1select @@global.ignore_builtin_innodb; 2@@global.ignore_builtin_innodb 30 4select @@session.ignore_builtin_innodb; 5ERROR HY000: Variable 'ignore_builtin_innodb' is a GLOBAL variable 6show global variables like 'ignore_builtin_innodb'; 7Variable_name Value 8ignore_builtin_innodb OFF 9show session variables like 'ignore_builtin_innodb'; 10Variable_name Value 11ignore_builtin_innodb OFF 12select * from information_schema.global_variables where variable_name='ignore_builtin_innodb'; 13VARIABLE_NAME VARIABLE_VALUE 14IGNORE_BUILTIN_INNODB OFF 15select * from information_schema.session_variables where variable_name='ignore_builtin_innodb'; 16VARIABLE_NAME VARIABLE_VALUE 17IGNORE_BUILTIN_INNODB OFF 18set global ignore_builtin_innodb=1; 19ERROR HY000: Variable 'ignore_builtin_innodb' is a read only variable 20set session ignore_builtin_innodb=1; 21ERROR HY000: Variable 'ignore_builtin_innodb' is a read only variable 22