ORA-31610: cannot call this function from

admin

ORA-31610: cannot call this function from a non-master process
Cause: Called a Data Pumpprocess model function from a process which is not a
master process.
Action: Create a masterprocess first. Then call the function from the master
process. 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.