DOCUMENT:Q262312 24-JUN-2000 [sms] TITLE :Cannot Process More Than 11 Advertisements for the Same Program PRODUCT :Microsoft Systems Management Server PROD/VER:winnt:2.0 SP2 OPER/SYS: KEYWORDS:kbtool kbsms200 kbsms200bug kbsms200fix kbsms200sp2fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Systems Management Server version 2.0 SP2 ------------------------------------------------------------------------------- SYMPTOMS ======== After a client computer receives more than 11 advertisements from the same program, the Offer Data Provider stops responding (hangs). No new offers are received until the next reboot, at which point the Offer Data Provider stops responding again. This behavior is repeated until the number of advertisements to the program is reduced. CAUSE ===== This problem can occur because the Offer Data Providers merge the program details and associated offers and then send this information by using an anonymous pipe IPC connection to Available Programs Manager for processing. If the number of advertisements is greater than 11, the required buffer size exceeds 4 kilobytes (KB). The anonymous pipe is created with a default buffer size of 4 KB, but the IPC mechanism is configured to transmit blocks up to 6,000 bytes, so an attempt is made to transmit a buffer that is greater than 4 KB in a single block. The problem is that the WriteFile is blocked after 4 KB has been sent because the pipe is effectively full. The WriteFile is blocked indefinitely until a read is performed on the other end of the pipe. However, a read does not occur until it is signaled that the write is finished, which does not happen until the WriteFile completes, and WriteFile does not complete until it has transmitted the entire buffer. This results in the Offer Data Provider hanging. RESOLUTION ========== To resolve this problem, obtain the latest service pack for Systems Management Server version 2.0. For additional information, please see the following article in the Microsoft Knowledge Base: Q236325 How to Obtain the Latest Systems Management Server 2.0 Service Pack STATUS ====== Microsoft has confirmed this to be a problem in Systems Management Server version 2.0 and 2.0 SP1. This problem was first corrected in Systems Management Server version 2.0 Service Pack 2. MORE INFORMATION ================ The client that is requesting the pipe connection passes its message size in the connection request. The server then allocates a pipe with a buffer size that permits the client to send the entire message at one time, but the server will deny a pipe connection to the client if its message size is greater than 64 KB. With this increase in the size of the buffer, it now permits a little over 100 advertisements per program. Additional query words: prodsms ====================================================================== Keywords : kbtool kbsms200 kbsms200bug kbsms200fix kbsms200sp2fix Technology : kbSMSSearch kbSMS200SP2 Version : winnt:2.0 SP2 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.