Microsoft KB Archive/183552

= SNA DDM Service Terminates; Type Mismatch Errors =

Article ID: 183552

Article Last Modified on 2/20/2004

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APPLIES TO


 * Microsoft OLE DB Provider for AS/400 and VSAM 1.0, when used with:
 * Microsoft SNA Server 4.0

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This article was previously published under Q183552



SYMPTOMS
When you are accessing a mainframe file, if the LU6.2 connection is terminated abruptly, the SNA DDM service terminates with an unhandled exception. Bad data can be written to the mainframe file; also, when the OLE DB Provider reads bad data from the mainframe, it crashes.



CAUSE
The mainframe deallocates the LU6.2 conversation with CONV_FAIL_ABEND. The OLE DB Provider, regardless, tries to interpret as application data the LU6.2 information returned from the mainframe. This results in an access violation.



STATUS
Microsoft has confirmed this to be a problem in Microsoft OLE DB Provider for AS/400 and VSAM version 1.00, included with SNA Server version 4.0.

This problem was corrected in the latest SNA Server version 4.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Keywords: kbbug kbfix KB183552

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