DOCUMENT:Q180704 14-MAR-2000 [sna] TITLE :SLI_CLOSE May Hang if CICS Doesn't Respond to SHUTC PRODUCT :Microsoft SNA Server PROD/VER:WINDOWS:3.0,3.0 SP1,3.0 SP2,4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft SNA Server, versions 3.0, 3.0 SP1, 3.0 SP2, 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When an SLI application calls SLI_CLOSE, the SLI_CLOSE may never complete if the host sends an UNBIND request but fails to send a SHUTC response. This problem was found when connecting an SLI application to CICS. If the CICS region is stopped and started, in some cases the SLI application's SLI_CLOSE request failed to complete. The following API and message sequence summarizes the failure scenario: SLI Program SLI API SNA Server/Host =========== ========= ================= < SLI program in session with the host > SLI_BID -> <- SHUTD <- SLI_BID (LUA_SESSION_END_REQUESTED) SLI_CLOSE -> SHUTD +RSP -> CHASE -> <- CHASE +RSP SHUTC -> <- UNBIND (type 01 = normal) SENSE 08390000 -> UNBIND +RSP -> CAUSE ===== The SLI interface was hanging if it received an UNBIND when waiting for a SHUTC response. STATUS ====== Microsoft has confirmed this to be a problem in SNA Server version 3.0, 3.0 Service Pack 1 (SP1), 3.0 SP2, and 4.0. This problem was corrected in the latest SNA Server versions 3.0 and 4.0 U.S. Service Packs. For information on obtaining these Service Packs, query on the following word in the Microsoft Knowledge Base (without the spaces): S E R V P A C K MORE INFORMATION ================ With this update applied, the SLI interface will now complete the SLI_CLOSE if an UNBIND is received, even if no SHUTC response is received. Additional query words: ====================================================================== Keywords : Technology : kbAudDeveloper kbSNAServSearch kbSNAServ300 kbSNAServ400 kbSNAServ300SP1 kbSNAServ300SP2 Version : WINDOWS:3.0,3.0 SP1,3.0 SP2,4.0 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.