Central Services: Enque Server cannot be started

Ka Wai Wong Feb 15, 2012 5:44 AM

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Hi All,

I'm installing SAP ERP EPH5 in HA environment.

The Central Service ASCS installed successfully, however, the enque server cannot be started correctly. (message server can be started)

Here is the output of dev_eqnsrv

---------------------------------------------------
trc file: "dev_enqsrv", trc level: 1, release: "720"
---------------------------------------------------
sysno      00
sid        PRD
systemid   324 (IBM RS/6000 with AIX)
relno      7200
patchlevel 0
patchno    110
intno      20020600
make       multithreaded, Unicode, 64 bit, optimized
pid        16056526


[Thr 01] Wed Feb 15 12:33:00 2012
[Thr 01] profile    /usr/sap/PRD/SYS/profile/PRD_ASCS00_PRDAP
[Thr 01] hostname   P720N1
[Thr 01] Listen successful on port/service sapdp00

[Thr 01] Wed Feb 15 12:33:01 2012
[Thr 01] EnqInitCleanupServer: Shm of enqueue table (rc = 3) does not exist, nothing to clean up
[Thr 01] *** ERROR => EnsMemObj::Initialize (else): allocation of 163920080 Bytes failed for the ft table, please c
heck parameters enque/max_query_requests and enque/server/query_block_size.
Please see SAP note 834589 for parameter configuration suggestions [ensutil.cpp  503]
[Thr 01] *** ERROR => main: Server initialisation failed!
  Errortext:"EnsMemObj: internal error detected at ensutil.cpp:509 Errorinfo: "EnsMemObj::Initialize"" [enservmain.
c 248]

Here is the ASCS profile

SAPSYSTEMNAME = PRD
SAPSYSTEM = 00
INSTANCE_NAME = ASCS00
DIR_CT_RUN = $(DIR_EXE_ROOT)/run
DIR_EXECUTABLE = $(DIR_INSTANCE)/exe
SAPLOCALHOST = PRDAP
#-----------------------------------------------------------------------
# SAP Message Server parameters are set in the DEFAULT.PFL
#-----------------------------------------------------------------------
ms/standalone = 1
ms/server_port_0 = PROT=HTTP,PORT=81$$
#-----------------------------------------------------------------------
# SAP Enqueue Server
#-----------------------------------------------------------------------
enque/table_size = 64000
enque/snapshot_pck_ids = 1600
enque/server/max_query_requests = 5000
enque/server/max_requests = 5000
enque/async_req_max = 5000
enque/encni/threadcount = 4
rdisp/enqname = $(rdisp/myname)
ssl/ssl_lib = $(DIR_EXECUTABLE)$(DIR_SEP)$(FT_DLL_PREFIX)sapcrypto$(FT_DLL)
sec/libsapsecu = $(ssl/ssl_lib)
ssf/ssfapi_lib = $(ssl/ssl_lib)
enque/server/replication = true
ipc/shm_psize_10 =236000000

I have tried to increase the max_requests but the server still cannot be started.

Please advise what should i do to make the enque server start again.

Thanks,

Halu

Re: Central Services: Enque Server cannot be started

purnachand aravapalli Feb 15, 2012 5:56 AM (in response to Ka Wai Wong)

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Hi,

Please adopt the parameters based on OSS notes 920979. I had same issue which got resolved with these note

Regards

Purna
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- Re: Central Services: Enque Server cannot be started
  
  purnachand aravapalli Feb 15, 2012 5:58 AM (in response to purnachand aravapalli)
  
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  Also please refer to 1029237,1043968
  
  Regards
  Purna
  
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- Re: Central Services: Enque Server cannot be started
  
  Ka Wai Wong Feb 15, 2012 6:45 AM (in response to purnachand aravapalli)
  
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  Hi Purna,
  
  Thanks for the note information.
  I have tried to change the parameter as follow
  from
  enque/table_size = 64000 enque/server/max_query_requests = 5000 enque/server/max_requests = 5000
  
  to
  
  enque/table_size = 500000 enque/server/max_query_requests = 5000 enque/server/max_requests = 17500
  
  But with the similar output as before:
  --------------------------------------------------- trc file: "dev_enqsrv", trc level: 1, release: "720" --------------------------------------------------- sysno 00 sid PRD systemid 324 (IBM RS/6000 with AIX) relno 7200 patchlevel 0 patchno 110 intno 20020600 make multithreaded, Unicode, 64 bit, optimized pid 11469002 [Thr 01] Wed Feb 15 13:25:19 2012 [Thr 01] profile /usr/sap/PRD/SYS/profile/PRD_ASCS00_PRDAP [Thr 01] hostname P720N1 [Thr 01] Listen successful on port/service sapdp00 [Thr 01] Wed Feb 15 13:25:20 2012 [Thr 01] EnqInitCleanupServer: Shm of enqueue table (rc = 3) does not exist, nothing to clean up [Thr 01] *** ERROR => EnsMemObj::Initialize (else): allocation of 573720080 Bytes failed for the ft table, please c heck parameters enque/max_query_requests and enque/server/query_block_size. Please see SAP note 834589 for parameter configuration suggestions [ensutil.cpp 503] [Thr 01] *** ERROR => main: Server initialisation failed! Errortext:"EnsMemObj: internal error detected at ensutil.cpp:509 Errorinfo: "EnsMemObj::Initialize"" [enservmain. c 248]
  
  In my case, the enque server cannot be started, there is no process listenon port sapdp00 (3200)
  
  Cheers,
  Halu
  
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  - Re: Central Services: Enque Server cannot be started
    
    purnachand aravapalli Feb 15, 2012 6:48 AM (in response to Ka Wai Wong)
    
    Currently Being Moderated
    
    Hi,
    
    Please try below parameters.
    
    enque/table_size = 300000
    enque/snapshot_pck_ids = 1600
    enque/server/max_query_requests = 1000
    enque/server/max_requests = 8800
    enque/async_req_max = 5000
    enque/encni/threadcount = 4
    enque/server/req_block_count = 2000
    enque/enq-queue/size = 5000
    enque/server/query_block_count = 2000
    enque/server/query_block_size = 20000
    
    Regards
    
    Purna
    
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    - Re: Central Services: Enque Server cannot be started
      
      Ka Wai Wong Feb 15, 2012 7:31 AM (in response to purnachand aravapalli)
      
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      Hi,
      Thanks for the paremeter, however, another error message was occurred:
      --------------------------------------------------- trc file: "dev_enqsrv", trc level: 1, release: "720" --------------------------------------------------- sysno 00 sid PRD systemid 324 (IBM RS/6000 with AIX) relno 7200 patchlevel 0 patchno 110 intno 20020600 make multithreaded, Unicode, 64 bit, optimized pid 12779610 [Thr 01] Wed Feb 15 13:52:26 2012 [Thr 01] profile /usr/sap/PRD/SYS/profile/PRD_ASCS00_PRDAP [Thr 01] hostname P720N1 [Thr 01] Listen successful on port/service sapdp00 [Thr 01] Wed Feb 15 13:52:27 2012 [Thr 01] EnqInitCleanupServer: Shm of enqueue table (rc = 3) does not exist, nothing to clean up [Thr 01] ShadowTable:attach: ShmCreate - pool doesn't exist [Thr 01] initialize_global: Enqueue server started with replication functionality [Thr 01] Enqueue: EnqMemStartupAction Utc=1329285147 [Thr 01] EnqLockTableCreate: create lock table (size = 307200000) [Thr 01] EnqLockTableMapToLocalContext: enque/use_pfclock2 = FALSE [Thr 01] *** ERROR => InitEntryMarkedForDel: malloc(1070140) failed [enxxmini.h 222] [Thr 01] ***LOG GEA=> [enxxmini.h 223] [Thr 01] ***LOG GZZ=> InitEntryMarkedForDel: malloc(1070140) failed [enxxmini.h 224] [Thr 01] ***LOG GZZ=> ENSA: PID = 12779610 [enservglob.c 808] [Thr 01] *** ERROR => initialize_global: failed to initialize the enqueue table: rc=8 [enservglob.c 811] [Thr 01] *** ERROR => main: Server initialisation failed! Errortext:"error at server initialisation detected at enservglob.cpp:812 Errorinfo: "initialize_global: failed to initialize the enqueue table: rc=8 "" [enservmain.c 248]
      
      The enqueue table cannot be initialized.
      Seems memory cannot be allocated.
      
      Cheers,
      Halu
      
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      - Re: Central Services: Enque Server cannot be started
        
        purnachand aravapalli Feb 15, 2012 7:46 AM (in response to Ka Wai Wong)
        
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        Below URL has more details HA enqueue setup
        
        http://help.sap.com/saphelp_nw04s/helpdata/en/e3/d49d775bf44a8fb37d77478d218b9a/content.htm
        
        Regards
        Purna
        
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      - Re: Central Services: Enque Server cannot be started
        
        Vijaylakshmi Horakeri Feb 16, 2012 1:20 PM (in response to Ka Wai Wong)
        
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        Hi,
        
        This looks like shared memory issue. Can you try to run "cleanipc <XX> remove" and then start the system.
        <XX> is instance number.
        
        Regards,
        Vijaya
        
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        Re: Central Services: Enque Server cannot be started
        
        Ramesh Rajamohan Feb 17, 2012 11:06 PM (in response to Vijaylakshmi Horakeri)
        
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        Hi,
        
        I think you have issues with kernel mismatch between EnQ server instance and CI. This can happen in a clustered environments. After the upgrade, we have to manually copy the kernel files to enq instances.
        
        Please check the kernels in ASCS instance.
        
        Also refer to note 1463227.
        
        Regards,
        Ramesh
        www.rajamohan.com
        
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      - Re: Central Services: Enque Server cannot be started
        
        Gaurav Kumar Feb 21, 2012 6:29 AM (in response to Ka Wai Wong)
        
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        Hi ,
        
        Please check the following :-
        
        1) Kernel on both ASCS Lpar and ERS Lpar should be same.
        2) Restart the ERS after cleaning all the processes running with <sid>adm.
        
        Thanks
        Gaurav
        
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Re: Central Services: Enque Server cannot be started

Kunal Salunkhe Dec 27, 2012 10:54 PM (in response to Ka Wai Wong)

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Hello,

We are facing same issue, can you please let me know how did the above issue got fixed ?

Thanks,
Kunal Salunkhe
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- Re: Central Services: Enque Server cannot be started
  
  Andrea Meneghini Jan 30, 2013 12:27 PM (in response to Kunal Salunkhe)
  
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  I had the same issue and was solved checking/correcting the ulimit for the sidadm user
  
  Regards
  Andrea
  
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