- Added activate_mandatory_roles option for enhanced role activation (default enabled)
- Security hardening: increased default caching_sha2_password_digest_rounds to 10,000 and fixed keyring handling bugs
- Updated default values for binlog_transaction_dependency_history_size and innodb_log_writer_threads; removed several deprecated variables/plugins
Changes in MySQL 9.5.0 (2025-10-21)
Official MySQL changelog summary with source attribution, release tags, and community reactions.
Track this MySQL release note alongside related changelog updates, risky changes, and weekly digest signals from the developer community.
Verify the original release note
Every summary should remain traceable to the original changelog or release source.
Follow this in context
Turn this MySQL release note into a weekly digest for the tools you actually use.
Create digestMore MySQL changelog updates
Fixed numerous bugs across InnoDB, JSON, optimizer, replication, X Plugin, Clone plugin, LOAD DATA handling, memory management, keyword definitions, and server start on Oracle/Red Hat Linux 9.
Fixed a large number of bugs across InnoDB, JSON handling, optimizer, replication, performance schema, X plugin, Clone plugin, and other components, including memory leaks and incorrect keyword classifications.
Introduces the Change Stream Applier (CSA) as an opt‑in, per‑channel multi‑threaded replication applier with configurable worker threads (up to 1,024) replacing the MTA.