select @@global.slave_skip_errors; @@global.slave_skip_errors OFF select @@session.slave_skip_errors; ERROR HY000: Variable 'slave_skip_errors' is a GLOBAL variable show global variables like 'slave_skip_errors'; Variable_name Value slave_skip_errors OFF show session variables like 'slave_skip_errors'; Variable_name Value slave_skip_errors OFF select * from information_schema.global_variables where variable_name='slave_skip_errors'; VARIABLE_NAME VARIABLE_VALUE SLAVE_SKIP_ERRORS OFF select * from information_schema.session_variables where variable_name='slave_skip_errors'; VARIABLE_NAME VARIABLE_VALUE SLAVE_SKIP_ERRORS OFF set global slave_skip_errors=1; ERROR HY000: Variable 'slave_skip_errors' is a read only variable set session slave_skip_errors=1; ERROR HY000: Variable 'slave_skip_errors' is a read only variable