Cloud DB for MySQL release notes

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Available in Classic and VPC

Keep track of changes to the Cloud DB for MySQL user guide. The release notes include:

  • New
    • Initial release
  • Update
    • Added: New features
    • Changed: Feature enhancements
    • Fixed: Bug fixes
    • Deprecated: Feature deprecations or service shutdown
    • Miscellaneous: Documentation changes

Read on for detailed descriptions of each release.

VPC

The following table describes updates to the VPC environment:

January 22, 2026

Type Change Go to page
Update - added
  • MySQL 8.4 major version released (MySQL 8.4.6)
  • MySQL 8.0 -> 8.4 major version upgraded feature released
  • [DB Dashboard] New charts added
    • Connection Percent(%)
    • Failover Status
Update - changed
  • Improved query speed for Slow Log analysis.
  • [Database Migration Service] Restricted point-in-time recovery for Cloud DB for MySQL to times prior to completion or abnormal termination when deleting Database Migration Service tasks.

November 20, 2025

Type Change Go to page
Update - added
  • User DB Config added
    • binlog_transaction_dependency_tracking
    • performance_schema_digests_size
    • optimizer_switch option added: skip_scan = off
DB Server
Update - changed
  • User DB config default value changed
    • slave_parallel_type Default setting changed (DATABASE -> LOGICAL_CLOCK)
    • max_prepared_stmt_count Default setting changed (1048576 -> 16382)
  • Changed and added constraints for user DB configuration.
    • Changed the replica_preserve_commit_order setting policy.
      • If replica_parallel_type = LOGICAL_CLOCK, replica_preserve_commit_order = ON can be configured.
    • When using autocommit = OFF, slave_parallel_workers(replica_parallel_workers) can be configured to 0 only.
  • Added support for using DB names in reserved word format within sys.ncp_create_db() procedures
 DB Server

September 18, 2025

Type Change Go to page
Update - added
  • Added rolling specification change support (G3).
  • Enabled automatic registration of Time Zone data when creating a new cluster.
 DB Server
Update - miscellaneous Added an integration guide for external monitoring tools. External monitoring tool integration.

July 17, 2025

Type Change Go to page
Update - added
  • G3 generation released (KR, JP)
 DB Server
Update - changed
  • Some target DB features are restricted on the day you use Database Migration service
    • Add Slave
    • OS upgrade
    • Point-in-time recovery
    • Change Multi Zone configuration
 DB Server

June 19, 2025

Type Change Go to page
Update - added
  • Added support for entering DB user IPs in CIDR format.
  • New version of MySQL 8.0.42 added.
  • When replication errors or delays occur, the Standby Master status changes to Unknown, and failover is not available.
 DB Server

May 8, 2025

Type Change Go to page
Update - added
  • User DB Config added
    • innodb_adaptive_flushing_lwm
    • innodb_flush_log_at_timeout
    • innodb_flush_method
    • innodb_io_capacity_max
    • innodb_lru_scan_depth
    • innodb_max_dirty_pages_pct_lwm
    • sync_binlog
    • table_definition_cache
    • innodb_doublewrite_pages
    • temptable_max_mmap
    • temptable_max_ram
 DB Server
Update - changed
  • Changed the input range for user DB config.
    • innodb_log_file_size
 DB Server

April 17, 2025

Type Change Go to page
Update - added
  • Added support for creating a new DB server using backups stored in Object Storage.
  • Added support for creating a new service through point-in-time recovery and changing specifications during creation.
  • User DB Config added
    • Added sql_require_primary_key
    • Changed the default value of sql_require_primary_key from OFF to ON for versions 8.0.40 and later.

March 20, 2025

Type Change Go to page
Update - added
  • Provides operating system management features.
  • Provides an option to select server specifications when creating a new service from a backup file.
  • User DB Config added
    • explicit_defaults_for_timestamp
    • thread_stack
    • table_open_cache_instances
    • innodb_max_dirty_pages_pct
    • innodb_doublewrite
    • innodb_page_cleaners
    • innodb_purge_threads
Update - changed
  • Query Timeline page processing
  • disabled_storage_engine ="MEMORY"
 Monitoring

January 16, 2025

Type Change Go to page
Update - added
  • New version of MySQL 8.0.40 added.
 -
Update - changed
  • Reduced the default value of innodb_buffer_pool_size for new servers.
  • Applied tcmalloc as the default allocator when creating new clusters
 -

November 21, 2024

Type Change Go to page
Update - deprecated
  • Blocked new service creation for MySQL 5.7.
 -

October 17, 2024

Type Change Go to page
Update - added
  • Replaces Base OS (Rocky 8.10)
  • Improved DB Config management.
  • Improved backup retention period settings.
  • Integrated DB user change history with CAT.
 DB Server
Update - deprecated
  • Disabled data storage encryption feature.
 -

July 23, 2024

Type Change Go to page
Update - added User DB Config added
  • log_output
  • bulk_insert_buffer_size
 DB Server
Update - miscellaneous Provides troubleshooting guide. Cloud DB for MySQL troubleshooting

June 20, 2024

Type Change Go to page
Update - added
  • Enabled expanding the Standby Master details view.
  • Permission can be selected for system tables when managing DB users.
  • New version of MySQL 8.0.36 added.
  • Added a Slow Log analysis feature.
  • Added a feature to view query execution history for a specific session.
  • Added a return protection setting.
  • User DB Config added
    • innodb_open_files
    • innodb_thread_concurrency
    • innodb_io_capacity
    • optimizer_switch
  • Added values for collation_connection:
    • utf8mb4_unicode_ci
    • euckr_korean_ci
    • utf8_general_ci
  • Added User Stored Procedure.
    • ncp_grant_role()
    • ncp_revoke_role()
 DB Server
Update - changed
  • Monitoring graph added
  • InnoDB Buffer Pool graph added
 Monitoring
Update - miscellaneous Reorganized user guides composition and content. Cloud DB for MySQL overview

April 25, 2024

Type Change Go to page
Update - added
  • User DB Config added
  • log_error_suppression_list
 DB Server

March 21, 2024

Type Change Go to page
Update - added User DB Config added
  • password_reuse_interval
  • password_history
 DB Server

January 25, 2024

Type Change Go to page
Update - added
  • New version of MySQL 8.0.34 added.
  • User DB Config added
    • default_collation_for_utf8mb4
    • collation_connection
    • innodb_stats_auto_recalc
    • innodb_stats_include_delete_marked
DB Server

November 23, 2023

Type Change Go to page
Update - added
  • Major version upgrade feature
  • DB Server setting feature added
    • Malloc-lib change feature added
  • User DB Config added
    • innodb_buffer_pool_instances
    • innodb_buffer_pool_chunk_size
    • max_heap_table_size
 DB Server

May 25, 2023

Type Change Go to page
Update - added
  • New version of MySQL 8.0.32 added.
  • User DB Config added
    • internal_tmp_mem_storage_engine
DB Server

April 20, 2023

Type Change Go to page
Update - added
  • Creates a new DB service when restoring from a Backup file.
  • User DB Config added
    • innodb_buffer_pool_dump_at_shutdown
    • innodb_buffer_pool_load_at_startup
    • innodb_buffer_pool_dump_pct
    • innodb_log_file_size
    • innodb_log_files_in_group
    • innodb_log_buffer_size
    • innodb_print_all_deadlocks
    • innodb_online_alter_log_max_size

February 23, 2023

Type Change Go to page
Update - added
  • New version of MySQL 5.7.40 added.
  • Provides password plugin
    • Added password policy configuration feature for DB accounts
  • Provides Audit plugin
    • Added features to store and view DB access history
DB Server
Update - changed
  • Monitoring graph added
    • Replication Status graph added (Replication Stop status monitoring)
 Monitoring

November 22, 2022

Type Change Go to page
Update - added
  • Sends a user notification when Standby Master reconstruction is complete.
  • User DB Config added
    • performance_schema_max_sql_text_length
    • performance_schema_consumer_events_waits_current
    • performance_schema_consumer_events_statements_history_long
  • User stored procedure call history and event history records added
    • ncp_create_db()
    • ncp_kill_query()
    • ncp_kill_session()
DB Server

July 21, 2022

Type Change Go to page
Update - added
  • Kill process feature through stored procedure
    • kill query
    • kill session
 DB Server
Update - changed
  • Collect monitoring graphs and add items to be exposed
    • innodb_buffer_pool_total
    • innodb_buffer_pool_used
    • innodb_buffer_pool_modified
 Monitoring

December 21, 2021

Type Change Go to page
Update - added
  • Multi zone specifications added
  • DB Config added
    • innodb_ft_result_cache_limit
    • slave_parallel_type
    • slave_parallel_workers
 DB Server
Update - miscellaneous Reorganized user guides composition and content. Cloud DB for MySQL overview

Classic

The following table describes updates to the Classic environment:

October 17, 2024

Type Change Go to page
Deprecated Germany Region service deprecated -

July 23, 2024

Type Change Go to page
Update - miscellaneous Provides troubleshooting guide. Cloud DB for MySQL troubleshooting

June 20, 2024

Type Change Go to page
Update - miscellaneous Reorganized user guides composition and content.
  • Separated menus by VPC and Classic platform environments.
 Cloud DB for MySQL overview

March 21, 2024

Type Change Go to page
Update - added
  • Added FLUSH_TABLES authority to user accounts available from MySQL version 8.0.23.
-

December 15, 2022

Type Change Go to page
Update - added
  • Sends a user notification when Standby Master reconstruction is complete.
  • User DB Config added
    • performance_schema_max_sql_text_length
    • performance_schema_consumer_events_waits_current
    • performance_schema_consumer_events_statements_history_long
  • User stored procedure call history and event history records added
    • ncp_create_db()
    • ncp_kill_query()
    • ncp_kill_session()
  • DB Server
  • Event
    		•

    August 18, 2022

    Type Change Go to page
    Update - added
    • Kill process feature through stored procedure
      • kill query
      • kill session
    		 -

    May 26, 2022

    Type Change Go to page
    Update - added
    • Feature for changing DB server name
    • New version of MySQL 5.7.37 added.
    • Reinstall standby master and replication skip features added
    • User DB Config added
      • collation_server
      • connect_timeout
      • (for Stand Alone) expire_logs_days / binlog_expire_logs_seconds
      • (for Stand Alone) log-bin
    		DB Server
    Update - changed
    • Feature when downloading query timeline Excel file (Download CSV) improved
    • DB error message code applied and multilingual support
    • Monitoring graph improved
      • Interval settings for each search period changed
      • Aggregation min and max values indicators added
      • Added monitoring graph (DB dashboard - connection aborted added).
    		 Monitoring

    February 17, 2022

    Type Change Go to page
    Update - added Object Storage upload APIs provided. DB Server

    December 21, 2021

    Type Change Go to page
    Update - added
    • DB Config added
      • innodb_ft_result_cache_limit
      • slave_parallel_type
      • slave_parallel_workers
    		 DB Server
    Update - miscellaneous Reorganized user guides composition and content. Cloud DB for MySQL overview