ORA-00997: illegal use of LONG datatype

Error Description
Whenever you try to do some illegal operations of LONG datatype it fails with error ORA-00997: illegal use of LONG datatype.
SQL> alter table a move ;
alter table a move
*
ERROR at line 1:
ORA-00997: illegal use of LONG datatype

Cause of the Problem
The usage of LONG datatype has several restrictions. One of the restriction is, if a table contain long datatype column then it can't be used to move by using ALTER TABLE.

Solution of the Problem
Don't use any LONG datatype in any table. If you have LONG datatype you must convert it to either BLOB/CLOB datatype using TO_LOB function.