ORA-31676: illegal value for number of workers, string
Cause: Called create worker processes with an illegal number of workers specified
Action: Make sure that the number of workers value is greater than 0 and less than the maximum value for the platform (normally 32767). If this error occurs from a Data Pump client (e.g. expdp or impdp) and you specified the parallel parameter, try the operation again with a smaller value for the parallel parameter. If the error occurs again, contact Oracle Customer Support and report the error
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