Modify database user name--cmd environment execution is valid

--cmd Environment Execution valid --Modify database user name select * from user$ where name= 'aa'; Update user$ set name= 'bb' WHERE name = 'aa'; --commit; The user name changes after the data dictionary information needs to be clearly cached.    Sql> alter system checkpoint;  ----Force write to the data file System altered.  Sql> alter system flush Shared_pool; ----clearly cache the data dictionary information, forcing Oracle to read the actual data (that is, the changed data) System altered.

Modify database user name--cmd environment execution is valid