1SET @start_global_value = @@global.innodb_adaptive_flushing; 2SELECT @start_global_value; 3@start_global_value 41 5Valid values are 'ON' and 'OFF' 6select @@global.innodb_adaptive_flushing in (0, 1); 7@@global.innodb_adaptive_flushing in (0, 1) 81 9select @@global.innodb_adaptive_flushing; 10@@global.innodb_adaptive_flushing 111 12select @@session.innodb_adaptive_flushing; 13ERROR HY000: Variable 'innodb_adaptive_flushing' is a GLOBAL variable 14show global variables like 'innodb_adaptive_flushing'; 15Variable_name Value 16innodb_adaptive_flushing ON 17show session variables like 'innodb_adaptive_flushing'; 18Variable_name Value 19innodb_adaptive_flushing ON 20select * from information_schema.global_variables where variable_name='innodb_adaptive_flushing'; 21VARIABLE_NAME VARIABLE_VALUE 22INNODB_ADAPTIVE_FLUSHING ON 23select * from information_schema.session_variables where variable_name='innodb_adaptive_flushing'; 24VARIABLE_NAME VARIABLE_VALUE 25INNODB_ADAPTIVE_FLUSHING ON 26set global innodb_adaptive_flushing='OFF'; 27select @@global.innodb_adaptive_flushing; 28@@global.innodb_adaptive_flushing 290 30select * from information_schema.global_variables where variable_name='innodb_adaptive_flushing'; 31VARIABLE_NAME VARIABLE_VALUE 32INNODB_ADAPTIVE_FLUSHING OFF 33select * from information_schema.session_variables where variable_name='innodb_adaptive_flushing'; 34VARIABLE_NAME VARIABLE_VALUE 35INNODB_ADAPTIVE_FLUSHING OFF 36set @@global.innodb_adaptive_flushing=1; 37select @@global.innodb_adaptive_flushing; 38@@global.innodb_adaptive_flushing 391 40select * from information_schema.global_variables where variable_name='innodb_adaptive_flushing'; 41VARIABLE_NAME VARIABLE_VALUE 42INNODB_ADAPTIVE_FLUSHING ON 43select * from information_schema.session_variables where variable_name='innodb_adaptive_flushing'; 44VARIABLE_NAME VARIABLE_VALUE 45INNODB_ADAPTIVE_FLUSHING ON 46set global innodb_adaptive_flushing=0; 47select @@global.innodb_adaptive_flushing; 48@@global.innodb_adaptive_flushing 490 50select * from information_schema.global_variables where variable_name='innodb_adaptive_flushing'; 51VARIABLE_NAME VARIABLE_VALUE 52INNODB_ADAPTIVE_FLUSHING OFF 53select * from information_schema.session_variables where variable_name='innodb_adaptive_flushing'; 54VARIABLE_NAME VARIABLE_VALUE 55INNODB_ADAPTIVE_FLUSHING OFF 56set @@global.innodb_adaptive_flushing='ON'; 57select @@global.innodb_adaptive_flushing; 58@@global.innodb_adaptive_flushing 591 60select * from information_schema.global_variables where variable_name='innodb_adaptive_flushing'; 61VARIABLE_NAME VARIABLE_VALUE 62INNODB_ADAPTIVE_FLUSHING ON 63select * from information_schema.session_variables where variable_name='innodb_adaptive_flushing'; 64VARIABLE_NAME VARIABLE_VALUE 65INNODB_ADAPTIVE_FLUSHING ON 66set session innodb_adaptive_flushing='OFF'; 67ERROR HY000: Variable 'innodb_adaptive_flushing' is a GLOBAL variable and should be set with SET GLOBAL 68set @@session.innodb_adaptive_flushing='ON'; 69ERROR HY000: Variable 'innodb_adaptive_flushing' is a GLOBAL variable and should be set with SET GLOBAL 70set global innodb_adaptive_flushing=1.1; 71ERROR 42000: Incorrect argument type to variable 'innodb_adaptive_flushing' 72set global innodb_adaptive_flushing=1e1; 73ERROR 42000: Incorrect argument type to variable 'innodb_adaptive_flushing' 74set global innodb_adaptive_flushing=2; 75ERROR 42000: Variable 'innodb_adaptive_flushing' can't be set to the value of '2' 76set global innodb_adaptive_flushing=-3; 77ERROR 42000: Variable 'innodb_adaptive_flushing' can't be set to the value of '-3' 78select @@global.innodb_adaptive_flushing; 79@@global.innodb_adaptive_flushing 801 81select * from information_schema.global_variables where variable_name='innodb_adaptive_flushing'; 82VARIABLE_NAME VARIABLE_VALUE 83INNODB_ADAPTIVE_FLUSHING ON 84select * from information_schema.session_variables where variable_name='innodb_adaptive_flushing'; 85VARIABLE_NAME VARIABLE_VALUE 86INNODB_ADAPTIVE_FLUSHING ON 87set global innodb_adaptive_flushing='AUTO'; 88ERROR 42000: Variable 'innodb_adaptive_flushing' can't be set to the value of 'AUTO' 89SET @@global.innodb_adaptive_flushing = @start_global_value; 90SELECT @@global.innodb_adaptive_flushing; 91@@global.innodb_adaptive_flushing 921 93