E.13. Postgres Pro Enterprise 10.16.1
Release date: 2021-03-01
E.13.1. Overview
This release is based on PostgreSQL 10.16 and Postgres Pro Enterprise 10.15.1. All changes inherited from PostgreSQL 10.16 are listed in PostgreSQL 10.16 Release Notes. Other major changes and enhancements are as follows:
Deprecated the
cfs_compress_small_relationsparameter. Small relations are still compressed by default and will not differ from the bigger ones. Make sure to keep the existing parameter setting intact for the lifetime of your database cluster.Fixed a bug in the CFS implementation that resulted in disabling compression for all relations when the
cfs_compress_temp_relationsparameter was set.Added the
pg_snapshot_anyfunction to help superusers explore corrupted databases. See Section 9.26.11 for details.Aligned the behavior of the parameters
idle_session_timeoutandidle_in_transaction_session_timeoutwith how they will behave in a future PostgreSQL release. Specifically, theidle_session_timeoutparameter now applies only when outside a transaction.Upgraded pg_probackup to the latest version 2.4.10. Major improvements over the previously included version 2.4.2 are as follows:
Incremental restore with
--forceflag now allows you to overwrite the contents of the directory specified byPGDATAin case of system ID mismatch. Previously this resulted in an error.It is now possible to restore and validate backups from a read-only filesystem.
In-place merge is now disabled only if the storage format changed.
Non-exclusive backup locks are implemented, which enables concurrent validate and restore. Backup shared locks are now released at the process exit.
Streamed WAL segments are now added to the backup filelist on the fly and fsynced to disk at the end of the backup.
See pg_probackup documentation for details.
Fixed a bug in pgpro_scheduler due to which jobs scheduled to run exactly at the start of an hour (but at a two-hour or larger interval) were not executed at all.
Added pgpro_controldata utility to display control information of a PostgreSQL/Postgres Pro database cluster and compatibility information for a cluster and/or server.
Fixed the behavior of pg_wait_sampling in case of interrupting a client backend that accessed the shared queue. Previously, the pg_wait_sampling collector could hang in such cases and block other backends trying to read the
pg_wait_sampling_profileview.
E.13.2. Migration to Version 10.16.1
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.
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 Enterprise 10.11.1 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 10.12.1 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
Starting from Postgres Pro Enterprise 10.11.1, 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.
When upgrading from versions 10.6.2 or lower, you must run the REINDEX command to rebuild GIN, GiST, and SP-GiST indexes to fix replication issues that could be observed in these versions. You should also retake all backups for these versions if your database had such indexes.
When upgrading from versions 10.3.3 or lower, you have to rebuild GiST indexes built over columns of the intarray type, as well as indexes that use mchar or mvarchar types.
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 10. 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.