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select @@global.debug_no_thread_alarm;
@@global.debug_no_thread_alarm
0
select @@session.debug_no_thread_alarm;
ERROR HY000: Variable 'debug_no_thread_alarm' is a GLOBAL variable
show global variables like 'debug_no_thread_alarm';
Variable_name Value
debug_no_thread_alarm OFF
show session variables like 'debug_no_thread_alarm';
Variable_name Value
debug_no_thread_alarm OFF
select * from information_schema.global_variables where variable_name='debug_no_thread_alarm';
VARIABLE_NAME VARIABLE_VALUE
DEBUG_NO_THREAD_ALARM OFF
select * from information_schema.session_variables where variable_name='debug_no_thread_alarm';
VARIABLE_NAME VARIABLE_VALUE
DEBUG_NO_THREAD_ALARM OFF
set global debug_no_thread_alarm=1;
ERROR HY000: Variable 'debug_no_thread_alarm' is a read only variable
set session debug_no_thread_alarm=1;
ERROR HY000: Variable 'debug_no_thread_alarm' is a read only variable
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