Re: TNS-12571 and Mcafee Virus Scan 7

From: Paul Drake <drak0nian_at_yahoo.com>
Date: 22 May 2003 10:36:42 -0700
Message-ID: <1ac7c7b3.0305220936.4dfdf3a8@posting.google.com>

Hans Forbrich <forbrich_at_telusplanet.net> wrote in message news:<3ECCCFC9.F7743861_at_telusplanet.net>...
> Jim Thompson wrote:
>
> > I have Windows 2000 box with Oracle 8.1.5, I installed Mcafee Virus Scan 7 and
> > it created TNS-12571 errors. I tried many things, but finally had to uninstall
> > the product.
> >
> > Seems unfortunate that networking on Windows is still so fragile.
>
> Quite interesting - Packet Writer failures due to McAfee?
>
> Did you happen to ask them? Makes me wonder if they doing something to the TCP/IP
> port such as periodically checking for virus updates?
>
> Did you try moving the Listener to another port, away from 1521?

Hans,

I seriously doubt as to whether this has anything to do with the listener.
He's running locally (on a laptop) - and does not even need a listener to be up to connect to the instance - bequeath would work just fine. Also, a TNS-12571 error would indicate that he had already connected successfully, but that the connection (that was established) was severed. If he is using a dedicated server connection, not a shared server, then the listener (if used) would have only been involved at connect-time, and not at all after that.

Severed connections tend to not produce much in the way of useful trace.
The more information the OP provides, the less assumptions that we'd have to make.

http://download-west.oracle.com/docs/cd/A87860_01/doc/server.817/a76999/tnsus.htm#1002483

TNS-12571 TNS:packet writer failure

Cause: An error occurred during a data send. This message is not normally visible to the user.

Action: For further details, turn on tracing and re-execute the operation. If the error persists, contact Oracle Customer Support.

Paul Received on Thu May 22 2003 - 12:36:42 CDT