January 22, 2010

How to resolve “[nQSError: 12002] Socket communication error at call=: (Number=-1) Unknown”

Filed under: config, obiee, security, unix, windows — rmoff @ 12:37

This error caught me out today. I was building a Linux VM to do some work on, and for the life of me couldn’t get the OBIEE Admin Tool to connect to the BI Server on the VM.

The error I got when trying to define a DSN on the Windows box was:

[nQSError: 12008] Unable to connect to port 9703 on machine
[nQSError: 12010] Communication error connecting to remote end point: address =; port = 9703.
[nQSError: 12002] Socket communication error at call=: (Number=-1) Unknown

This error means that the ODBC Driver for BI Server can’t communicate with the BI Server on port 9703.
99% of the time this question comes up on the forums it’s because the BI Server isn’t running, or the host is incorrect.

I validated the BI Server was running and listening on port 9703:

[oracle@RNMVM03 setup]$ netstat -a|grep 9703
tcp        0      0 *:9703                      *:*                         LISTEN

And I fired up Presentation Services and OC4J and successfully logged into Answers. So why couldn’t my Windows box connect?

I tried telnetting from my Windows box to the VM on port 9704 – the OC4J port. This worked, as did pinging it. So the network connectivity between the two was there. If I telnetted to port 9703 (BI Server) there was an eventual timeout.

The answer to the problem was that my Linux VM (OEL5.4) was running a firewall which I’d cleverly allowed 9704 on but not 9703. Disabling the firewall fixed the problem.



  1. Hi, I am facing the same problem, I can not connect to the host:port from my Windows machine to the Linux VirtualBox machine. How did you disable the firewall?. When I type “telnet” it also doesn’t work on the DOS Console of Windows

    Comment by Clara — May 28, 2011 @ 22:46

    • Hi,
      I don’t know which Linux you’re running – I suggest you just google for linux firewall disable, you’ll find many pages telling you how to do it.

      Comment by rnm1978 — May 30, 2011 @ 08:28

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