Oracle export problem

Posted by Abhiram on Stack Overflow See other posts from Stack Overflow or by Abhiram
Published on 2010-03-26T09:49:32Z Indexed on 2010/03/26 9:53 UTC
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oracle10g

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database

I use exp username/password@servername owner={ownername} file=backuppath;

The parameters given are correct but still not able to connect

Below is the error trace:

EXP-00056: ORACLE error 12545 encountered
ORA-12545: Connect failed because target host or object does not exist
EXP-00000: Export terminated unsuccessfully

What can be the possible reasons?

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