FIX: The Concurrent Connections property does not manage connections to an SAP system as expected in the BizTalk Adapter 2.0 for mySAP Business Suite (912015)

SYMPTOMS

In Microsoft BizTalk Adapter 2.0 for mySAP Business Suite, the Concurrent Connections property does not manage connections to an SAP system as expected.

When you configure the Concurrent Connections property for a send port that has a value of 0, you may experience one or more of the following symptoms:

The BizTalk Adapter 2.0 for mySAP Business Suite tries to open multiple connections to the SAP system.
When the number of connections exceeds the maximum number of connections that the SAP system allows, the BizTalk Adapter 2.0 for mySAP Business Suite logs an error message.
The BizTalk Adapter 2.0 for mySAP Business Suite continues to try to open multiple connections with the SAP system after the error message is logged.

When you configure the Concurrent Connections property for a send port that has a value larger than 0, the BizTalk Adapter 2.0 for mySAP Business Suite successfully sends a limited number of IDOCs to the SAP system before the BizTalk Adapter 2.0 for mySAP Business Suite stops responding. The number of IDOCs that the BizTalk Adapter 2.0 for mySAP Business Suite sends to the SAP system is approximately the same as the value of the Concurrent Connections property.

When the BizTalk Adapter 2.0 for mySAP Business Suite stops responding, all unsent messages are suspended. You must restart the server that is running Microsoft BizTalk Server 2004 to continue to process messages.

RESOLUTION

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, we recommend that you wait for the next BizTalk Adapter 2.0 for mySAP Business Suite 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.

Prerequisites

You must have the Microsoft BizTalk Adapter 2.0 for mySAP Business Suite installed to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The 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 tool in Control Panel.

File name	File version	File size	Date	Time
Sapadaptermanagement.dll	2.0.343.0	547,552	05-Dec-2005	22:40
Saptransmitter.dll	2.0.343.0	84,688	05-Dec-2005	22:40

Note Because of file dependencies, the most recent hotfix that contains these files may contain additional files.

MORE INFORMATION

After you apply this hotfix, the Concurrent Connections property manages connections to the SAP system as follows:

When the value of the Concurrent Connections property is 0, the BizTalk Adapter 2.0 for mySAP Business Suite opens and closes connections to the SAP system as needed until the limit that is configured on the SAP system is reached. After the limit that is configured on the SAP system is reached, the BizTalk Adapter 2.0 for mySAP Business Suite will open a new connection when an existing connection is released.
When the value for the Concurrent Connections property is larger than 0, the BizTalk Adapter 2.0 for mySAP Business Suite opens and closes connections to the SAP system as needed until the value that is configured in the Concurrent Connections property is reached. After the limit that is configured in the Concurrent Connections property is reached, the BizTalk Adapter 2.0 for mySAP Business Suite will open a new connection when an existing connection is released.

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates