E.8. Postgres Pro Enterprise 12.18.1
Release date: 2024-02-20
E.8.1. Overview
This release is based on PostgreSQL 12.18 and Postgres Pro Enterprise 12.17.1. All changes inherited from PostgreSQL 12.18 are listed in PostgreSQL 12.18 Release Notes. As compared with Postgres Pro Enterprise 12.17.1, this version also provides the following changes:
Added configuration parameters to enable getting information on crashes of a backend. The crash_info parameter turns on this functionality, while crash_info_dump and crash_info_location specify the contents and location of crash information files, respectively.
Added a new configuration parameter cfs_gc_respond_time, which allows specifying the time interval that CFS waits for the lock to be released from a file processed by garbage collector before writing a warning to the log.
Optimized memory consumption during selectivity estimation for each array element as compared to vanilla PostgreSQL.
Fixed the race condition between the autovacuum worker and backend processes when clearing orphaned tables, which could manifest itself in “cache lookup failed for relation” errors. Now autovacuum locks the namespaces when clearing orphaned tables.
Fixed an issue that could occur during installation of a Postgres Pro server on Debian-based systems included in a domain with the
postgresuser.Fixed the output of pg-setup, which erroneously displayed the locale from the
LANGenvironment variable at cluster initialization. Now the message about locale is not displayed at this stage.Fixed an issue that could occur when a CFS garbage collection worker process failed. Because the worker did not restart automatically, the server restart was needed to continue. Now the worker gets restarted after 10 seconds of its unavailability.
Fixed the retention of deleted files in CFS by reducing the lifetime of temporary CFS files that occur during the garbage collector work or during the
VACUUM FULLoperation.Ended support for Rosa Enterprise Linux Server 7.
Ended support for ROSA COBALT (server edition) based on Rosa platform 7.
Upgraded orafce to version 4.9.2.
Upgraded pg_filedump to version 16.1.
Upgraded pg_probackup to version 2.7.2 Enterprise, which provides optimizations and bug fixes. Notable changes are as follows:
Optimized the use of memory during backups in the remote mode.
Fixed an issue that occurred during an incremental backup when a table that was not yet copied got removed from CFS.
Fixed the order of processing WAL files by the
archive-pushcommand when the number of WAL files exceeds the specified--batch-size.Fixed an error “WAL segment is absent” that could occur when the size of a WAL record being logged exceeded the size of a WAL segment.
Fixed a bug that occurred when creating a versioned bucket in VK Cloud.
Fixed segmentation fault that occurred during execution of the
mergecommand in S3.
Upgraded pg_repack to version 1.5.0.
Upgraded pg_variables, which now provides iterator functionality for any collections, as well as functions to work with general collection variables. These functions allow accessing collection elements by a key that can have either integer or text type. These enhancements facilitate migration of Oracle code that processes collections.
Upgraded pgpro_stats to version 1.7, which provides optimizations and bug fixes:
Similarly to a pg_stat_statements fix, changed pgpro_stats to read its “query texts” file in units of at most 1GB. Such large query text files are very unusual, but if they do occur, the previous coding would fail on Windows 64 (which rejects individual read requests of more than 2GB).
Implemented backward compatibility of
pgpro_stats_statementsandpgpro_stats_totalsfunctions. Now a newer version of the pgpro_stats shared library can be safely used with old declarations of SQL functions. Previously such cases caused a server crash.Fixed an issue that prevented output of database vacuuming statistics in the
pgpro_stats_vacuum_databaseview.
Upgraded pgpro_pwr to version 4.4, which supports pgpro_stats 1.7, as well as adds more interactive features and substring-based filtering to the report.
E.8.2. Migration to Version 12.18.1
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 migrating to the current major version of Postgres Pro Enterprise using pg_upgrade, and you want to keep the existing visibility map representation in pageinspect, you should run the VACUUM command before the upgrade.
It is strongly recommended to avoid migrating a cluster with 32-bit transaction IDs to Postgres Pro Enterprise versions below 12.16.2, if there are multitransactions in your database, as it may cause data corruption.
If you have previously migrated to Postgres Pro Enterprise 12.7.1 or lower, you must run the REINDEX command to rebuild GIN indexes.
If you have previously migrated from Postgres Pro Enterprise versions 11 or 10, you must run the REINDEX command to rebuild B-tree indexes, except for unique, covering and system indexes. If you are migrating from these versions now, rebuilding such indexes is also recommended.
If you are upgrading from Postgres Pro Enterprise versions 12.6.x or lower and take PTRACK backups using pg_probackup, retake a full backup after upgrade.
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 12.