"unable to get count of total workers alive"
*Cause: Attempt to get count of total worker processes alive failed.
*Action: Check the additional error messages to see what caused the failure.
Correct the error, if possible, and try the operation again. 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 the error.