How to set global innodb_buffer_pool_size?

Question

How to set the global innodb_buffer_pool_size mySQL variable? When I set it to system display I get this error:

ERROR 1238 (HY000):         


        

Answer 1

innodb_buffer_pool_size

You should set this variable value under [mysqld] section as :

innodb_buffer_pool_size=2G

and restart MySQL service to have effect.

InnoDB buffer pool caches both data and index pages. You can set this value to 70-80% of available memory for Innodb-only installations