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