| Server IP : 45.40.142.9 / Your IP : 216.73.216.250 Web Server : Apache System : Linux s45-40-142-9.secureserver.net 2.6.32-754.35.1.el6.x86_64 #1 SMP Sat Nov 7 12:42:14 UTC 2020 x86_64 User : bayspec ( 506) PHP Version : 5.6.40 Disable Function : NONE MySQL : ON | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/share/mysql-test/suite/sys_vars/r/ |
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select @@global.performance_schema; @@global.performance_schema 1 select @@session.performance_schema; ERROR HY000: Variable 'performance_schema' is a GLOBAL variable show global variables like 'performance_schema'; Variable_name Value performance_schema ON show session variables like 'performance_schema'; Variable_name Value performance_schema ON select * from information_schema.global_variables where variable_name='performance_schema'; VARIABLE_NAME VARIABLE_VALUE PERFORMANCE_SCHEMA ON select * from information_schema.session_variables where variable_name='performance_schema'; VARIABLE_NAME VARIABLE_VALUE PERFORMANCE_SCHEMA ON set global performance_schema=1; ERROR HY000: Variable 'performance_schema' is a read only variable set session performance_schema=1; ERROR HY000: Variable 'performance_schema' is a read only variable