# System and Status Variables

- [Big Query Settings](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/big-query-settings.md)
- [Handling Too Many Connections](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/handling-too-many-connections.md)
- [MariaDB Optimization for MySQL Users](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/mariadb-optimization-for-mysql-users.md)
- [Optimizing key\_buffer\_size](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/optimizing-key_buffer_size.md)
- [Optimizing table\_open\_cache](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/optimizing-table_open_cache.md)
- [OQGRAPH System and Status Variables](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/oqgraph-system-and-status-variables.md)
- [Sample my.cnf Files](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/sample-mycnf-files.md)
- [Segmented Key Cache](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/segmented-key-cache.md)
- [Semisynchronous Replication Plugin Status Variables](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/semisynchronous-replication-plugin-status-variables.md)
- [InnoDB Server Status Variables](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/innodb-status-variables.md)
- [Setting Innodb Buffer Pool Size Dynamically](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/setting-innodb-buffer-pool-size-dynamically.md)
- [Sphinx Status Variables](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/sphinx-status-variables.md)
- [Spider Status Variables](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/spider-status-variables.md)
- [SQL Error Log System Variables and Options](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/sql-error-log-system-variables-and-options.md)
- [SSL/TLS Status Variables](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/ssltls-status-variables.md)
- [System and Status Variables Added By Major Release](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release.md): Discover system and status variables added by major MariaDB Server releases. This section helps you track new configuration options and monitoring metrics introduced in different versions.
- [System Variables Added in MariaDB 12.1](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-variables-added-in-mariadb-12.1.md)
- [System Variables Added in MariaDB 12.0](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-variables-added-in-mariadb-12.0.md)
- [System Variables Added in MariaDB 11.8](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-variables-added-in-mariadb-11-8.md)
- [System Variables Added in MariaDB 11.4](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-variables-added-in-mariadb-11-4.md)
- [Status Variables Added in MariaDB 11.4](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/status-variables-added-in-mariadb-11-4.md)
- [System Variables Added in MariaDB 10.11](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-variables-added-in-mariadb-10-11.md)
- [System Variables Added in MariaDB 10.6](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-variables-added-in-mariadb-10-6.md)
- [Status Variables Added in MariaDB 10.6](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/status-variables-added-in-mariadb-106.md)
- [System and Status Variables Added By Major Unmaintained Release](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release.md): Discover system and status variables added by major unmaintained MariaDB Server releases. This section provides insights into parameters from older versions, useful for understanding historical config
- [System Variables Added in MariaDB 11.7](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-11-7.md)
- [System Variables Added in MariaDB 11.6](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-11-6.md)
- [System Variables Added in MariaDB 11.5](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-11-5.md)
- [Status Variables Added in MariaDB 11.5](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/status-variables-added-in-mariadb-11-5.md)
- [System Variables Added in MariaDB 11.3](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-11-3.md)
- [System Variables Added in MariaDB 11.2](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-11-2.md)
- [System Variables Added in MariaDB 11.1](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-11-1.md)
- [System Variables Added in MariaDB 11.0](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-11-0.md)
- [Status Variables Added in MariaDB 11.0](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/status-variables-added-in-mariadb-11-0.md)
- [System Variables Added in MariaDB 10.10](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-10-10.md)
- [System Variables Added in MariaDB 10.9](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-10-9.md)
- [System Variables Added in MariaDB 10.8](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-10-8.md)
- [System Variables Added in MariaDB 10.5](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-10-5.md)
- [Status Variables Added in MariaDB 10.5](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/status-variables-added-in-mariadb-105.md)
- [System Variables Added in MariaDB 10.4](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-10-4.md)
- [Status Variables Added in MariaDB 10.4](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/status-variables-added-in-mariadb-104.md)
- [System Variables Added in MariaDB 10.3](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-10-3.md)
- [Status Variables Added in MariaDB 10.3](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/status-variables-added-in-mariadb-103.md)
- [System Variables Added in MariaDB 10.2](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-102.md)
- [Status Variables Added in MariaDB 10.2](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/status-variables-added-in-mariadb-102.md)
- [System Variables Added in MariaDB 10.1](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-101.md)
- [Status Variables Added in MariaDB 10.1](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/status-variables-added-in-mariadb-101.md)
- [System Variables Added in MariaDB 10.0](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-100.md)
- [Status Variables Added in MariaDB 10.0](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/status-variables-added-in-mariadb-100.md)
- [System Variables Added in MariaDB 5.5](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/system-and-status-variables-added-by-major-release/system-and-status-variables-added-by-major-unmaintained-release/system-variables-added-in-mariadb-55.md)