E.1. Postgres Pro Standard 12.22.1
Release Date: 2024-11-27
E.1.1. Overview
This is expected to be the last Postgres Pro Standard release in the 12 series. Users are encouraged to update to a newer Postgres Pro Standard major version soon.
This release is based on PostgreSQL 12.22 and Postgres Pro Standard 12.20.1. All improvements inherited from PostgreSQL 12.22 are listed in PostgreSQL 12.22 Release Notes. Other major changes and enhancements are as follows:
Allowed transformation of correlated
INsubqueries into joins.Implemented the ability to dump the state of a single backend process by sending the dump signal.
Fixed a segmentation fault, which could occur while executing the
COPY TOcommand when using the online_analyze module.Fixed an issue to avoid potential stack overflow in scenarios involving a large number of subtransactions. Now when handling the process of committing a transaction, iteration is used instead of tail recursion.
Fixed a memory leak that could occur when the
EXPLAINcommand's output produced over 64 columns.Fixed an issue where
EXPLAIN ANALYZEshowed incorrect counts of inserted and conflicted tuples during row inserts with conflicting primary keys when usingON CONFLICT DO NOTHING.Fixed an issue that could slow down query execution. The reason was that the optimizer selected a suboptimal index due to the lack of its cost estimation after removing redundant clauses with the enable_appendorpath option set to
ON.Upgraded mamonsu to version 3.5.9, which provides optimizations and bug fixes. Notable changes are as follows:
Added support for systems where setuptools version greater than 67.7.2 is installed.
Ended the use of dotted
user:groupspecification at the RPM pre-install stage.
Upgraded oracle_fdw to version 2.7.0.
Upgraded orafce to version 4.13.5.
Upgraded pg_filedump to version 17.1, which specifically fixed an issue that could cause pg_filedump to crash with a segmentation fault when handling incomplete pages.
Upgraded pg_portal_modify to version 0.3.4.
Upgraded pg_probackup to version 2.8.5, which provides the following optimizations and bug fixes:
Enabled the output of the
versioncommand in the JSON format using--format=json.Added the
--alloption to theamcheckcommand, which allows performing all the checks in a single command.Added support for the
includeparameter in the configuration file. The contents of the file specified inincludegets added to the configuration file instead of this parameter.Added a possibility to specify an individual number of threads for execution of a backup and its subsequent validation by specifying the
--backup-threadsand--validate-threadsoption, respectively.Changed the priority of setting
PGDATAandBACKUP_PATH. Now the values from the command-line options take precedence.Added validation of WAL files for backups to be merged by the
mergecommand.An error message that was issued when the
validatecommand run with the--waloption found an archive in theDEGRADEDstatus has been replaced with a warning since backups in this status do not affect the restore correctness as a whole.Fixed an issue that could occur if the command line was too long.
Fixed an issue that could occur during validation or restore when the PITR from a previous timeline was performed.
Upgraded pgpro_controldata to version 17.1.0.
Upgraded pgpro_stats to version 1.8, which supports Postgres Pro 17. Notable changes are as follows:
Updated
pgpro_stats_statementsandpgpro_stats_totalsviews to include fields added to pg_stat_statements. Related functions were updated accordingly.Streamlined access to views and functions. Specifically, access to the
pgpro_stats_archiver,pgpro_stats_vacuum_database,pgpro_stats_vacuum_tables, andpgpro_stats_vacuum_indexesviews was granted to all users. Previously, these views required explicitly granting access rights. Access to execution of thepgpro_stats_trace_resetfunction, which could previously be executed by any user, was restricted to superusers.Implemented an optimization that lowers the locking time in some cases when copying metrics from the local memory to the shared memory.
Eliminated an excessive check of holding the lock when accessing the hash table of session-tracing filters.
Fixed processing of the
pgpro_stats.stats_temp_directoryconfiguration parameter. Previously after the server restart for changes to this parameter value to take effect, the fatal error “pfree called with invalid pointer” could occur when processing this parameter.Fixed an issue that could occur during session tracing and cause errors “could not write file ""pg_stat/pgpro_stats_filters.trace.tmp"": No such file or directory”. Concurrent writing from different sessions to a trace file is fixed now, so processes can write to the trace file in parallel without collisions.
Upgraded pgpro_pwr to version 4.7, which provides new features, optimizations and bug fixes. Notable changes are as follows:
A subsample feature to collect relatively fast changing data.
New report tables, specifically regarding session states.
Support for new Postgres Pro 17 statistics.
A possibility not to reset statistics of the statistics collecting extension during taking a sample.
The change of the type for the field that tracks transaction IDs in a certain table from
xidtotext. The use of thexidtype could previously cause a failure of pg_upgrade when upgrading from Postgres Pro Standard to Postgres Pro Enterprise.
Upgraded pg_repack to version 1.5.1.
Upgraded pg_wait_sampling to provide tracking of subquery IDs and utility statements and to add the new
pg_wait_sampling.sample_cpuparameter, which allows specifying the sampling mode that determines whether to perform sampling of on-CPU backends.Upgraded PTRACK to prevent possible issues with PTRACK backups by setting the
ptrack.mapfile for automatic deletion when PTRACK is disabled.
E.1.2. Migration to Version 12.22.1
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.
ABI versions may change between minor releases of Postgres Pro. If this is the case, and you see the ABI mismatch error when trying to run your extension, make sure to install a new version of the extension supplied with a new release of Postgres Pro, or recompile your third-party extension to be able to use it with the current version of Postgres Pro.
If you take backups using pg_probackup and you have previously upgraded it to version 2.8.0 or 2.8.1, make sure to upgrade it to version 2.8.2 or higher and retake a full backup after upgrade, since backups taken using those versions might be corrupted. If you suspect that your backups taken with versions 2.8.0 or 2.8.1 may be corrupted, you can validate them using version 2.8.2.
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 12.1.1, which could lead to incorrect query optimization. In particular, it negatively affected query execution if row-level security policy was in use. Version 12.2.1 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
When upgrading from Postgres Pro versions 12.6.1 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 12.6.2 or lower and take PTRACK backups using pg_probackup, retake a full backup after upgrade.