Have a look at Oracle Metalink
OBIEE 11g: Error: "A fatal error occurred while processing the request. The server responded with: java.io.IOException: The system cannot find the path specified." when Downloading a Briefing Book in PDF Format (Doc ID 1513538.1)
let us know if in case of more issues.
it is asking to provide support Identifier. Is there a way I can get the direct link to that DOC ID.
To access My Oracle Support Doc IDs, you need a valid support contract with Oracle. If you have one, then you can register on support.oracle.com to set up an account and provide your CSI (Customer Support Identifier) that you get when you have a valid support contract.