COM+ Loosely Coupled Event (LCE) May Not Be Fired Correctly (317935)
The information in this article applies to:
- Microsoft COM+ 1.5, when used with:
- the operating system: Microsoft Windows XP
This article was previously published under Q317935 SYMPTOMS
Under stress, the same loosely coupled event (LCE) may be fired repeatedly. Moreover, if a lot of do-nothing test events are fired in a short time, events may be dropped without notifying the subscriber. You can use the COMSPY instrumentation sample to monitor the number of events.
NOTE: This problem does not occur on the Microsoft Windows 2000 operating system.
CAUSE
Events can be fired repeatedly because the event starting time is reset in a loop. Events are dropped because some events obtain the same time stamp, which results in a buffer overflow.
RESOLUTION
To resolve this problem, obtain Microsoft XP COM+ Hotfix Rollup 1.
For additional information, click the article number below
to view the article in the Microsoft Knowledge Base:
317926 INFO: Availability of Windows XP COM+ Hotfix Rollup Package 1
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows XP service pack that contains this hotfix. To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site: 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 typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question. STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. MORE INFORMATION
To resolve the problem in which events are fired repeatedly, you must reset the event starting time when the current event session is exiting. To resolve the problem in which events are dropped, you must use a more granular time stamp and use a dynamic event tracing buffer.
| Modification Type: | Minor | Last Reviewed: | 10/6/2005 |
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| Keywords: | kbbug kbfix kbQFE KB317935 |
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