A CPI-C Application May Hang When Internal Tracing Is Enabled

• Microsoft SNA Server, versions 3.0, 3.0SP1, 3.0SP2, 3.0SP3, 3.0SP4, 4.0, 4.0SP1, 4.0SP2

SYMPTOMS

If client internal tracing is enabled using the SNA Server trace facility, a CPI-C application may stop responding (hang). This only happens if asynchronous verb completion is used in the application.

CAUSE

A CPI-C verb is traced after the asynchronous completion of the verb is signaled. In this situation, the application has legitimately freed the data buffer, which is still traced.

RESOLUTION

To resolve this problem, obtain the latest service pack for SNA Server version 4.0. For additional information, please see the following article in the Microsoft Knowledge Base:

Q215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack

STATUS

Microsoft has confirmed this to be a problem in Microsoft SNA Server, versions 3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 3.0 SP4, 4.0, 4.0 SP1, 4.0 SP2. This problem was first corrected in SNA Server version 4.0 Service Pack 3.

Additional query words: cpic

Keywords : sna4sp3fix sna3 sna3sp1 sna3sp2 sna3sp3 sna3sp4 sna4 sna4sp1 sna4sp2
Version : WINDOWS:3.0,3.0SP1,3.0SP2,3.0SP3,3.0SP4,4.0,4.0SP1,4.0SP2
Platform : WINDOWS
Issue type : kbbug