Unknown token received from SQL Server

SELECT * FROM IAS_Users

Display Following Message:

[Microsoft][ODBC SQL Server Driver]Unknown token received from SQL Server
[Microsoft][ODBC SQL Server Driver]Invalid cursor state
[Microsoft][ODBC SQL Server Driver]Unknown token received from SQL Server
[Microsoft][ODBC SQL Server Driver]Protocol error in TDS stream

Reply:
[posted and mailed, please reply in news]

Greg M. (gmalanoski@insightbb.com) writes:[color=blue]

> I have a client using SQL 2k, SP2 (due application requirements, SP3 is

> not an option - the application vendor will not specify why). We are

> receiving:

>

> [Microsoft][ODBC SQL Server Driver]Unknown token received from SQL Server

>

> Connection Broken

>

> There doesn't appear to be any rhyme or reason as to why this is

> happening. And...it shows it's ugly head at random places during

> execution. Has anyone experienced this also, or have any ideas on what

> to look for? I have seen numerous suggestions stating to upgrade from

> MDAC 2.6 to 2.7. At this point, I'm not sure if thats an option based

> on the vendors application (which by the way they no longer support!).[/color]

The message itself indicates a protocol violation. That is, SQL Server

sends something which is not to be expected according to the TDS protocol

that server and client communicate over.

However, in many cases, the message just indicates that the process for

the connection inside SQL Server went belly-up, because of an access

violation, stack overflow or similar bad thing. In this case, you will

find a stack dump in the SQL Server errorlog. Possibly you can then connect

the dump to a certain statement.

But if it is random as you say, then the errorlog may not make you

any wiser. In such case, the best would be to open a case with Microsoft.

Since some sort of bug appears to be involved here, you should get

any initial expenses refunded.

--

Erland Sommarskog, SQL Server MVP, sommar@algonet.se

Books Online for SQL Server SP3 at

http://www.microsoft.com/sql/techin.../2000/books.asp