ORA-00056: DDL lock on object 'string.string' is already held in an incompatible mode
What triggered the Error:
An attempt was made to acquire a DDL lock that is already locked.What should we do to fix it:
This happens if you attempt to drop a table that has parse locks on it.
If this was not sufficient go over to:
Oracle Official Support Knowledge Center
Or maybe those geeks at: StackOverflow Board
Or maybe those geeks at: StackOverflow Board