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ORA-08447:

syntax error in USAGE clause in mask options
Cause: A syntax error was found in the USAGE clause in the mask options parameter passed to a UTL_PG conversion routine. Valid specifications are: USAGE DISPLAY USAGE COMP USAGE COMP-3 USAGE COMP-4 USAGE COMPUTATIONAL USAGE COMPUTATIONAL-3 USAGE COMPUTATIONAL-4 USAGE IS DISPLAY USAGE IS COMP USAGE IS COMP-3 USAGE IS COMP-4 USAGE IS COMPUTATIONAL USAGE IS COMPUTATIONAL-3 USAGE IS COMPUTATIONAL-4
Action: Correct the mask options parameter.