salam
can i ask how metalink can help
??
i have a user name
thank u

Look you first go to this link
http://metalink.oracle.com
and in press login to meta link
and you will asked about your username and password

you can write error nu and search about solving problem
or search any other criteria

It's a powerful portal for supporting Oracle Products,you will find every thing about Oracle Apps and DB .It include khnowledge base documents (Notes,How To,Problems,Bugs ...) and it have the latest patches for the appplications.Also from metalink you can open Service Request with Oracle if you face any problem with any product.

Regards,
Online