1SET @start_global_value = @@global.innodb_log_checkpoint_now; 2SELECT @start_global_value; 3@start_global_value 40 5select @@global.innodb_log_checkpoint_now in (0, 1); 6@@global.innodb_log_checkpoint_now in (0, 1) 71 8select @@global.innodb_log_checkpoint_now; 9@@global.innodb_log_checkpoint_now 100 11select @@session.innodb_log_checkpoint_now; 12ERROR HY000: Variable 'innodb_log_checkpoint_now' is a GLOBAL variable 13show global variables like 'innodb_log_checkpoint_now'; 14Variable_name Value 15innodb_log_checkpoint_now OFF 16show session variables like 'innodb_log_checkpoint_now'; 17Variable_name Value 18innodb_log_checkpoint_now OFF 19select * from information_schema.global_variables where variable_name='innodb_log_checkpoint_now'; 20VARIABLE_NAME VARIABLE_VALUE 21INNODB_LOG_CHECKPOINT_NOW OFF 22select * from information_schema.session_variables where variable_name='innodb_log_checkpoint_now'; 23VARIABLE_NAME VARIABLE_VALUE 24INNODB_LOG_CHECKPOINT_NOW OFF 25set global innodb_log_checkpoint_now=1; 26select @@global.innodb_log_checkpoint_now; 27@@global.innodb_log_checkpoint_now 280 29select * from information_schema.global_variables where variable_name='innodb_log_checkpoint_now'; 30VARIABLE_NAME VARIABLE_VALUE 31INNODB_LOG_CHECKPOINT_NOW OFF 32select * from information_schema.session_variables where variable_name='innodb_log_checkpoint_now'; 33VARIABLE_NAME VARIABLE_VALUE 34INNODB_LOG_CHECKPOINT_NOW OFF 35set @@global.innodb_log_checkpoint_now=0; 36select @@global.innodb_log_checkpoint_now; 37@@global.innodb_log_checkpoint_now 380 39select * from information_schema.global_variables where variable_name='innodb_log_checkpoint_now'; 40VARIABLE_NAME VARIABLE_VALUE 41INNODB_LOG_CHECKPOINT_NOW OFF 42select * from information_schema.session_variables where variable_name='innodb_log_checkpoint_now'; 43VARIABLE_NAME VARIABLE_VALUE 44INNODB_LOG_CHECKPOINT_NOW OFF 45set global innodb_log_checkpoint_now=ON; 46select @@global.innodb_log_checkpoint_now; 47@@global.innodb_log_checkpoint_now 480 49select * from information_schema.global_variables where variable_name='innodb_log_checkpoint_now'; 50VARIABLE_NAME VARIABLE_VALUE 51INNODB_LOG_CHECKPOINT_NOW OFF 52select * from information_schema.session_variables where variable_name='innodb_log_checkpoint_now'; 53VARIABLE_NAME VARIABLE_VALUE 54INNODB_LOG_CHECKPOINT_NOW OFF 55set global innodb_log_checkpoint_now=OFF; 56select @@global.innodb_log_checkpoint_now; 57@@global.innodb_log_checkpoint_now 580 59select * from information_schema.global_variables where variable_name='innodb_log_checkpoint_now'; 60VARIABLE_NAME VARIABLE_VALUE 61INNODB_LOG_CHECKPOINT_NOW OFF 62select * from information_schema.session_variables where variable_name='innodb_log_checkpoint_now'; 63VARIABLE_NAME VARIABLE_VALUE 64INNODB_LOG_CHECKPOINT_NOW OFF 65set session innodb_log_checkpoint_now='some'; 66ERROR HY000: Variable 'innodb_log_checkpoint_now' is a GLOBAL variable and should be set with SET GLOBAL 67set @@session.innodb_log_checkpoint_now='some'; 68ERROR HY000: Variable 'innodb_log_checkpoint_now' is a GLOBAL variable and should be set with SET GLOBAL 69set global innodb_log_checkpoint_now=1.1; 70ERROR 42000: Incorrect argument type to variable 'innodb_log_checkpoint_now' 71set global innodb_log_checkpoint_now='foo'; 72ERROR 42000: Variable 'innodb_log_checkpoint_now' can't be set to the value of 'foo' 73set global innodb_log_checkpoint_now=-2; 74ERROR 42000: Variable 'innodb_log_checkpoint_now' can't be set to the value of '-2' 75set global innodb_log_checkpoint_now=1e1; 76ERROR 42000: Incorrect argument type to variable 'innodb_log_checkpoint_now' 77SET @@global.innodb_log_checkpoint_now = @start_global_value; 78SELECT @@global.innodb_log_checkpoint_now; 79@@global.innodb_log_checkpoint_now 800 81