The following errors appear when running impdp operation which uses network link.
$ impdp imp_user/password@dbname directory=IMP_DIR logfile=imp_test.log tables=test network_link=DB_LINK
Import: Release 12.1.0.2.0 - Production on Fri Aug 27 14:44:25 2021
Copyright (c) 1982, 2014, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 12c EE Extreme Perf Release 12.1.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Advanced Analytics and Real Application Testing options
ORA-39006: internal error
ORA-39113: Unable to determine database version
ORA-06550: line 1, column 7:
PLS-00352: Unable to access another database 'DB_LINK'
ORA-06550: line 1, column 7:
PLS-00201: identifier 'SYS@DB_LINK' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
ORA-39097: Data Pump job encountered unexpected error -6550
CAUSE and SOLUTION
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