Dear Sir
When ever create backup by using expdp then i am facing below error and i am also created pluggable database of pdbprim2 in tnsnames.ora file and listener also started but getting same issue, kindly suggestion to me.
[oracle@prim ~]$ expdp \'sys\sys@pdbprim2 as sysdba\'tables=pdbuser.T1 directory=test_dir dumpfile=pdbuser_t1.dmp logfile=pdbuser_t1.log
Export: Release 19.0.0.0.0 - Production on Sat Jan 10 03:29:41 2026
Version 19.3.0.0.0
Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.
Password:
UDE-12514: operation generated ORACLE error 12514
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor