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SQL State: 28000; SQL Code: 18456 -error while connecting to SQL Server 200

143430Mar 19 2007 — edited Nov 9 2009
I have set up everything according to what I think to be good instructions yet I still get this error.
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ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[Generic Connectivity Using ODBC][Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user 'BTEST'. (SQL State: 28000; SQL Code: 18456)
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I have tried the odbc connection and it works. It seems that Oracle is not sending the proper connection information like passwork.

anyone, any thoughts?

Much appreciated,
Ara

Comments

Sdhamoth-Oracle

Hi,

Did you set TNS_ADMIN environment variable? If not, can you try after setting it?

Thanks,

Senthil

TheVenkster

Senthil:

What should it point to?

Anyway, I re-installed both the 64-bit Oracle DB and the 32-bit client. There are two sets of TNSNames.Ora, Listener.Ora and SQLNet.ora, one for the 64-bit and one for the 32-bit in their respective folders.

I have no problem creating an ODBC DSN for the 64-bit version. The link connects fine to the DB

I have two TNS Listeners defined, one for the 64-bit and one for the 32-bit. While the 64-bit uses Port 1521, I am using Port 1522 for the 32-bit; I also made sure that Listener.ora refers to the same port. But when I use Oracle Net Configuration Assistant to configure Local Net Service Name Configuration to test the Service, it says "TNS:listener does not currently know of the service requested in connect descriptor.

I did check that both the TNS Listener services are running.

venki

TheVenkster

Senthil:

I don't know what happened but now, everything works just as expected. I am able to attach Oracle DB tables to an Access database using ODBC. I am able to also connect to the DB using the 64-bit drivers.

Venki

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Locked on Dec 7 2009
Added on Mar 19 2007
#heterogeneous-connectivity
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