ORA-39159: cannot call this function from a non-Data Pump process

ORA-39159
ORA-39159: cannot call this function from a non-Data Pump process
Cause: Called a Data Pump process model function from a process which is not a
Data Pump process.
Action: Refer to any other error messages for additional information. 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.
More details : Viste http://www.high-oracle/ora-39159/
More details : Viste http://www.high-oracle/ora-39159/
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