I encountered a strange error which I spent almost a full day trying to resolve, so I thought I would save others time in the future by sharing my findings.

The Problem : We have setup functionality to allow URL based actions on a few reports. These are triggered through a dropdown (view selector) which displays an extra column from where the comment can be triggered.

In the development environment, these worked fine. However, in the test and production environments, these would randomly pop-up errors saying object not found, or log users out of the Oracle BI system.

The Evidence: On looking through the logs, I was able to identify that the log-off was happening because the BI Server and Presentation server were crashing. After the crash, the Cluster Controller would bring them back up. So to the users, this seemed like a simple logout.
The strange thing, however, was the error message in the log files. Even after setting logging to the Finest level (Turning on logging using EM), this is all I was able to see:

sawlog0.log

[2013-09-02T20:59:34.000+08:00] [OBIPS] [TRACE:1] [] [saw.rpc.server.handleConnection] [ecid: 00iGzlaCOWtFw0zoVS04rz6FX2i1jsmzi000TxK000005,0:27] [tid: 131496] Caught UnexpectedEOF. Probably, client shutting down.[[
File:socketrpcserver.cpp
Line:583
Location:
    saw.rpc.server.handleConnection
    saw.rpc.server.dispatch
    saw.threadpool.socketrpcserver
    saw.threads
ecid: 00iGzlaCOWtFw0zoVS04rz6FX2i1jsmzi000TxK000005,0:27
ThreadID: 131496
]]

nqserver.log

[2013-09-02T20:59:42.000+08:00] [OracleBIServerComponent] [ERROR:1] [] [] [ecid: 00iGzlYESXcFw0zoVS04rz6FX2i1jsmzi000TbO000000] [tid: 103dc]  [nQSError: 12002] Socket communication error at call=recv: (Number=10054) An existing connection was forcibly closed by the remote host.

The Fix: After investigating in detail all the differences between the Development and UAT / PROD environments, I finally realized that there was a difference in file paths. With iterative testing, I realized that the EOF exception in the SAW log was due to the file path being too long for the Windows filesystem to pass.

To fix this, I used the Microsoft mklink function to create a softlink for the catalog.

Before:

After:

That fixed the problem.

For reference, here are some more details about the environments this test case occurred in are:

OS: Windows Server 2008 R2 (with Service Pack 1)

Oracle Business Intelligence: 11.1.1.6.7 (Build 121219.1259 64-bit)

Hope this helps someone save time.