https://www.fromdual.com/tags/table_cache/Recent content in Table_cache on FromDual GmbHHugoen-GBoli.sennhauser@fromdual.com (Oli Sennhauser)oli.sennhauser@fromdual.com (Oli Sennhauser)© FromDual GmbHFri, 19 Mar 2021 16:21:24 +0000https://www.fromdual.com/blog/table-open-cache-too-small/Wed, 15 Jul 2015 06:04:36 +0000oli.sennhauser@fromdual.com (Oli Sennhauser)https://www.fromdual.com/blog/table-open-cache-too-small/<p>The Table Open Cache (<code>table_open_cache</code> or old name <code>table_cache</code>) is a cache to store file handles for all threads. The actual value of cache entries can be seen with the global status of open tables (<code>Open_tables</code>).<br> Increasing <code>table_open_cache</code> increases the number of file descriptors (<code>open_files_limit</code>) that MySQL requires.<br> You can check whether you need to increase the Table Open Cache by checking <code>Open_tables</code> and <code>Opened_tables</code>. If the value of <code>Opened_tables</code> is large and you do not use <code>FLUSH TABLES</code> often (which just forces all tables to be closed and reopened), then you should increase the value of the <code>table_open_cache</code> variable.</p>