Question Re: JCMON does not start in Technology Q&A

JCMON does not start

jay_b2 — Thu, 26 Jan 2012 18:27:18 GMT

I'm using a NW 7.3 JAVA only based EP system. This is a newly setup system with default parameters. I am able to start the portal and login from the main page.

However, I'm unable to start jcmon..

<SID>adm 16>  jcmon pf=/usr/sap/<SID>/SYS/profile/<SID>_J00_<HostName>
JCMon is an internal tool for interactive usage.
Suspending it or running it in the background may have unexpected and undesirable effects. 
        Do you understand these restrictions? (y/n): y 
[Thr 01] MtxInit: -2 0 0 
============================================================
JControl Monitor Program - Main Menu
============================================================
0  : exit
------------------------------------------------------------
10 : Cluster Administration Menu
------------------------------------------------------------
20 : Local Administration Menu
------------------------------------------------------------
30 : Solid Rock Administration Menu
------------------------------------------------------------
command => 20
Can't open shared memory administration (rc = 3)

This gives below error in dev_jcontrol process :

[Thr 01] *** ERROR => Can't compute dynamic shared memory size (rc = 4 object not found) [jcntrxx_mt.c 2134]
[Thr 01] *** ERROR => Can't initialize JControl Administration [jcntrxx_mt.c 294]
[Thr 01] JControlCloseProgram: started (exitcode = -1)
[Thr 01] *** ERROR => SfDestroyDynShm: Dynamic shared memory is not opened. [jsfxxshm_mt. 2369]
[Thr 01] JControlCloseProgram: good bye... (exitcode = -1)

I tried to shut down portal --> run jcmon pf=... -c for cleanup of shared memory --> cleanipc --> start portal again --> run jcmon.. that gives same error

Do I need to expand the shared memory with VA /Cfg tool knowing that portal starts fine ? Is there anything more I can check before working with mem parameters...

Thanks,

Re: JCMON does not start

jay_b2 — Thu, 26 Jan 2012 18:33:29 GMT

I tried to navigate to Cluster Admin menu --> 1. Display Instance list.. that shows my java instance status as unknown 😮

command => 1
 
|Index|SID|SNR|Hostname                                                        |Status                        |
|-----|---|---|----------------------------------------------------------------|------------------------------|
|    0|<SID>|00 |<HostName>                                                      |UNKNOWN                       |

However, the process is started as displayed below :

<hostname>:<SID>adm 17> ps -ef | grep sap
  <SID>adm  5177520  7077906   0 23:50:21      -  0:00 ig.sap<SAPSID>_J00 -mode=profile pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> 
  dp1adm  6881304  9044124   0 23:22:18      -  0:00 jc.sap<DASID>_SMDA97 pf=/usr/sap/<DASID>/SYS/profile/<DASID>_SMDA97_<hostname> 
  <SID>adm  7077906        1   0 23:50:20      -  0:00 sapstart pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> 
  <SID>adm  7405704  5177520   0 23:50:21      -  0:00 /usr/sap/<SAPSID>/J00/exe/igspw_mt -mode=profile -no=1 -restartcount=0 -wdpid=5177520 pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> 
  <SID>adm  7471240  5177520   0 23:50:21      -  0:00 /usr/sap/<SAPSID>/J00/exe/igspw_mt -mode=profile -no=0 -restartcount=0 -wdpid=5177520 pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> 
  <SID>adm  7733356  7077906   0 23:50:21      -  0:00 jc.sap<SAPSID>_J00 pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> 
  <SID>adm  8978438  5177520   0 23:50:21      -  0:00 /usr/sap/<SAPSID>/J00/exe/igsmux_mt -mode=profile -restartcount=0 -wdpid=5177520 pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> 
  dp1adm  9044124        1   0 23:22:18      -  0:00 sapstart pf=/usr/sap/<DASID>/SYS/profile/<DASID>_SMDA97_<hostname> 
    root  9109610        1   0   Jan 11      -  0:12 /usr/sap/hostctrl/exe/saphostexec pf=/usr/sap/hostctrl/exe/host_profile 
  sapadm  9240678        1   0   Jan 11      -  1:21 /usr/sap/hostctrl/exe/sapstartsrv pf=/usr/sap/hostctrl/exe/host_profile -D 
  <SID>adm  9699504  7733356   0 23:50:51      -  0:01 /usr/sap/<SAPSID>/J00/exe/icman -appTrc pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> -nodeId=1 -f /usr/sap/<SAPSID>/J00/work/dev_icm 
    root  9764916        1   0   Jan 11      -  1:03 /usr/sap/hostctrl/exe/saposcol -l -w60 pf=/usr/sap/hostctrl/exe/host_profile 
  <SID>adm  9830494        1   0   Jan 12      -  2:21 /usr/sap/<SAPSID>/J00/exe/sapstartsrv pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> -D -u <SID>adm 
  dp1adm  9961586        1   0 23:25:14      -  0:00 /usr/sap/<DASID>/SMDA97/exe/sapstartsrv pf=/usr/sap/<DASID>/SYS/profile/<DASID>_SMDA97_<hostname> -D -u dp1adm 
  <SID>adm 10092590  7733356   0 23:50:55      -  3:11 /usr/sap/<SAPSID>/J00/exe/jstart -appTrc -nodeId=2 pf=/usr/sap/<SAPSID>/SYS/profile/<SAPSID>_J00_<hostname> -DSAPINFO=<SAPSID>_00_server0 -hostvm -nodeName=ID2579550 -file=/usr/sap/<SAPSID>/J00/j2ee/cluster/instance.properties -jvmFile=/usr/sap/<SAPSID>/J00/work/jstart.jvm -traceFile=/usr/sap/<SAPSID>/J00/work/dev_server0 -javaOutFile=/usr/sap/<SAPSID>/J00/work/jvm_server0.out 
  <SID>adm 10354870  7012408   0 00:00:38  pts/0  0:00 grep sap 
  dp1adm 10420316  6881304   0 23:22:21      -  0:09 /usr/sap/<DASID>/SMDA97/exe/jstart -appTrc -nodeId=0 pf=/usr/sap/<DASID>/SYS/profile/<DASID>_SMDA97_<hostname> -hostvm -nodeName=smdagent -file=/usr/sap/<DASID>/SMDA97/SMDAgent/smdagent.properties -jvmFile=/usr/sap/<DASID>/SMDA97/work/jstart.jvm -traceFile=/usr/sap/<DASID>/SMDA97/work/dev_smdagent -javaOutFile=/usr/sap/<DASID>/SMDA97/work/jvm_smdagent.out 
<hostname>:<SID>adm 18>

Re: JCMON does not start

Former Member — Thu, 26 Jan 2012 21:16:55 GMT

Jay,

Try to clear the JCMON shared memory using below cmd and execute again.

jcontrol pf=/usr/sap/SID/SYS/profile/SID_DVEBMGS*_sapd** -c

refer to below link which explains the error message and fix

http://help.sap.com/saphelp_nw04/helpdata/en/12/bb0a412a06f023e10000000a155106/frameset.htm

As a last option, restart the server and try again.

Thanks,

Arjun

Re: JCMON does not start

jay_b2 — Fri, 27 Jan 2012 05:56:24 GMT

I tried to shut down portal --> run jcmon pf=... -c for cleanu

I have done those tests..

Re: JCMON does not start

Former Member — Fri, 27 Jan 2012 06:00:11 GMT

I didn't suggest you to shutdown portal using JCMON. Suggested to clear shared memory for JCMON using jcontrol command...Check the command that I pasted and Did you check the link ?

Re: JCMON does not start

jay_b2 — Fri, 27 Jan 2012 07:44:43 GMT


I didn't suggest you to shutdown portal using JCMON. Suggested to clear shared memory  for JCMON using jcontrol command...Check the command that I pasted and Did you check the link ?

Hi,

I did not shutdown the portal using jcmon ... The above sequence meant I

- had shut down the portal (stopsap)..

- then used jcmon pf=... -c to clear the shared memory..

- started the portal (startsap) and used jcmon again..

Any further guess ?

Re: JCMON does not start

Former Member — Fri, 27 Jan 2012 08:10:51 GMT

Dear Jay,

since 7.1 it's JSMON, JCMON is only for internal usage now.

Kind regards,

Gerd

Re: JCMON does not start

Former Member — Fri, 27 Jan 2012 13:21:50 GMT

Hello Jay,

As far as I remember, JCMON is no longer exist as of release 7.10. JCMON is replaced with JSMON. Please try JSMON and se.

Thanks,

Siva Kumar

Re: JCMON does not start

Former Member — Fri, 30 May 2014 08:49:47 GMT

Dear All,

As had same case i have done all the suggestions as above but my issue was still same.

then after i have taken the dump of logs at os level using below command

sidadm> isql -Usapsa -SSID

/>password

/>dump transaction <SID> to "destination/<dump transaction name>"

/>go

and after that my issue is resolved.

Thanks,

Gopal Tamrkar

Re: JCMON does not start

anosh_syed — Mon, 15 Jun 2015 09:03:15 GMT

Hi Gopal,

Can you please explain me clearly, How you resolved this issue?

Actually i was facing the bellow issue

Can't open shared memory administration (rc = 3)

Later i used "jcontrol pf=SM1_DVEBMGS00_sapnw02 -c" this command.

Now, when i open jcmon its showing bellow error

Can't access instance data (rc = 4 object not found)

Please help me.

Regards,

Anosh.

Re: JCMON does not start

Former Member — Mon, 15 Jun 2015 10:10:20 GMT

Hi Anosh,

I was using sybase database. So I have released the space for transaction logs and archive logs by using the above script. Do the same according your database.

Best Regards,

Gopal Tamrkar