Error : ORA-01017: invalid username/password; logon denied - Database Link SQL> select * from global_name@my_link; select * from global_name@my_link * ERROR at line 1: ORA-01017: invalid username/password; logon denied ORA-02063: preceding line from MY_LINK SQL> Above error may sometimes occur when accessing the target DB with newly created database link. If so,try connecting to the target database via SQLPlus using the tnsnames.ora entry: sqlplus pub@tnsname If the target db is 11g then password case sensitivity may be the issue. Solution: Place the password in double quotes when you create the database link and retry.
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