Error while drop user

[bhattnirav]

When i have tried to drop ACC user i got fllowing error

SQL>DROP USER ACC CACSADE;

drop user acc
*
ERROR at line 1:
ORA-01001: invalid cursor
ORA-00600: internal error code, arguments: [qmxiUnpPacked2], [121], [], [], [],
[], [], []



After getting this error i have checked than there is no object in ACC user.