E.4. Release Notes for Tantor SE 17.5.2#
E.4. Release Notes for Tantor SE 17.5.2 #
Release date: 2025-10-13
E.4.1. Review #
Tantor SE is a Russian-made DBMS based on the updated and improved version of the PostgreSQL DBMS. Tantor SE 17.5.2 is based on PostgreSQL 17.
Below are the additional modules and utilities added to Tantor SE, as well as a list of changes to the server core.
Warning
Due to changes in the 64-bit transaction identification system, a return from version 17.5.2 to 17.5.0 is not possible.
E.4.2. DBMS Core Functionality #
The following changes have been made to improve the DBMS:
Refinement and optimization of the 64-bit transaction identification system.
Added the enable_detailed_sort_cost setting, allowing a more detailed computation of planner cost estimates for sort operations.
Fixed an error of page integrity violation on the replica.
Fixed an error
invalid memory alloc request sizewhen performingANALYZEcommand with wide tables.Fixed an error
attribute number N exceeds number of columns Mwhen using the Join Predicate Pushdown technology.Fixed an error
variable not found in subplan target listswhen using the Remove self joins technology.
E.4.3. Fixes for Additional Supplied Modules #
pg_tde — refinement and optimization of the extension.
transp_anon — fixed an issue where SELECT * FROM ONLY... was returning data from child tables. ONLY now works correctly and returns data only from the parent table.
E.4.4. Migration to version 17.5.2 #
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.