ORA-39200: Link name "string" is invalid.

ORA-39200
ORA-39200: Link name "string" is invalid.
Cause: The name of the network link supplied for a Data Pump job was not
usable. Secondary messages identify the problem.
Action: Rerun the job using a valid network link.
More details : Viste http://www.high-oracle/ora-39200/
More details : Viste http://www.high-oracle/ora-39200/
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Your source for help on all Oracle database error codes :
------------------------
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ORA-07599: spwat: $SCHDWK failure
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ORA-02349: invalid user-defined type - type is incomplete
ORA-06504: PL/SQL: Return types of Result Set variables or query do not
ORA-10794: Logical Standby trace event
ORA-30034: Undo tablespace cannot be specified as temporary tablespace
ORA-02778: Name given for the log directory is invalid
ORA-12036: updatable materialized view log is not empty, refresh
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Error Oracle : ora-02048 http://www.high-oracle.com/ora-02048/
Error Oracle : ora-38707 http://www.high-oracle.com/ora-38707/
Error Oracle : ora-29357 http://www.high-oracle.com/ora-29357/
Error Oracle : ora-04050 http://www.high-oracle.com/ora-04050/
Error Oracle : ora-01259 http://www.high-oracle.com/ora-01259/
Error Oracle : ora-12231 http://www.high-oracle.com/ora-12231/
Error Oracle : ora-16738 http://www.high-oracle.com/ora-16738/
Error Oracle : ora-07750 http://www.high-oracle.com/ora-07750/
Error Oracle : ora-06144 http://www.high-oracle.com/ora-06144/
Error Oracle : ora-26023 http://www.high-oracle.com/ora-26023/
Error Oracle : ora-22152 http://www.high-oracle.com/ora-22152/
Error Oracle : ora-27159 http://www.high-oracle.com/ora-27159/
Error Oracle : ora-29308 http://www.high-oracle.com/ora-29308/
Error Oracle : ora-32128 http://www.high-oracle.com/ora-32128/
Error Oracle : ora-01818 http://www.high-oracle.com/ora-01818/
Error Oracle : ora-29658 http://www.high-oracle.com/ora-29658/
Error Oracle : ora-22613 http://www.high-oracle.com/ora-22613/
Error Oracle : ora-23342 http://www.high-oracle.com/ora-23342/
Error Oracle : ora-01617 http://www.high-oracle.com/ora-01617/
Error Oracle : ora-29956 http://www.high-oracle.com/ora-29956/
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