Oracle Solution for Error ora-18003

ORA-18003: an outline already exists with this signature

What triggered the Error:

The signature generation algorithm generates signatures that are are 16 bytes in length so it is highly unlikely that any 2 signatures will be identical. This message is raised in such a rare case.

What should we do to fix it:

Either re-issue the statement that led to the outline being created with some whitespace added or force the outline to be created in a different category.