgreSQL major release, a dump/restore is not required.
While functions numeric_eq, numeric_ne, numeric_gt, numeric_ge, numeric_lt, and numeric_le are actually leakproof, they were not marked as such in Postgres Pro Standard 9.6.16.1 or lower, which could lead to incorrect query optimization. In particular, it negatively affected query execution if row-level security policy was in use. Version 9.6.17.1 repairs this issue for new installations by correcting the initial catalog data, but existing installations will still have incorrect markings unless you update pg_proc entries for these functions. You can run pg_upgrade to upgrade your server instance to a version containing the corrected initial data, or manually correct these entries in each database of the installation using the ALTER FUNCTION command. For example:
ALTER FUNCTION pg_catalog.numeric_eq LEAKPROOF
Since pg_probackup delivery model changed in Postgres Pro Standard 9.6.12.1, when upgrading from a lower version on ALT Linux and Debian-based systems, run apt dist-upgrade (or apt-get dist-upgrade) to ensure that all new dependencies are handled correctly. On Windows, you have to run a separate pg_probackup installer to complete the upgrade.
When upgrading from versions 9.6.8.2 or lower, you must call the REINDEX command for indexes that used mchar or mvarchar types.
If you are upgrading from Postgres Pro Standard 9.6.7.1 or lower, you must also use the pgpro_upgrade script provided in this distribution. This script updates metadata information to handle catalog number format change introduced after Postgres Pro Standard 9.6.4.1, as well as rename the pgpro_build function to pgpro_source_id. The pgpro_upgrade script is usually run automatically. However, if you have created your database in a non-default location, you must run the pgpro_upgrade script manually.
Note
If you run pgpro_upgrade manually, you must stop postgres service. The script must be run on behalf of the user owning the database (typically postgres). Running pgpro_upgrade as root will result in an error. For details, see pgpro_upgrade.
Note
On RPM-based Linux distributions, if you are upgrading from version 9.6.2.1 or lower, make sure to move the data directory from pgsql to the pgpro directory before running the pgpro_upgrade script.
To migrate from vanilla PostgreSQL 9.6.x, make sure you have installed its latest available minor version and then perform a dump/restore using pg_dumpall.