AWS AmazonRDS documentation change
Summary
Added documentation for Aurora PostgreSQL Limitless Database version 16.13-limitless including features, enhancements, and bug fixes. Also added patch versions 16.10.101 and 16.8.104.
Security assessment
The changes document new features, performance improvements, and bug fixes. While bug fixes include crash resolutions and deadlock reductions, none explicitly address security vulnerabilities or mention CVE/security advisories. The file descriptor leak fix in 16.8.104 is a stability issue, not a confirmed security vulnerability.
Diff
diff --git a/AmazonRDS/latest/AuroraPostgreSQLReleaseNotes/limitless-updates.md b/AmazonRDS/latest/AuroraPostgreSQLReleaseNotes/limitless-updates.md index 3326ac094..b634844bb 100644 --- a//AmazonRDS/latest/AuroraPostgreSQLReleaseNotes/limitless-updates.md +++ b//AmazonRDS/latest/AuroraPostgreSQLReleaseNotes/limitless-updates.md @@ -7 +7 @@ -Aurora PostgreSQL Limitless Database 16.11-limitlessAurora PostgreSQL Limitless Database 16.10-limitlessAurora PostgreSQL Limitless Database 16.9-limitlessAurora PostgreSQL Limitless Database 16.8-limitlessAurora PostgreSQL Limitless Database 16.6-limitlessAurora PostgreSQL Limitless Database 16.4-limitless +Aurora PostgreSQL Limitless Database 16.13-limitlessAurora PostgreSQL Limitless Database 16.11-limitlessAurora PostgreSQL Limitless Database 16.10-limitlessAurora PostgreSQL Limitless Database 16.9-limitlessAurora PostgreSQL Limitless Database 16.8-limitlessAurora PostgreSQL Limitless Database 16.6-limitlessAurora PostgreSQL Limitless Database 16.4-limitless @@ -18,0 +19,2 @@ Amazon Amazon Aurora PostgreSQL Limitless Database follows the same engine versi + * Amazon Aurora PostgreSQL Limitless Database version 16.13-limitless + @@ -33,0 +36,60 @@ Amazon Amazon Aurora PostgreSQL Limitless Database follows the same engine versi +## Amazon Aurora PostgreSQL Limitless Database version 16.13-limitless + +This version of Aurora PostgreSQL Limitless Database is compatible with [PostgreSQL 16.13](https://www.postgresql.org/docs/release/16.13/). For more information about the improvements in PostgreSQL 16.13, see [ Aurora PostgreSQL 16.13](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraPostgreSQLReleaseNotes/AuroraPostgreSQL.Updates.html#aurorapostgresql-versions-version1613x). + +###### Releases and patches + + * Aurora PostgreSQL Limitless Database 16.13.100, April 25, 2026 + + + + +### Aurora PostgreSQL Limitless Database 16.13.100, April 25, 2026 + +**Features** + + * Added support for batch `INSERT`, `UPDATE`, and `DELETE` operations with `RETURNING` clause. + + * Added a virtual function to show whether a prepared transaction is detached. + + + + +**Enhancements** + + * Improved performance for single-statement transactions using the extended query protocol. + + * Improved read performance with future commit time optimization for time-based MVCC readers. + + * Improved performance for single-shard `SELECT` queries by fetching all result rows at once instead of in batches. This optimization is enabled by default and can be controlled with the `rds_aurora.limitless_fetch_all` parameter. + + * Improved distributed transaction performance by enabling two-phase commit backend affinity by default. + + * Improved performance of multi-row `INSERT` statements with `RETURNING` clause by enabling batch insert optimization when the `RETURNING` list consists of `*` and column references. + + * Reduced commit log extension spikes through proactive segment extension. + + + + +**Bug fixes** + + * Fixed an issue where `SELECT` queries crashed when a sharded table attribute was referenced in a function. + + * Fixed an issue where calling `nextval` on a sequence inside an explicit transaction blocked concurrent `nextval` calls on the same sequence when the call triggered a chunk refresh. The refresh held an `AccessExclusiveLock` on the sequence until the parent transaction ended, rather than releasing it when the chunk update completed. + + * Fixed a crash caused by SIMD alignment. + + * Fixed an issue where queries hung indefinitely when retrieving results from shard nodes under certain connection conditions. + + * Fixed an issue where client and database connections weren't properly reset on RPC connection timeout and broken connections. + + * Fixed an issue where `DROP DATABASE` with `FORCE` option intermittently failed with `database is being accessed by other users`. + + * Reduced distributed deadlocks generated by autovacuum with table `DDL` operations. + + * Fixed an issue where `CREATE SEQUENCE` failed with `not enough values to create distributed sequence` when using a narrow sequence range (such as the `smallint` type or a small `MAXVALUE`) with an `INCREMENT BY` value greater than 1. The automatic chunk size adjustment didn't account for the increment value, so it couldn't shrink the chunk size enough to fit the sequence range. + + + + @@ -81,0 +144,2 @@ This version of Aurora PostgreSQL Limitless Database is compatible with [Postgre + * Aurora PostgreSQL Limitless Database 16.10.101 + @@ -86,0 +151,18 @@ This version of Aurora PostgreSQL Limitless Database is compatible with [Postgre +### Aurora PostgreSQL Limitless Database 16.10.101 + +**Enhancements** + + * Enhanced `EXPLAIN` output for `INSERT INTO` with `SELECT`. + + + + +**Bug fixes** + + * Fixed a crash when joining a table with a set-returning function that references the table's columns. + + * Fixed a crash caused by SIMD alignment issues with generic wrapper functions. + + + + @@ -286,0 +369,2 @@ This version of Aurora PostgreSQL Limitless Database is compatible with [Postgre + * Aurora PostgreSQL Limitless Database 16.8.104, May 12, 2026 + @@ -297,0 +382,9 @@ This version of Aurora PostgreSQL Limitless Database is compatible with [Postgre +### Aurora PostgreSQL Limitless Database 16.8.104, May 12, 2026 + +**Bug fixes** + + * Fixed a file descriptor leak in `rds_aurora_limitless_get_max_connections`. + + + +