Microsoft KB Archive/172470

= Zero-Length RU Causes Subsequent Jobs to Hang =

Article ID: 172470

Article Last Modified on 6/24/2004

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APPLIES TO


 * Microsoft SNA Server 4.0

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This article was previously published under Q172470





SYMPTOMS
If a zero-length RU is encountered and Job Monitoring is enabled, any subsequent jobs sent to SNA Server Print Service will hang.



CAUSE
If Job Monitoring is turned on for a session, jobs are not fully closed down until the printer has notified SNA Server Print Service that the job has finished printing. Unfortunately, a zero-length job never starts printing, so it never finishes and the job is never properly closed.



STATUS
Microsoft has confirmed this to be a problem in SNA Server version 3.0 Service Pack 1 (SP1). This problem was corrected in the latest SNA Server version 3.0 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



MORE INFORMATION
  DLC                      DAF:E9 OAF:01 ODAI:off Normal DLC                     BID    RQD DFC FI BC EC DR1 PI   DLC DLC   Header  at address 010342E0, 1 elements DLC  01020005 6C002C00 E9010005 01001C01     <....l.,.Z.......> DLC DLC   Element at address 0152CFF0, start 10, end 13 DLC  4B8100C8                                 FMI FMI  01027102->10120600 FMIST CTRL BID   REQ FMI                     ACK required Msg key:6 FMHI BCI ECI RBI FMI FMI   Header  at address 010342E0, 0 elements FMI  02011401 E0012C00 E9010006 01001C01     <......,.Z.......> FMI FMI  10120600->01027102 FMIST CTRL BID   ACK FMI                     Msg key:4 COMMIT EBI CDI SDI FMI FMI   Header  at address 01034418, 0 elements FMI  02021405 17001500 00000004 01005E02     <..............^.> DLC DLC  01020101->04160080 DLC DATA DLC                     DAF:01 OAF:E9 ODAI:off Normal DLC                     BID    +RSP DFC FI BC EC DR1 PI   DLC DLC   Header  at address 010342E0, 1 elements DLC  02011401 E0002C00 01E90005 01001C01     <......,..Z......> DLC DLC   Element at address 0152B7FC, start 10, end 13 DLC  CB8100C8                                <.a.H            > Zero Length RU:   DLC DLC  04160080->01020101 DLC DATA DLC                     DAF:E9 OAF:01 ODAI:off Normal DLC                     RQE FMD BC EC DR1 PI BB EB   DLC DLC   Header  at address 010342E0, 1 elements DLC  00020011 6A002C00 E9010006 01001C01     <....j.,.Z.......> DLC DLC   Element at address 0152B7FC, start 10, end 12 DLC  0391C0                                  <.j.             >

DLC DLC  01020101->04160080 DLCST RSRC DLC                     Credit:4 DLC DLC   Header  at address 01034418, 0 elements DLC  04020004 17001500 00000004 01005E02     <..............^.> DLC DLC  01020101->04160080 DLC DATA DLC                     DAF:01 OAF:E9 ODAI:off Normal DLC                     +RSP FMD BC EC PI   DLC DLC   Header  at address 01034210, 1 elements DLC  04020000 00002C00 01E90000 01002801     <......,..Z....(.>   DLC   DLC    Element at address 0152CFF0, start 10, end 12    DLC   830100                                     FMI   --   FMI   01027102->10120600 FMI DATA   FMI                      NO ACK reqd Key:7 Seq:6 BCI ECI BBI EBI CEI   FMI                      BBIUI EBIUI   FMI   FMI    Header  at address 010342E0, 1 elements    FMI   00020007 6C0E2C00 E9010006 01001C01     <....l.,.Z.......>   FMI   --   FMI   01027102->10120600 FMIST SESS   FMI                      Code:BETB   FMI   FMI    Header  at address 01034620, 0 elements    FMI   05020007 00002C00 E9010002 01001C01     <......,.Z.......>   FMI   --   FMI   10120600->01027102 FMIST RSRC   FMI                      Credit:1   FMI   FMI    Header  at address 01034620, 0 elements    FMI   04010001 E0012C00 E9010006 01005E02     <......,.Z.....^.>   FMI   -- FMI  10120600->01027102 FMIST ACK FMI                     Msg key:7 Replies:5376 Sequence:6 FMI FMI   Header  at address 01034620, 0 elements FMI  01020007 17001500 00000006 01005E02     <..............^.> DLC  -- DLC  04160080->01020101 DLCST RSRC DLC                     Credit:4 DLC DLC   Header  at address 01034418, 0 elements DLC  04020004 00002C00 01E90000 01001C01     <......,..Z......> A request to start a new job is submitted from the host:   DLC   -- DLC  04160080->01020101 DLC DATA DLC                     DAF:E9 OAF:01 ODAI:off Normal DLC                     BID    RQD DFC FI BC EC DR1 PI   DLC DLC   Header  at address 01034418, 1 elements DLC  01B0B006 00002C00 E9010007 01001C01     <......,.Z.......> DLC DLC   Element at address 0152CFF0, start 10, end 13 DLC  4B8100C8                                 This request is then passed over FMI to the SNA Server Print Service:   FMI   -- FMI  01027102->10120600 FMIST CTRL BID   REQ FMI                     ACK required Msg key:8 FMHI BCI ECI RBI FMI FMI   Header  at address 01034418, 0 elements FMI  02011401 E0012C00 E9010008 01001C01     <......,.Z.......> There is no response from the SNA Server Print Service.

With the fix applied, the SNA Server Print Service will generate a message that the zero-length RU was printed successfully, thus giving it permission to close the session down. This will allow any subsequent jobs to then be printed.

Keywords: kbbug kbfix kbnetwork KB172470

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