Hello Gurus, DBLINK is working for one particular user, were as it is not working for other users. Kindly help me to sort out the problem SQL> select name from v$database; NAME --------- A SQL> show user USER is "zing" SQL> select * from dual@xxxxxxxxxxxxx; D - X where as if i select as sys or any other user i am getting below error SQL> connect / as sysdba Connected. SQL> select * from dual@xxxxxxxxxxxxx; select * from dual@xxxxxxxxxxxxx * ERROR at line 1: ORA-01017: invalid username/password; logon denied ORA-02063: preceding line from B -Naga