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SAP system is not starting

Dear Experts,

Currently, we're not able to start the SAP system from the operating system level. From the dev_disp log we found the below error message:

DpUpdateStatusFileWith: state=YELLOW, reason=Request handling without progress *** WARNING => DpRequestProcessingCheck: potential request processing problem detected (123. check) [dpxxwp.c 4705]

SAP NW system is running with ADA database and operating system Solaris 10.

Any ideas are appreciated.

Thanks & best regards,

Sreenu

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5 Answers

  • Mar 13 at 11:52 AM

    Hi Sreeni,

    Background work process number 4 is the culprit here, as shown in dispatcher log.

    Try killing the process if that helps. If not, look at the trace file dev_w10 to see what is causing it to hold Sem 10 for so long.

    |No |Pid     |Type|State  |Cause|Err|Prio|Sess-Key        |Sess-Type|Locked|Sem|
    |---|--------|----|-------|-----|---|----|----------------|---------|------|---|
    |  0|6563    |DIA |WP_NEW |     |   |    |                |         |      |10 |
    |  1|6564    |DIA |WP_NEW |     |   |    |                |         |      |10 |
    |  2|6565    |DIA |WP_NEW |     |   |    |                |         |      |10 |
    |  3|6566    |UPD |WP_NEW |     |   |    |                |         |      |10 |
    |  4|6567    |BTC |WP_NEW |     |   |    |                |         |10    |   |
    |  5|6568    |BTC |WP_NEW |     |   |    |                |         |      |10 |
    |  6|6569    |SPO |WP_NEW |     |   |    |                |         |      |10 |
    |  7|6570    |UP2 |WP_NEW |     |   |    |                |         |      |10 |

    Regards,

    Prithviraj

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    • Former Member

      Hello Prithviraj,

      Thank you for the proposal.

      I don't have the trace file dev_w10 but i see the error "ThSemAlreadyLocked: waiting for semaphore 10 held by process 6719 since 5218s" in trace file dev_w7 (see attached file).

      Based on your Information, i killed the process 6719 and restart the System but still the issue exists.

      Any other ideas are appreciated.

      Thank you,

      Sreenu

      dev-w7.txt (33.8 kB)
  • Mar 12 at 11:00 PM

    Sreenu,

    If you want help with this, you have to provide quite a bit more information. I recommend having a look at this blog:

    https://blogs.sap.com/2013/06/20/logical-basic-abap-system-start-troubleshooting-sequence/

    If you go through the basic steps outlined there, chances are you'll resolve your own problem (and if so, please do come back and tell us how you solved it!). And if not, well, you'll probably at least narrow it down to one or more components of the system, which should provide a clue on what logs to provide here to get more help.

    Version information is always helpful, too.

    Cheers,
    Matt

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    • Former Member

      Hello Matt,

      Thank you for the blog. In my case, I see all the traces regarding the message Server, Dispatcher and work process traces in the OS Level.

      For more Information, please find the attached trace files dev_disp and dev_w0.

      Thank you,

      Sreenu

      dev-disp.txt (21.2 kB)
      dev-w0.txt (295.5 kB)
  • Mar 12 at 11:53 PM

    Hi!

    Providing the complete "dev_disp" and "dev_w0" might help too ;-).

    Please "zip" and attach them to this thread.

    Cheers!

    Isaías

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    • Hello Sreenu,

      Has the issue been solved? Can we provide further assistance? :)

      If the issue was solved, please close this question and select the best answer :).

      Best regards,

      Isaías

  • Mar 14 at 09:01 AM

    Hi,

    Checking dispatcher trace file, and snapshot is created:
    ********** SERVER SNAPSHOT 141 (Reason: Request handling without progress) - begin **********

    |No |Pid |Type|State |Cause|Err|Prio|Sess-Key |Sess-Type|Locked|Sem|Time |Program |Cli|User |Action |Action-Info |
    |---|--------|----|-------|-----|---|----|----------------|---------|------|---|-----|----------------------------------------|---|------------|--------------------|--------------------|
    | 0|6563 |DIA |WP_NEW | | | | | | |10 | | | | | | |
    | 1|6564 |DIA |WP_NEW | | | | | | |10 | | | | | | |
    | 2|6565 |DIA |WP_NEW | | | | | | |10 | | | | | | |
    | 3|6566 |UPD |WP_NEW | | | | | | |10 | | | | | | |
    | 4|6567 |BTC |WP_NEW | | | | | |10 | | | | | | | |
    | 5|6568 |BTC |WP_NEW | | | | | | |10 | | | | | | |
    | 6|6569 |SPO |WP_NEW | | | | | | |10 | | | | | | |
    | 7|6570 |UP2 |WP_NEW | | | | | | |10 | | | | | |

    Semaphore 10 is being held by WP4, which is in status WP_NEW. The rest of the work processes are waiting for it.
    Is it DB up and correctly running. Normally those kind of situations are related to wrong connection from WP to DB.
    Please provide dev_w4 trace file, to check c-stack generated on its trace.

    Thanks,
    Raquel

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    • Hi,
      C-stack generated on the trace shows:

      M ------------------ C-STACK ----------------------
      [0] SunDoStack2, at 0x1eb6c59
      [1] CTrcStack2, at 0x1eb67f3
      [2] __1cOThStackHandler6F_v_, at 0x1c83c76
      [3] __1cKDpTrcOnOff6Fi_v_, at 0x1b7ea6f
      [4] __sighndlr, at 0xfffffd7ff5fedd16
      [5] call_user_handler, at 0xfffffd7ff5fe25e2
      [6] sigacthandler, at 0xfffffd7ff5fe280e
      [7] ????????, at 0xffffffffffffffff
      [8] SemTimedOp, at 0x1c28e9a
      [9] RqOsSem, at 0x1c25bc3
      [10] SemRq, at 0x1c26772
      [11] __1cJThIPCInit6FpC_i_, at 0x1c859ce
      [12] __1cGThInit6F_i_, at 0x1c85067
      [13] __1cHThStart6F_v_, at 0x1c843be
      [14] DpMain, at 0x1b1d2d9
      M -------------------------------------------------

      Is DB up and correctly runnign? Please provide also dev_w0 trace.

      Regards,
      Raquel

  • Aug 09 at 09:00 AM

    The WP died waiting for a semaphore to be released,

    "ThSemAlreadyLocked: waiting for semaphore 10 held by process 6719 since XX"

    Check what is running on PID 6719, you might have to kill the process to release the locked semaphore.

    Regards, JP

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