E.18. Postgres Pro Enterprise 13.3.1
Release Date: 2021-06-11
E.18.1. Overview
This release is based on PostgreSQL 13.3 and Postgres Pro Enterprise 13.2.2. All changes inherited from PostgreSQL 13.3 are listed in PostgreSQL 13.3 Release Notes. As compared with Postgres Pro Enterprise 13.2.2, this version also provides the following changes:
Fixed a bug in the rum extension which caused phrase search to return less results than expected when the
rum_tsvector_addon_opsorrum_tsvector_hash_addon_opsoperator class was used.Optimized writing of empty pages to
*.cfmfiles when upgrading a cluster with compressed tablespaces using pg_upgrade.Fixed an issue that could lead to a server crash due to dangling pointers to the statistics data when using autonomous transactions.
Upgraded PTRACK to use a different algorithm for tracking changed pages. This greatly reduces the number of false positives among the changed pages tracked in the PTRACK map and hence the size of PTRACK backups.
Optimized calculating the amount of memory used by prepared statements. Now plan_cache_lru_memsize takes into account only the generated plan itself. Previously, it also took into account memory that could not be freed anyway so the search for evictable plans became inefficient and resulted in high CPU usage.
Implemented restoration of corrupted WAL data from in-memory WAL buffers. This is controlled by the wal_sender_check_crc parameter.
Fixed a bug that caused queries to fail with an error “geqo failed to make a valid plan” after updating statistics with
VACUUM ANALYZEwhenenable_compound_index_statswas on.Ended support for Ubuntu 16.04.
Fixed an issue of installing Postgres Pro on Alt Linux 8.2 SP. For this OS, Postgres Pro now provides a separate package repository, which is different from the repositories of earlier Alt Linux SP versions.
Improved the planner's algorithm of self-join selectivity calculation, which ensures more accurate estimates of the number of rows after joins.
Upgraded mamonsu to version 2.7.1.
On Windows systems, fixed an issue with updating temporary files for statistics if they are currently in use.
E.18.2. Migration to Version 13.3.1
If you are upgrading from a Postgres Pro Enterprise release based on the same PostgreSQL major version, it is enough to install the new version into your current installation directory.
If you are upgrading from Postgres Pro Enterprise versions 13.2.2 or lower and take PTRACK backups using pg_probackup, retake a full backup after upgrade.
If you have an installation of Postgres Pro Enterprise 13.2.1 that contains compressed tablespaces created without explicitly specifying the pglz algorithm, perform an upgrade as follows. Before upgrading, make a complete dump using pg_dumpall. Upgrade Postgres Pro Enterprise, re-create your database cluster, and restore the dump. Then you can create compressed tablespaces in the same way as before.
If you have already upgraded your installation with CFS tablespaces from Postgres Pro Enterprise 13.2.1, and you cannot access the compressed data, call the support team.
To migrate from PostgreSQL, as well as Postgres Pro Standard or Postgres Pro Enterprise based on a previous PostgreSQL major version, see the migration instructions for version 13.