"Process name buffer size must be specified and must be greater than 0."
*Cause: Called get worker exception and either specified NULL or 0 for the
buffer size argument.
*Action: Be sure to specify a buffer size that is big enough to hold the
worker process name (e.g. 30 bytes). If this error occurs from a
Data Pump client (e.g. expdp or impdp), try the operation again. If
the error occurs again, contact Oracle Customer Support and report