Microsoft KB Archive/130274

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FIX: DBMSSOC3 Prevents Multiple Connections Across App

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Q130274

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The information in this article applies to:


 * Microsoft SQL Server version 4.2x

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BUG# NT: 10456 (4.21)

SYMPTOMS
Multiple applications running on the same Windows 3.1 computer cannot make connections to a SQL Server using DBMSSOC3.DLL version 4.21.0.5 (shipped with SQL Server version 4.21a for Windows NT). If one application has an open connection, and another application attempts to open a connection, the following message is returned to the second application:

Msg. No.: 10004 Severity: 9 State: 0 Error: Unable to connect: SQL

Server is unavailable or does not exist. Specified SQL server not

found. OS Error: 11 ConnectionOpen(WSASetBlockingHook(install)).

However, multiple connections can be open within a single application.

WORKAROUND
This problem only occurs in DBMSSOC3.DLL version 4.21.0.5. The use of version 4.21.0.4 of this DLL or of a different network library, such as named pipes, will not exhibit this behavior.

STATUS
Microsoft has confirmed this to be a problem in SQL Server DBMSSOC3.DLL network library version 4.21.0.5. This problem was corrected in SQL Server DBMSSOC3.DLL network library version 6.00. For more information, contact your primary support provider.

Additional query words: DBMSSOC3 Windows NT

Keywords : kbother

Issue type : kbbug

Technology : kbSQLServSearch kbAudDeveloper kbSQLServ420OS2