You have a computer that is running Microsoft BizTalk Server 2006 with the Microsoft BizTalk Adapter 2.0 for mySAP Business Suite installed.
You configure a send port to send messages to an SAP server by using the BizTalk Adapter 2.0 for mySAP Business Suite.
You use the adapter to make SAP Business API (BAPI) calls by using an OPENREUSE connection.
Note For more information about the OPENREUSE connection, refer to the "More information" section.
After you open a connection by using an OPENREUSE connection and before you use a REUSECLOSECONNECTION value to send the next message to the SAP server by, you restart the BizTalk Server host instance.
In this scenario, messages that you intend to send over a reused connection are not sent. The corresponding orchestration instance is dehydrated and cannot be resumed. The messages remain active in the send port and cannot be sent to the SAP server.
Note When this problem occurs, no error message is raised, and no event is logged.
When the OPENREUSE option is used, BizTalk Server 2006 maintains an in-memory hash table that contains the cached (reusable) SAP connection objects. After you restart the BizTalk Server host instance, the hash table is lost and therefore a nullReferenceException exception occurs when the SAP send ports try to reuse the cached SAP connections. However, the exception is not handled by Microsoft BizTalk Adapter 2.0 for mySAP Business Suite.
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is 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 Web site:
Note 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.
You must have BizTalk Server 2006 and BizTalk Adapter 2.0 for mySAP Business Suite Service Pack 1 installed to apply this hotfix.
You do not have to restart the computer after you apply this hotfix. However, you must restart the BizTalk host instance service after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace other hotfixes.
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 item in Control Panel.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
To reuse connections when you connect to an SAP server by using the BizTalk Adapter 2.0 for mySAP Business Suite, you can specify a value in the ConnectionType property that is exposed in Microsoft.BizTalk.SAPAdapterProperties.dll.
For example, you can open a connection by specifying the ConnectionType property as OPENREUSE. You can reuse an open connection by specifying the property value as REUSEOPENCONNECTION. Also, you can reuse an open connection and close it by specifying the property as REUSECLOSECONNECTION. The REUSECLOSECONNECTION connection is typically used to commit or rollback a transaction.