ORA-12494: cannot insert or delete a level, category, or release category
Cause: You attempted to insert or delete a level, category, or release category definition.
Action: If the label definition is no longer valid, change its name to one that identifies it as invalid. When any labels are converted to character strings, the new label definition will be used.
ORA-12495
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ORA-12494cannot insert or delete a level, category, or release category