Re: Cannot access a database - TNS 12547 lost contact

From: Andre van Winssen $andrew$ <andrew-no-spam-svp_at_info.nl>
Date: Wed, 6 Mar 2002 15:56:09 +0100
Message-ID: <3c862e09$0$234$4d4ebb8e@news.nl.uu.net>

>> nttvlser: valid node check on incoming node 141.29.240.142
>> nttvlser: Denied Entry: 141.29.240.142
means that your database server has valid node checking enabled. Look for a file PROTOCOL.ORA on %oracle_home%\network\admin. It probably has entries like:

tcp.validnode_checking = YES
tcp.excluded_nodes = 141.29.240.142

Regards,
Andre van Winssen

"Roberto Campo" <rcampo_at_libero.it> wrote in message news:70103998.0203060302.7e291fb7_at_posting.google.com...
> Hi everybody,
> I'm trying to access a database server and I get the error TNS 12547
> as soon as I try a tnsping to the machine.
> I activated the trace on the listener side and I get this kind of
> messages:
>
> [...]
> nttcnr: waiting to accept a connection.
> nttvlser: entry
> nttvlser: valid node check on incoming node 141.29.240.142
> nttvlser: Denied Entry: 141.29.240.142
> nttcon: exit
> nserror: nsres: id=0, op=65, ns=12546, ns2=12560; nt[0]=516, nt[1]=0,
> nt[2]=0
> nsopen: unable to open transport
> [...]
>
> May anyone tell me what "nttvlser" is and which kind of check is doing
> on my IP address?
> RDBMS is ORACLE 8.0.5.2.1, OS is Windows NT 4.0
> Thank you,
> roberto
Received on Wed Mar 06 2002 - 08:56:09 CST