2822478 - Crash of ABAP application server (running on Unix-like platform) due to cleanipc

Important: This article intends to provides RCA for a crash event that fits the criteria explained below. It does not aim to resolve an ongoing startup problem.

SAP NetWeaver application server running at a UNIX OS becomes unstable and crashes. The following information can be found at the traces of the kernel processes:

• Work process trace (dev_w*):
  
  *** ERROR => e=43 semop(1114127,(0,0,0),(0,1,0),2) (43: Identifier removed) [evtux.c      1121]
  
  
• Dispatcher trace (dev_disp):
  

  *** ERROR => e=22 semop(851975,(0,-1,6144),1) (22: Invalid argument) [semux.c 577]
  *** ERROR => DpITmSlotAllocate: SemRq [dpxxtool2.c 4391]
  *** ERROR => e=22 semop(851975,(0,-1,6144),1) (22: Invalid argument) [semux.c 577]
  *** DP_FATAL_ERROR => DpTmDisconnect: SemRq
  *** DISPATCHER EMERGENCY SHUTDOWN ***

• ICM trace (dev_icm):
  

  *** ERROR => e=43 semop(2293811,(16,0,0),(16,1,0),2) (43: Identifier removed) [evtux_mt.c 1121]
  *** ERROR => EvtWtRst(16997) failed: 1 [mpixx_mt.c 6199]
  *** ERROR => IcmMpiWatchDogThread: MpiSelSelect failed(rc=3): cleanipc was called for this instance [icxxthr_mt.c 1512]
  *** IcmMpiWatchDogThread: exit thread ***
  (...)
  *** ERROR => e=22 semop(1081358,(0,-1,6144),1) (22: Invalid argument) [semux_r_mt.c 577]
  *** ERROR => DpRqIPutIntoQ: SemRq (rc=1) [dpxxqueu_mt. 590]

Please note that ICM already provides the cause by explicitly writing: "cleanipc was called for this instance"

• SAP NetWeaver
• Unix-like Operating systems

KBA , BC-CST-DP , Dispatcher, Task Handler , BC-OP-LNX , Linux , BC-OP-AIX , IBM AIX , BC-OP-HPX , HP-UX , BC-OP-SUN , SUN Solaris , Problem