E.15. Postgres Pro Standard 11.11.2
Release Date: 2021-04-01
E.15.1. Overview
This release is based on PostgreSQL 11.11 and Postgres Pro Standard 11.11.1. All improvements inherited from PostgreSQL 11.11 are listed in PostgreSQL 11.11 Release Notes. Other major changes and enhancements are as follows:
Fixed the signed integer overflow in ptrack that could occur when ptrack map data in RAM was saved to disk. Previously, for large-size ptrack maps (
ptrack.mapsize> 17200 MB), this resulted in a “FATAL/ERROR ptrack checkpoint: stat_buf.st_size != ptrack_map_size XXX != YYY” error during a checkpoint.Fixed building of covering indexes with included columns of type for which the collation is defined in the table. The fixed defect could result in an “
ERROR: could not determine which collation to use for string comparison” error during the ANALYZE operation on the table, although single columns could be successfully analyzed. To avoid this error in future, after upgrading, rebuild covering indexes built at least with one included column.
E.15.2. Migration to Version 11.11.2
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.
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 11.6.1 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 11.7.1 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
Version 11.7.1 also fixes SIMILAR TO and POSIX regular expressions that use character classes for icu collations, so you may need to check for objects that use such regular expressions.
Starting from Postgres Pro Standard 11.6.1, the ICU library upgrade does not interfere with the server start. Before connecting to a database using ICU as the default collation, Postgres Pro compares this collation version to the one provided by the ICU library and displays a warning if the collation versions do not match; you may need to rebuild the objects that depend on the default collation if you think the collation change may affect the sort order of your data. To suppress these warnings, you can use the ALTER COLLATION "default" REFRESH VERSION command, as explained in ALTER COLLATION.
Since pg_probackup delivery model changed in Postgres Pro Standard 11.2.1, 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 Postgres Pro versions 11.11.1 or lower, rebuild covering indexes containing at least one included column of type for which the collation was defined in the table.
To migrate from PostgreSQL or a Postgres Pro Standard release based on a previous PostgreSQL major version, see the migration instructions for version 11. If you are opting for a dump/restore, make sure to use the --add-collprovider option to correctly choose the provider for the default collation of the migrated database.