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Events might be incorrectly logged for an MLLP-based message in BizTalk Accelerator for HL7 on a computer that is running Microsoft BizTalk Server 2009 or Microsoft BizTalk Server 2010

SYMPTOMS
Consider the following scenario:
  • You install Microsoft BizTalk Accelerator for HL7 (BTAHL7) on a computer that is running Microsoft BizTalk Server 2009 or Microsoft BizTalk Server 2010.
  • You create a receive location that uses Minimal Lower Layer Protocol (MLLP) adapter to receive messages.
In this scenario, the following events might be logged in the Application log even though the incoming messages are processed correctly.
Event 1

Event Type: ErrorEvent
Source: BizTalk Accelerator for HL7Event
Category: None
Event ID: 4097
Description:Fatal error encountered in 2XDasm. Exception information is Cannot access a disposed object.Object name: 'CEventingReadStream'.


Event 2

Event Type: Error
Event Source: BizTalk Server 2009
Event Category: (1)
Event ID: 5719
Description:
There was a failure executing the receive pipeline: "BTAHL72XPipelines.BTAHL72XReceivePipeline, BTAHL72XPipelines, Version=1.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Source: "BTAHL7 2.X Disassembler" Receive Port: "<receive port name>" URI: "<URI>" Reason: Cannot access a disposed object.
Object name: 'CEventingReadStream'.


Event 3

Event Type: Error
Event Source: BizTalk Server 2009
Event Category: (1)
Event ID: 5673
Description:
The Messaging Engine received an error from transport adapter "MLLP" when notifying the adapter with the BatchComplete event. Reason "Object reference not set to an instance of an object."

Note If you are using BizTalk Server 2010, the Event Source is "BizTalk Server 2010."
CAUSE
This issue occurs because the message sender that establishes a connection with BizTalk Server 2009 sends a blank message.
RESOLUTION

For BizTalk Server 2009

Hotfix information

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 website: 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.

Prerequisites

To apply this hotfix, you must have BizTalk 2009 Accelerator for HL7 (BTAHL7) installed. Additionally, you must have the following hotfixes installed before you apply this hotfix:

970492 FIX: A BizTalk host instance consumes lots of memory and processes messages very slowly when BizTalk Server 2009 receives lots of HL7 messages
973909 FIX: Event IDs 5812, 5743, and 5754 are logged when you use BizTalk 2009 Accelerator for HL7 (BTAHL7)
981442 FIX: Error message "Unable to write data to the transport connection" when you use BizTalk 2009 Accelerator for HL7 in BizTalk Server 2009

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 item in Control Panel.
For all supported versions of BizTalk Server 2009
File nameFile versionFile sizeDateTimePlatform
Microsoft.solutions.btahl7.mllp.dll3.7.513.2108,41612-Nov-201010:19x86

For BizTalk Server 2010

The fix that resolves this issue in BizTalk Server 2010 is described in KB 2564013. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2564013 FIX: A hotfix is available that provides additional Delivery Mode properties for the Minimal Lower Layer Protocol send and receive adapters in BizTalk Accelerator for HL7 in a BizTalk Server 2010 environment
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
REFERENCES
For more information about BTAHL7 Help, visit the following Microsoft Developer Network (MSDN) website:

For more information about BizTalk Server hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
2003907 Information on BizTalk Server hotfixes
Properties

Article ID: 2454887 - Last Review: 11/01/2011 07:42:00 - Revision: 3.0

  • Microsoft BizTalk Server 2009 Branch
  • Microsoft BizTalk Server 2009 Developer
  • Microsoft BizTalk Server 2009 Enterprise
  • Microsoft BizTalk Server 2009 Standard
  • Microsoft BizTalk 2009 Accelerator for HL7 Enterprise
  • Microsoft BizTalk 2009 Accelerator for HL7 Standard
  • Microsoft BizTalk Server Branch 2010
  • Microsoft BizTalk Server Developer 2010
  • Microsoft BizTalk Server Enterprise 2010
  • Microsoft BizTalk Server Standard 2010
  • kbbtsaccelerators kbbiztalk2009presp1fix kbautohotfix kbqfe kbfix kbhotfixserver kbexpertiseadvanced kbsurveynew KB2454887
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