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:

April 23, 2026

Type Change Go to page
Update - Added
  • Launched config template feature
  • New version of MySQL 8.0.45 added
  • DB Server setting feature added
    • jemalloc added to malloc-lib settings
    • Semi-sync added (MySQL 8.4 or higher)
  • User DB Config added
    • innodb_max_undo_log_size
    • sql_safe_updates
    • rpl_semi_sync_source_timeout
Update - Changed
  • Changed minimum digits for DB User ID
    • Min. 4 digits → 3 digits
  • Improved config template event_history view

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
    • Addition of optimizer_switch option items: 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/added service limits for user DB config
    • Changed the replica_preserve_commit_order configuration policy
      • Can only be set to replica_preserve_commit_order = ON
when replica_parallel_type = LOGICAL_CLOCK
  • When 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 feature (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
    • Provided operating system management features
    • Provided 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
    • Replaced 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 Provided troubleshooting guide Cloud DB for MySQL troubleshooting

    June 20, 2024

    Type Change Go to page
    Update - Added
    • Enabled expanding the Standby Master details interface
    • 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 Procedures
      • 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
    • Provided password plugin
      • Added password policy configuration feature for DB accounts
    • Provided 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 Provided 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
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