Article ID: 2504432 - View products that this article applies to.
In a Microsoft Host Integration Server 2009 or Microsoft Host Integration Server 2010 environment, you configure the Max Pool Size property to specify the maximum number of connections that can exist in the connection pool when connection pooling is enabled for the data source. In this scenario, the Connect Timeout property is not applied correctly when the connection should be available in the pool.
Note This issue only occurs when the system hits the value of the Max Pool Size property, and one connection is queued up.
For example, this problem may occur in the following scenario:
In this scenario, as the third connection is queued up, it should use the available connection out of the pool if the Connect Timeout property has not yet expired. However, in a Host Integration Server 2009 or Host Integration Server 2010 environment, when a queued connection is present, and another open connection is being closed, the third connection does not use the available connection until the connect time out expires. Additionally, you receive the following error message:
Failed to get connection from pool
Host Integration Server 2010A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:
http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
PrerequisitesYou must have Microsoft Host Integration Server 2010 installed to apply this hotfix.
Restart informationYou do not have to restart the computer after you apply this hotfix.
Replacement informationThis hotfix does not replace a previously released hotfix.
File informationThe English version of this hotfix has the file attributes (or later file attributes) 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 item in Control Panel.
For Microsoft Host Integration Server 2010, 32-bit Edition
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For Microsoft Host Integration Server 2010, 64-bit Edition
Note Because of file dependencies, the most recent fix that contains these files may also contain additional files.
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Host Integration Server 2009The hotfix that resolves this issue is included in cumulative update package 3 for Host Integration Server 2009.
For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/2667632/ )Cumulative update package 3 for Host Integration Server 2009
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.