execute following Command
expdp scott/tiger@orcl schemas=EMPLOYEES directory=DB_BAK dumpfile=SCOTT.dmp logfile=expdpSCOTT.log
Getting this error when I execute above command for export Schemas
Export: Release 11.2.0.1.0 - Production on Wed Mar 12 12:16:05 2014
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UDE-12170: operation generated ORACLE error 12170
ORA-12170: TNS:Connect timeout occurred
Please help.