E.2. Release Notes for Tantor SE 17.9.0#
E.2. Release Notes for Tantor SE 17.9.0 #
Release date: 2026-03-25
E.2.1. Review #
Tantor SE is a Russian-made DBMS based on the updated and improved version of the PostgreSQL DBMS. Tantor SE 17.9.0 is based on PostgreSQL 17 and includes all the new features introduced in PostgreSQL 17, as well as changes included in the PostgreSQL 17.9 and previous releases of Tantor SE.
The list of changes in Tantor SE 17.9.0 compared to the previous release is listed below.
E.2.2. DBMS Core Functionality #
The following changes have been made to improve the DBMS:
Implemented logical replication between DBMS clusters using 32-bit and 64-bit transaction identifiers.
Disabled calculation of multi-column statistics for indexes with non-key (INCLUDE) attributes, which could lead to an error when executing queries.
Fixed a bug in optimizing the pushdown of join conditions into a subquery that could lead to an error when executing queries.
E.2.3. Additional Supplied Utilities #
The pg_diag_setup utility has been updated to version 1.1.0. Enhanced shared_preload_libraries processing to preserve existing entries, avoid duplicates, and maintain the correct library order.
E.2.4. Migration to version 17.9.0 #
When upgrading within the current major version and edition, install Tantor SE 17.9.0 and restart the database server with command:
systemctl restart tantor-se-server-17
To migrate from PostgreSQL or Tantor DB, first install the latest minor version and then perform a data offload/restore by applying pg_dumpall, or use the pg_upgrade utility.
For correct execution of pg_upgrade, absolute paths to the binary directories and database cluster directories must be specified. Relative paths are not supported and may lead to errors.
Warning
When updating skipping previous major versions (for example, from version 15 to 17 at once), it is recommended to pre-execute VACUUM FREEZE for all cluster databases.
If VACUUM FREEZE is not possible, it is recommended to upgrade sequentially, installing each major version in order.