Oracle : Ошибка ORA-18003

"an outline already exists with this signature"
*Cause: 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.
*Action: 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.

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