MySQL Information Sources • metadata_locks_cache_size : Size of metadata locks cache. Removed in MySQL 8.0.13. • metadata_locks_hash_instances : Number of metadata lock hashes. Removed in MySQL 8.0.13. • multi_range_count : Maximum number of ranges to send to table handler at once during range selects. Removed in MySQL 8.0.3. • old_passwords : Selects password hashing method for PASSWORD(). Removed in MySQL 8.0.11. • partition : Enable (or disable) partitioning support. Removed in MySQL 8.0.0. • query_cache_limit : Do not cache results that are bigger than this. Removed in MySQL 8.0.3. • query_cache_min_res_unit : Minimal size of unit in which space for results is allocated (last unit is trimmed after writing all result data). Removed in MySQL 8.0.3. • query_cache_size : Memory allocated to store results from old queries. Removed in MySQL 8.0.3. • query_cache_type : Query cache type. Removed in MySQL 8.0.3. • query_cache_wlock_invalidate : Invalidate queries in query cache on LOCK for write. Removed in MySQL 8.0.3. • secure_auth : Disallow authentication for accounts that have old (pre-4.1) passwords. Removed in MySQL 8.0.3. • show_compatibility_56 : Compatibility for SHOW STATUS/VARIABLES. Removed in MySQL 8.0.1. • skip-partition : Do not enable user-defined partitioning. Removed in MySQL 8.0.0. • sync_frm : Sync .frm to disk on create. Enabled by default. Removed in MySQL 8.0.0. • temp-pool : Using this option causes most temporary files created to use small set of names, rather than unique name for each new file. Removed in MySQL 8.0.1. • time_format : TIME format (unused). Removed in MySQL 8.0.3. • tx_isolation : Default transaction isolation level. Removed in MySQL 8.0.3. • tx_read_only : Default transaction access mode. Removed in MySQL 8.0.3. 1.5 MySQL Information Sources This section lists sources of additional information that you may find helpful, such as MySQL websites, mailing lists, user forums, and Internet Relay Chat. •MySQL Websites •MySQL Community Support at the MySQL Forums •MySQL Enterprise MySQL Websites The primary website for MySQL documentation is https://dev.mysql.com/doc/. Online and downloadable documentation formats are available for the MySQL Reference Manual, MySQL Connectors, and more. The MySQL developers provide information about new and upcoming features as the MySQL Server Blog. 70