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Cloud DB for MySQL release notes

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The latest service changes have not yet been reflected in this content. We will update the content as soon as possible. Please refer to the Korean version for information on the latest updates.

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:

June 25, 2026

Type Change Go to page
Update - Added
  • Added MySQL 8.4.8.
  • Provided the latest kernel version (G2 and G3 generations).
    • OS: Rocky 8.10, Navix 8.10.
    • Kernel version: 4.18.0-553.124.1.el8_10.
  • Added the DB metrics.
    • Undo size (size of the undo file in use).
  • Provided the Manual Backup feature.
    • Enabled snapshot-based backups at any time. (Supported only for G3-generation HA DB services.)
Update - Changed Enabled caching_sha2_password for the ha_admin account used for HA Monitor ↔ Agent communication. DB Server
Update - Fixed Fixed REVOKE error (1141) for CRUD/READ users when using ACL MODIFY. DB Server

April 23, 2026

Type Change Go to page
Update - Added
  • Released config template feature.
  • Added MySQL 8.0.45.
  • Added DB Server setting feature.
    • Added jemalloc to malloc-lib settings.
    • Added Semi-sync (MySQL 8.4 or higher).
  • Added User DB Config.
    • 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
  • Released MySQL 8.4 major version (MySQL 8.4.6).
  • Released MySQL 8.0 → 8.4 major version upgrade feature.
  • [DB Dashboard] Added new charts.
    • Connection Percent (%).
    • Failover Status.
Update - Changed
  • Improved the speed of the Slow Log analysis view.
  • 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
  • Added User DB Config.
    • binlog_transaction_dependency_tracking
    • performance_schema_digests_size
    • Added optimizer_switch option items: skip_scan = off
 DB Server
Update - Changed
  • Changed the User DB config default value.
    • Changed the default value of slave_parallel_type from DATABASE to LOGICAL_CLOCK.
    • Changed the default value of max_prepared_stmt_count from 1048576 to 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 Released G3 generation (KR, JP). DB Server
Update - Changed
  • Restricted certain Target DB features on the day Database Migration Service is used.
    • Added Slave.
    • OS upgrade.
    • Point-in-time recovery.
    • Changed 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.
  • Added MySQL 8.0.42.
  • When a replication error or delay occurs, the Standby Master status changes to Unknown, and failover is unavailable.
 DB Server

May 8, 2025

Type Change Go to page
Update - Added
  • Added User DB Config.
    • 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.
  • Added User DB Config.
    • 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.
  • Added User DB Config.
    • 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 Added MySQL 8.0.40. -
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
  • Added User DB Config.
    • 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.
  • Added MySQL 8.0.36.
  • Added a Slow Log analysis feature.
  • Added a feature to view query execution history for a specific session.
  • Added a return protection setting.
  • Added User DB Config.
    • innodb_open_files
    • innodb_thread_concurrency
    • innodb_io_capacity
    • optimizer_switch
  • Added a value 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
  • Added the monitoring graph.
  • Added the InnoDB Buffer Pool graph.
 Monitoring
Update - Miscellaneous Reorganized user guide composition and content. Cloud DB for MySQL overview

April 25, 2024

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

March 21, 2024

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

January 25, 2024

Type Change Go to page
Update - Added
  • Added MySQL 8.0.34.
  • Added User DB Config.
    • 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
  • Added major version upgrade feature.
  • Added DB Server setting feature.
    • Added Malloc-lib change feature.
  • Added User DB Config.
    • 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
  • Added MySQL 8.0.32.
  • Added User DB Config.
    • internal_tmp_mem_storage_engine
 DB Server

April 20, 2023

Type Change Go to page
Update - Added
  • Created a new DB service when restoring from a backup file.
  • Added User DB Config.
    • 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
  • Added MySQL 5.7.40.
  • 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
  • Added the monitoring graph.
    • Added the Replication Status graph (Replication Stop status monitoring).
 Monitoring

November 22, 2022

Type Change Go to page
Update - Added
  • Added a feature to send a user notification when Standby Master reconstruction is complete.
  • Added User DB Config.
    • performance_schema_max_sql_text_length
    • performance_schema_consumer_events_waits_current
    • performance_schema_consumer_events_statements_history_long
  • Added Event History records for user stored procedure calls.
    • 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
  • Added monitoring graph collection and display metrics.
    • innodb_buffer_pool_total
    • innodb_buffer_pool_used
    • innodb_buffer_pool_modified
 Monitoring

December 21, 2021

Type Change Go to page
Update - Added
  • Added multi zone specifications.
  • Added DB Config.
    • innodb_ft_result_cache_limit
    • slave_parallel_type
    • slave_parallel_workers
 DB Server
Update - Miscellaneous Reorganized user guide 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
Update - Deprecated Deprecated the Germany Region service. -

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 guide 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 permission to user accounts available from MySQL version 8.0.23. -

December 15, 2022

Type Change Go to page
Update - Added
  • Added a feature to send a user notification when Standby Master reconstruction is complete.
  • Added User DB Config.
    • performance_schema_max_sql_text_length
    • performance_schema_consumer_events_waits_current
    • performance_schema_consumer_events_statements_history_long
  • Added Event History records for user stored procedure calls.
    • ncp_create_db()
    • ncp_kill_query()
    • ncp_kill_session()

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
  • Added a feature for changing DB server name.
  • Added MySQL 5.7.37.
  • Added Standby Master reinstallation and Replication Skip features.
  • Added User DB Config.
    • collation_server
    • connect_timeout
    • (For Stand Alone) expire_logs_days / binlog_expire_logs_seconds
    • (For Stand Alone) log-bin
 DB Server
Update - Changed
  • Improved query timeline Excel download feature (Download CSV).
  • Applied DB error message codes and added multilingual support.
  • Improved the monitoring graph.
    • Changed the interval settings for each view period.
    • Added MIN and MAX aggregation metrics.
    • Added the monitoring graph (added DB Dashboard - Connection Aborted).
 Monitoring

February 17, 2022

Type Change Go to page
Update - Added Provided Object Storage upload APIs. DB Server

December 21, 2021

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