--source include/have_innodb.inc --source include/have_debug.inc # # exists as global only # select @@global.innodb_page_hash_locks between 1 and 1024; select @@global.innodb_page_hash_locks; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_page_hash_locks; show global variables like 'innodb_page_hash_locks'; show session variables like 'innodb_page_hash_locks'; select * from information_schema.global_variables where variable_name='innodb_page_hash_locks'; select * from information_schema.session_variables where variable_name='innodb_page_hash_locks'; # # show that it's read-only # --error ER_INCORRECT_GLOBAL_LOCAL_VAR set global innodb_page_hash_locks=1; --error ER_INCORRECT_GLOBAL_LOCAL_VAR set @@session.innodb_page_hash_locks='some';