ORA-00056: DDL lock on object string.string is already held in an incompatible mode
Cause: An attempt was made to acquire a DDL lock that is already locked.
Action: This happens if you attempt to drop a table that has parse locks on it.
Cause: An attempt was made to acquire a DDL lock that is already locked.
Action: This happens if you attempt to drop a table that has parse locks on it.
