How to set memory in mysql database?

The memory settings for the MySQL database can be adjusted by modifying the my.cnf configuration file.

1. Open the my.cnf configuration file, which is typically located in the /etc folder within the MySQL installation directory.
2. Search for and modify the following parameters:
3. innodb_buffer_pool_size specifies the amount of memory used by the InnoDB storage engine. It is recommended to allocate a significant portion of memory to this parameter, such as setting innodb_buffer_pool_size to 70% of total memory based on server and database size.
4. Specify the amount of memory used by the MyISAM storage engine with key_buffer_size. Adjust this setting based on the server’s memory and database size, such as key_buffer_size = 20% of total memory.
5. query_cache_size is used to specify the memory size allocated for query cache. If the query cache is too small, it may be advisable to disable it by setting query_cache_size to 0.
6. Save and close the my.cnf file.
7. Restart the MySQL service for the configuration changes to take effect.

Please adjust the memory size based on the actual server conditions and database workload. If unsure, you can utilize MySQL’s performance monitoring tool to observe the database’s performance and adjust accordingly.