mysql root permission to update information_schema error

Question

when i try to update one table(GLOBAL_VARIABLES) from information_schema db,

i get an error :

Access denied for user \'root\'@\'localhost\' to databa         


        

Answer 1

You can change the global variables using SET, and read them using SHOW.

See http://dev.mysql.com/doc/refman/5.0/en/using-system-variables.html for more info