E.17. Postgres Pro Standard 12.6.2
Release Date: 2021-04-02
E.17.1. Overview
This release is based on PostgreSQL 12.6 and Postgres Pro Standard 12.6.1. All improvements inherited from PostgreSQL 12.6 are listed in PostgreSQL 12.6 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 indexes containing at least one included column of such types.
E.17.2. Migration to Version 12.6.2
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 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.