Microsoft KB Archive/820782

= Using one SQL database for all applications for SQL Server session state may cause a bottleneck =

Article ID: 820782

Article Last Modified on 10/25/2005

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APPLIES TO


 * Microsoft .NET Framework 1.0
 * Microsoft ASP.NET 1.0
 * Microsoft Visual Studio .NET 2002 Enterprise Architect
 * Microsoft Visual Studio .NET 2002 Enterprise Architect
 * Microsoft Visual Studio .NET 2002 Enterprise Developer

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For a Microsoft .NET Framework 1.1 version of this article, see 836680.



SYMPTOMS
You can use Microsoft SQL Server version 7.0 or later to maintain session state in ASP.NET. For more information about how to configure SQL Server session state in ASP.NET, see the &quot;References&quot; section of this article.

SQL Server session state provides a longer and scalable use of session state in ASP.NET. However, it uses the same SQL Server database for all applications that are in the same ASPNET process. This behavior may create a single point of failure or may create a bottleneck.



CAUSE
By design, all ASP.NET applications use the same database to store data when they use SQL Server session state. You cannot specify a database name for each application. However, after you apply this hotfix, you can include the database name in the SQL connection string of a configuration file in the sessionstate section.



RESOLUTION
If SQL Server session state is currently configured, remove it by using the original UninstallSqlState.sql script before you install this fix. For more information, see the &quot;References&quot; section of this article.

The hotfix will install new InstallSqlStateTemplate.sql and UninstallSqlStateTemplate.sql files. Make a copy of these files for each Session database that you want to create. Modify each respective file by following the instructions that appear in the &quot;More Information&quot; section of this article.

Note These instructions are also included in the comment section of the InstallSqlStateTemplate.sql file.

After you have completed the modifications, run the InstallSqlStateTemplate.sql file to install SQL Server session state for a specified database. After you configure the Session database, modify the Web.config sessionstate section to reference a specific database for the session state, as in the following example:

Note In the following sample code, you must change user id=  and password=  to the correct values. Make sure that the user ID has the appropriate permissions to perform this operation on the database.  Note The sqlConnectionString now contains a parameter for database. In this example,  is the database that you specify for the session state.

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next .NET Framework 1.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version       Size       File name -  22-Sep-2003  19:32  1.0.3705.459    200,704  Aspnet_isapi.dll 22-Sep-2003 19:26                    4,169  Aspnet_perf.h   22-Sep-2003  19:33                  513,302  Aspnet_perf.ini 22-Sep-2003 19:33                  510,714  Aspnet_perf2.ini 22-Sep-2003 19:32  1.0.3705.459     24,576  Aspnet_regiis.exe 22-Sep-2003 19:33  1.0.3705.459     28,672  Aspnet_wp.exe 22-Sep-2003 18:46  1.0.3705.459     69,632  Corperfmonext.dll 17-Jun-2003 22:43                   16,597  Installpersistsqlstate.sql 17-Jun-2003 22:43                   17,331  Installsqlstate.sql 09-Sep-2003 01:28                   17,807  Installsqlstatetemplate.sql 22-Sep-2003 18:44  1.0.3705.459    303,104  Mscorjit.dll 23-Sep-2003 21:34  1.0.3705.459  1,953,792  Mscorlib.dll 22-Sep-2003 18:37                   10,284  Mscorlib.ldo 22-Sep-2003 18:45  1.0.3705.459  2,273,280  Mscorsvr.dll 22-Sep-2003 18:45  1.0.3705.459  2,269,184  Mscorwks.dll 22-Sep-2003 19:30  1.0.3705.459     20,480  Perfcounter.dll 23-Aug-2002 03:23                       15  Smartnav.htm 30-Jul-2003 01:04                    8,728  Smartnav.js   23-Sep-2003  21:33  1.0.3705.459  1,175,552  System.dll 23-Sep-2003 21:32  1.0.3705.459    241,664  System.messaging.dll 23-Sep-2003 21:32  1.0.3705.459    311,296  System.runtime.remoting.dll 23-Sep-2003 21:31  1.0.3705.459    131,072  System.runtime.serialization.formatters.soap.dll 23-Sep-2003 21:34  1.0.3705.459  1,196,032  System.web.dll 23-Sep-2003 21:32  1.0.3705.459    507,904  System.web.services.dll 23-Sep-2003 21:34  1.0.3705.459  1,302,528  System.xml.dll 23-Sep-2003 21:30  1.0.3705.459     32,768  Tlbimp.exe 17-Jun-2003 22:43                    1,419  Uninstallpersistsqlstate.sql 09-Sep-2003 01:28                    2,119  Uninstallsqlstatetemplate.sql 23-Sep-2003 21:30  1.0.3705.459     65,536  Wsdl.exe



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



Use the templates files to install the ASP.NET session state SQL objects
Use the templates files to install the ASP.NET session state SQL objects on a database other than the default ASPState database. To do this, follow these steps:
 * 1) Create your own script files by coping the two template files.
 * 2) Create a name for your database (such as MyASPStateDB).
 * 3) In your own script files, replace all occurrences of   with the name of your database.
 * 4) Install and remove ASP.NET session state SQL objects by using your own script files.

