1select @@global.large_files_support; 2@@global.large_files_support 31 4select @@session.large_files_support; 5ERROR HY000: Variable 'large_files_support' is a GLOBAL variable 6show global variables like 'large_files_support'; 7Variable_name Value 8large_files_support ON 9show session variables like 'large_files_support'; 10Variable_name Value 11large_files_support ON 12select * from information_schema.global_variables where variable_name='large_files_support'; 13VARIABLE_NAME VARIABLE_VALUE 14LARGE_FILES_SUPPORT ON 15select * from information_schema.session_variables where variable_name='large_files_support'; 16VARIABLE_NAME VARIABLE_VALUE 17LARGE_FILES_SUPPORT ON 18set global large_files_support=1; 19ERROR HY000: Variable 'large_files_support' is a read only variable 20set session large_files_support=1; 21ERROR HY000: Variable 'large_files_support' is a read only variable 22