In my previous post, I tried to show how to install Enterprise Manager Cloud Control 12c, now I’ll show how to add target hosts to our Enterprise Manager system. I assume that you’re in a similar position (installed Cloud Control but haven’t added any target yet).

As you know, we have to install Oracle Management Agent to the targets to be able to manage them via our Enterprise Manager. In OEM Cloud Control 12c, we can “Add Host Targets Wizard” which is accessible from the web interface. We can manually enter required information of host or we can use auto-discovery method.

If we’ll use auto discovery, we need an active agent to discover targets in network. This agent can scan local services or network. “Nmap” is used for scanning network. Nmap requires root privileges to be able to use raw sockets for “Syn Scanning” (a method to detect open ports through firewalls). So we need to configure “privilege delegation” in the host of our agent (which we’ll use for scanning).

Click “setup”, “security” and then “privilege delegation”.

Currently I have only one active agent (it’s the agent installed on OEM Cloud Control server), so I’ll configure privilege delegation for it. Click “edit”.

Select “sudo”, enter “/usr/bin/sudo -u %RUNAS% %COMMAND%” as sudo command. Click update. So we said that this host supports sudo for privilege delegation but in fact, we haven’t configured sudo yet. Connect to the host (in this case it’s our cloud control server), edit /etc/sudoers file, put remark sign before “Defaults requiretty” add a user (i.e. oracle):

As soon as you save the changes, oracle will be added to sudoers and be able to run commands as root with sudo. Now we’re ready to discovery new hosts using this host.

Click “setup”, “add target” and then “configure auto discovery”.

Click “configure” to set up IP scanning.

Click “create” to create a new search.

Click “add” to add agents which we’ll use for scanning.

Select the agent(s) for scanning. So you can use multiple agents to scan networks faster.

Enter the target IP subnet and then click job details.

Select “new” to be able to enter credentials of the user you added as sudoer, this information will be saved so you can use it later. You can give a meaningful name for it. Click “save and submit IP scan”.

Search job will start immediately. You can click “refresh IP scan results” to refresh the results. When it’s done we can check the auto discovery results page.

Click “setup”, “add target” and then “auto discovery results”. We see that new discovered hosts as – Unfortunately there’s no DNS in my virtual network so IP address couldn’t be resolved. I could add this host to /etc/hosts file of my cloud control to see its name instead of its IP. Click over the host name and then click “promote”.

Select the correct agent and click next.

Enter the installation directory for the agent. It says this directory will be created but don’t forget the user should be able to create this directory. For example, “oracle” user can not create a directory in root partition so I created “/oracle” directory and give ownership to “oracle” user in target server before I start deploying the agent. Click “plus” button to enter new credentials.

Enter the credentials to install agent. Do not forget to add “oracle” user to sudoers on target server like we did on cloud control server! As I see Oracle Enterprise Linux 5.5 has /usr/bin/sudo but Cloud Control’s default sudo location is /usr/local/bin/sudo so change the privileged delegation setting according to the location of sudo.

Click “deploy agent” to start installing Management Agent to target server.

Wait until agent is deployed.

Here we can see the new host.

If you don’t want to use auto discovery, you can add hosts manually. Click “setup”, “add target”, “add targets manually”, then click “add host”.

Click “add” button to enter hostname (or IP) of the target server you want to add. Select the platform and click next.

Next steps are same with adding “discovered targets”, you enter the location to install agent, enter the credentials then click next.

Review the settings click “Deploy Agent” to start the installing agent to the target server. As usual, you should configure sudo in target system.

91 Responses to “How to Deploy Oracle Management Agent 12c”

  1. Francisco says:

    I getting the following error while submitting configure auto discovery schedule

    error while loading shared libraries: cannot open shared object file: No such file or directory

    • Gokhan Atil says:

      Fransisco, if you use Enterprise Manager Cloud Control 12c without Patchset 1, make sure that OpenSSL 0.9.7 is installed. SUDO should be also correctly installed and configured.

      • Francisco says:

        Hi Gokhan – In our company we don’t have the oracle password we login to the server with our id and then sudo to oracle. Can we use other user on the named credentials to install agents on host ?

  2. Hi There

    I get the following error after an instance was added to EM12c.

    IO Error: Socket read timed out. it is not showing me the detail of the database.

    any idea what can be causing this?

    • Gokhan Atil says:

      Shaun, I haven’t came accross this error before. Somehow, your agent couldn’t communicate with your database. Please check your listener.

  3. Hii
    I faced at the last step of deployment of agent an error unable to secure agent .
    Error message =unavailable
    Please run manually the below commands.
    emctl secure agent
    emctl start agent
    emctl config agent addinternaltargets

    And when i run them manually it says :

    Agent successfully restarted… Done.
    Securing agent… Failed.

    And if i type :
    emctl unsecure agent

    It succeseed

    Whats wrong please help ??

    • Gokhan Atil says:

      Mohab, please check logs – make sure that your target server can access OMS (no firewall blocks connection) and double-check the agent registration password.

  4. suresh says:

    12c Agent deploy from oem12c is not possible due to security reason. Do we have other option . I have copy the oem12c software to target machine where i have to install 12c agent.
    but when i kick runInstaller and passed few step but i didn’t feel it doing agent installation it seems oem install.
    could you help how to install agent12c . not from oem12c grid page. security reason sudo/ssh is disbled.

  5. Hi, I have install 12c Grid on Linux box and need to install agent on HP-AUX box. Can we do the cross platform installation.

  6. while i try to deploy OMS, I got this below errors during Remote prerequists check

    The user “oracle” does not have the privileges to run shell “/bin/sh” as user “root” using the Privilege Delegation tool “/usr/bin/sudo” .

    How do i fix this error?

    I added the below entry in /etc/sudoers

    #Defaults requiretty
    root ALL=(ALL) ALL
    oracle ALL=(ALL) ALL

    • Gokhan Atil says:

      Hi Mohamed,

      First, please check if sudo is located in /usr/bin/sudo – “which sudo” command helps. Secondly, try to add this one to your sudoers:




  7. hi,
    could you please advise how could we deploy new agent manually , so to add new target manually?

    thank you

  8. Ron Gordon says:

    Hi Gokhan, just wanted to say this is one of those few blogs which actually solved my issue, was well written, lots of pretty pictures and a good description which goes with the screen shots (I needed oracle “ALL=(ALL) ALL” in /etc/sudoers but I only had “USER_BE_ORACLE ALL=NOPASSWD: BE_ORACLE” in the file). Good work and thanks.

  9. Dear Gokhan,
    i’m getting the following Error while deploying a new agent on HP-UX server:

    Execution of command /u01/app/oracle/Agent12c_software/ADATMP_2012-09-12_14-24-43-PM/ -ignorePrereqs ORACLE_HOSTNAME= AGENT_BASE_DIR=/u01/app/oracle/Agent12c_software EM_UPLOAD_PORT=4904 AGENT_INSTANCE_HOME=/u01/app/oracle/Agent12c_software/agent_inst b_doDiscovery=false b_startAgent=false b_forceInstCheck=true AGENT_PORT=3872 2>/u01/app/oracle/Agent12c_software/ADATMP_2012-09-12_14-24-43-PM/logs/install.err 1>/u01/app/oracle/Agent12c_software/ADATMP_2012-09-12_14-24-43-PM/logs/install.log on host Failed

    Error Message:Not Available

    Exit Code :1

    and the log(/u01/app/oracle/Agent12c_software/ADATMP_2012-09-12_14-24-43-PM/logs/install.log) contain the below message:

    -e Validating the OMS_HOST & EM_UPLOAD_PORT
    Executing command : /u01/app/oracle/Agent12c_software/core/ -classpath /u01/app/oracle/Agent12c_software/core/
    ware/core/ oracle.sysman.agent.installer.AgentInstaller /u01/app/oracle/Agent12c_software/core/ /u01/app/oracle/Agent12c_software/ADATMP_2012-09-12_14-
    24-43-PM /u01/app/oracle/Agent12c_software -prereq
    Error occurred during initialization of VM
    java.lang.Error: Permission denied
    at java.lang.System.initProperties(Native Method)
    at java.lang.System.initializeSystemClass(

    -e Validating the OMS_HOST & EM_UPLOAD_PORT has failed

    Any idea please

    Thank You

    • Gokhan Atil says:

      It looks like there’s a problem with the file/directory permissions but I have no experience on HP-UX so I prefer not make any educated guesses. I think it could be better if you open a service request to Oracle.

  10. Hi
    Nice work. Thanks. I get this error after I submit the job.

    Output Log

    Host discovery job failed. Remote Operation Exception: exception occurred executing job step
    I can ping back and forth between the Agentless Target Host & my OMS. sudoers in both servers look good.

    Couldnt locate any help with the above message. Can you suggest?
    Many thanks

  11. Hi Gokhan
    Any suggestion? NMAP of the target host from OMS server just came back fine too. I can send you the agent log if needed.

    I am trying the Manual Agent Deployment now.
    But just want to make sure I can do the Auto Discovery too.


    • Gokhan Atil says:

      Hi KJ,

      I have examined the logs you sent and I think it could be a bug. Please open a service request to Oracle.

  12. Thanks. Will do . Appreciate your time.

  13. Gokhan Atil says:

    Satish, you must install cygwin to enable ssh service. Please check:

  14. Yes Gokhan, After I googled finally I have installed the cygwin and successfully deployed the agent on windows..

    Now facing another problem while deploying the agent in aix server, however already I have successfully deployed the agent in another aix server.

    Presently I am getting below error while deploying the 12c agent in aix server

    Secure Agent Execution of command /oracle/app/12c_Agent/agent_inst/bin/emctl start agent on host hostname.domain.local

    Failed Error Message:Not Available

    Exit Code :1

    Fix the cause of the error and retry the operation (or) manually run the following commands on the remote host
    /oracle/app/12c_Agent/agent_inst/bin/emctl secure agent
    /oracle/app/12c_Agent/agent_inst/bin/emctl start agent
    /oracle/app/12c_Agent/agent_inst/bin/emctl config agent addinternaltargets


    So manually I tried to run the above commands, Successfully I ran the first command “emctl secure agent”
    but while running 2nd command “emctl start agent” i am getting below error..

    /home/oracle->/oracle/app/12c_Agent/agent_inst/bin/emctl start agent
    Oracle Enterprise Manager Cloud Control 12c Release 2
    Copyright (c) 1996, 2012 Oracle Corporation. All rights reserved.
    Starting agent ………….. failed.
    HTTP Listener failed at Startup
    Possible port conflict on port(3872): Retrying the operation…..
    Failed to start the agent after 3 attempts. Please check that the port(3872) is available.
    Consult emctl.log and emagent.nohup in: /oracle/app/12c_Agent/agent_inst/sysman/log

    Please let me know if you have any idea about this error message..

    Thank you very much for you blog and your help..

    Satish Kumar Sadhu

    • Hi Gokhan, I have resolved the issue by removing the target servers domain name in /etc/hosts on OMS server. in fact Hostnames for hosts in local /etc/hosts and remote /etc/hosts don’t match exactly, extra domain name is there in oms server, but it was pinged with host name from target and oms…
      Any how I have resolved the issue.. now i have added all my target database in grid control..

      Thanks a lot for your blog.

      Satish Kumar Sadhu

  15. Hi Gokhan

    Thanks for the wonderful post, Ive followed every step and got Grid running

    I have a problem deploying agents though…

    I get this:

    Error Message: Home Dependencies Location:/u01/app/grid_agent_home/core/ Update home dependency failed.

    Exit Code :1

    Execution of command /u01/app/grid_agent_home/ADATMP_2012-11-01_13-03-23-PM/ -ignorePrereqs ORACLE_HOSTNAME=[hostname.domain] AGENT_BASE_DIR=/u01/app/grid_agent_home OMS_HOST=[hostname.domain] EM_UPLOAD_PORT=4901 AGENT_INSTANCE_HOME=/u01/app/grid_agent_home/agent_inst b_doDiscovery=false b_startAgent=false b_forceInstCheck=true AGENT_PORT=3872 on host [hostname.domain] Failed


    SEVERE: ERROR: Update home dependency failed.
    SEVERE: ERROR: Agent Deployment Failed

    This is on OEL x64, no sudo option was taken as root scripts would be run manually after the install

    Am I missing anything?

    Thanks in advance

  16. Hi There

    looking for some help i installed a new oracle oem 12c on a server i have agent 12cr1 installed on our dev server that still has the old Repository URL :

    How do i configure the angent to get the to get the show the new Repository URL

    • Gokhan Atil says:

      Do you want your agent connect to your new OEM 12c? Why don’t you just uninstall the old agent (as I see its version is also different than OEM server), and install new one?

  17. Dear Gokhan,

    I have installed the 12c grid control on OEL6.3 and deployed agents for all of our databases which are running on AIX,Windows,Linux and added all our databases in grid control. But due to some reasons my grid server was crashed, So again I have installed the 12c grid control on OEL6.3 So Now I need to uninstall the agents in all of our target servers and needs to deploy again? or do we have any way for adding those databases in my new grid control with out uninstalling and install the agents on target servers

    Please let me know, what can i do now

    Thanks & Regards,
    Satish Kumar Sadhu.

  18. Hi Gokhan,

    I’m getting error
    ERROR: NMO not setuid-root (Unix-only)
    when going to submit IP scan..
    Can you pls shade some light on the problem..

  19. Francisco says:

    Hi Gokhan – Thank you for the reply. I still not clear at this deployment. Is the new user sudo to oracle and install the agent as oracle or the owner of the agent will be the new user ?

  20. Francisco says:

    What should I enter on the sudoer file if I want to use oinstaller instead.

    • Gokhan Atil says:

      If you want to give sudo permission to users in group “oinstall”, you need to enter the following line to sudoers file:

      %oinstall ALL=(ALL) NOPASSWD:ALL

  21. Hi Gokhan,

    When I start up repository database, webtier and OMS, everything is up and okay. But when I open the emlink to start those steps the status shows that there are no data available.
    Please let me know what can I do. Thanks!

    • Gokhan Atil says:

      Nikki, is the listener of repository database up? Have you tried to connect your repository database through tns (ie sqplus sys@repositorydb)?

  22. Hi again. yup,repository listener and its db is up. tns is also working. When checking EM all-targets page, the target status of both host and agent are “metric collection error”? what does it mean?

    thanks for your help.

  23. Hi Gokhan,

    I successfully managed to deploy agent with the help of this blog seriously t help me alot.
    One quick doubt can you provide a link or doc where i can find steps to add database to my enterprise grid control 12c.

  24. Hi, Thanks for your wonderful article. It did help me sort out adding agent to EM console. We have one IBM AIX system that has no ssh installation. Is there a way I could install the agents? I appreciate your answer.

  25. Hello

    I am getting the below error message while deploying the agent -

    $ /tmp/

    Cloning the agent home…
    Executing command: /opt/webapps/Agent12C/core/ -ignoreSysPrereqs -clone -forceClone -silent -waitForCompletion -nowait ORACLE_HOME=/opt/webapps/Agent12C/core/ AGENT_BASE_DIR=/opt/webapps/Agent12C ORACLE_HOSTNAME=XXXXXX AGENT_BASE_DIR=/opt/webapps/Agent12C EM_UPLOAD_PORT=1159 AGENT_INSTANCE_HOME=/opt/webapps/Agent12C/agent_inst b_doDiscovery=false b_startAgent=false b_forceInstCheck=true AGENT_PORT=3872 -noconfig ORACLE_HOME_NAME=agent12c1 -force b_forceConfigure=true b_noUpgrade=true
    Clone Action Logs Location:/usr/users/obieeadm/OBIEE6/oraInventory/logs/cloneActions.log
    ERROR: Agent Clone Failed

    • Gokhan Atil says:

      Jai, I shorten your message and removed the host names. It seems everything went fine until copying the agent files.

      Have you check the cloneActions.log file?

      Have you checked MoS ID 1505064.1? It says the temp directory may be full.

  26. Hello Gokhan

    The Agent is installed manually but the targets including the Agents and Hosts are even not available on the OMS console.

    Like in case of OMS 11g/10g we normally run the agentca -d command to discover all the targets.

    What is a process in OEM – 12C in case we have to discover a target even after installation of OEM Agent 12 C.

    Thank You !!


  27. Hi,

    I have changed the IP on a host Server. Now I need to configure it in the Cloud Control 12c. How do I do that? Since the Status is now Agent Unreachable…

  28. Hi Gokhan,

    Thanks for sharing your comprehensive guide. However, I do see this problem and hope you can help me. What do you think is the issue here and why am I getting this error? I can’t seem to find anything on Oracle support or Google.

    Host discovery job failed while creating scan command. Exception: At least one of the values of OS, Architecture and Version can not be obtained for Agent emdUrl = “https://oem12c:3872/emd/main/”.

  29. kamarudeen says:

    Dear Gokhan,

    we are in process of oem 12c agent installation in oracle solaris platform. As per our security reason, not able to do installation through oem wc.
    We have agent software. please clarify my doubts.
    1. Can we install agent software in silent mode?
    2. What are steps needs to be follow to achieve that?


    • Gokhan Atil says:

      Hi Kamarudeen,

      You can use agentdeploy script or agentpull method. I’ll blog about agentpull method in a couple of days. You can check my blog post explaining how to use agentdeploy script.



  30. MADHAV says:

    Dear Gokhan,
    Thanks a lot for such a clear cut method.
    But I’m facing a issue, once I give the credenatils for the “oracle” user created in /etc/suders file and in the console when it asks for the password, i gave a general(not previously used) password.

    After this when I click “test” tab,

    it shows the below error

    Error :Authentication failure, check credential properties

    Can you please let me know, how do i overcome this?

    • Gokhan Atil says:

      Madhav, when it asks for the password, you should enter the actual password of “oracle” user. It doesn’t ask for a new password.

  31. MADHAV says:

    Hi Gokhan,

    I have no user named oracle in my repository.The user with OEM(oms was installed) was “oraoem”. I entered the oraoem user in the /etc/suders file and gave the password, when asked.
    Still its is not of nay help.
    Please let me know , what I’m missing.


    • Gokhan Atil says:

      Madhav, could you check “12c: Setting Named Credentials – Test Failed. Authentication failure, Check credential properties [ID 1511538.1]“?

  32. Paolo says:


    Oracle Enterprise Manager Cloud Control 12c. How can I view the IP of the of hostnames on the Targets -> Host? Also, I added a host via IP, can I change that to DNS once I added it to Cloud Control?


  33. Luke Xu says:

    Hi Gokhan,

    Recently, I installed OEM12c on Windows 2008R2(x64) using the following steps:

    (1). Install Oracle Database Software Enterprise Edition (64bit).

    (2). Create LISTENER via NETCA

    (3). Create OEM Repository Database via DBCA using ‘Database Template (with EM repository pre-configured) for Installing Oracle Enterprise Manager Cloud Control 12c Release 2 Plug-in Update 1 (’.

    (4). Installed OEM12c ‘Oracle Enterprise Manager Cloud Control 12c Release 2 Plug-in Update 1 (’ successfully which includes OMS, Agent, Repository, Management Plug-ins.

    (5). Deployed ‘Management Agent’ to another server after installing Cygwin on target.

    After I login to OEM console, I could add another server as ‘managed target’ as ‘host’ type.

    I was also able to discover the databases on the target and turned them into managed targets.

    I do not understand why I could not turn OMS server into ‘managed target’ as ‘host’ type.

    I also have some other small databases running on OMS server. I could not manage those databases as ‘managed targets’.

    Is there Windows version issue? Please advise.



  34. kamarudeen says:

    Hi Gokhan,

    Nice document. Recently we added agent in one of our developement database through silent mode and we configured the database with oem successfully.

    When i selecting our db from target ->database page in OEM console,

    I got blank page after showing this “connecting to target database” .

    Is there any idea about this?

    Our OS  env is “SUN SOLARIS”.





  35. deepthi says:


    while I am doing  agent deployment . Initiation process is taking really long time it will run more than 2 hours. I just cancel that .do you have any idea .please let me know if you have a solution.



    • Gokhan Atil says:

      Deepthi, network connection and hardware resources (cpu/ram/io speed) of the OMS and target server may affect to deployment processes.

  36. Omkar Sunkersett says:

    Hi, I have installed OEM12c cloud control on a host oem12c and am unable to deploy the agent to the remote host. The SSH port is 22 in sshd_config for both hosts and the PasswordAuthentication is “yes” too. The firewalls are disabled on both the hosts. The SSH_PORT parameter is 22 in the file too.

    Remote validation fails while deploying the agent. Please advise.

    • Gokhan Atil says:

      Omkar, as I see it can not connect through ssh and gets timeout. Timeout problems are usually related with firewall. Open terminal window on om12c, try to connect to inux.virtualmachine using SSH.

  37. Zishan says:


    I have installed 12c on windows 64 bit. I am trying to deploying agent but got the following message:

    SSH daemon (sshd) is not running on port “22″

    Any idea why ? and what I need to do ?



  38. Dear Gokhan,

    I Installed OEM 12C on OEL 6.2 but i have a problem i cant deploy the agent.

    Can I do it manually ? without pushing them via the OEM interface.

    I had download AIX and LINUX agent via the interface and when i tried to push those agent after i did the autoDiscovery wich is working good for my server. I have an error :/

    # You do not have permission to write to or create the central invertory on the system

    #L’indicateur “requiretty” étant défini dans le fichier sudoers sur l’hôte distant, l’utilisateur ne pourra pas exécuter sudo sur SSH.

    Any idea how can i resolve this probleme please ?

    Thank you;



  39. Pedro de Paula says:

    Hi Gokhan, hi all.

    Do you have a list with the most important commands?

    For security reasons I can’t give ALL commands to oracle user in sudoers.

    I know that list can be huge and its depends on which OS we are running (in my company we have all of them), but if you have any list I’ll have something to ask to my OS team.

    Thanks in advance.

    Pedro de Paula

  40. Omkar Sunkersett says:

    Whenever I try setting the privilege delegation thing in OEM, I click update and then the setting does not reflect. The host is configured with privilege delegation too. This is a weird bug. How do I manually edit some file to set up privilege delegation?

  41. Hi!I would be very appreciated if you could tell about necessity to have sudo to root on everyday basis from agent installation user, or can it be revoked after installation is finished?. Does agent uses it for collecting OS statistic and so on?

  42. This is a little off topic, but I am banging my head on a wall. I am trying to setup named credentials. I have selected host credentials for the type. I am using an ldap account for the credentials. I know that ssh is working for the ldap account to the machines that I manage. But when I do a test and save it fails and asks to check the credential properties. I have done a tail of the secure log file on one of the servers and it does not look like it is trying to use ssh to do the connection. I am not sure what I am missing.

  43. Gokhan,

    I am having a problem starting my agent on our new Audit Vault server on Oracle Linux.  When installing, all prereqs etc pass.  Installation is successful.  When starting I get the “HTTP listener failed to start port conflict” error.  I change the post the agent uses – same issue.  In emagent.nohup I get these errors:  —– Thu Sep 26 15:51:21 2013::7237::Generating openfiles report in /var/lib/oracle/agent12c/agent_inst/sysman/log/lsof_7308 —–
    —– Thu Sep 26 15:51:21 2013::7237::Generating netstat report in /var/lib/oracle/agent12c/agent_inst/sysman/log/netstat_7308 —–
    —– Thu Sep 26 15:51:21 2013::7237::Generating all host processes report in /var/lib/oracle/agent12c/agent_inst/sysman/log/allprocesses_7308 —–
    —– Thu Sep 26 15:51:21 2013::7237::Exiting watchdog loop
    —– Thu Sep 26 16:00:56 2013::3988::Checking status of EMAgent : 4038 —–
    —– Thu Sep 26 16:00:56 2013::3988::EMAgent exited at Thu Sep 26 16:00:56 2013 with signal 9 —–
    —– Thu Sep 26 16:00:56 2013::3988::EMAgent has been forcibly killed. —–
    —– Thu Sep 26 16:00:56 2013::3988::Stopping other components. —–
    —– Thu Sep 26 16:00:56 2013::3988::Commiting Process death. —–
    —– Thu Sep 26 16:00:56 2013::3988::Exiting watchdog loop
    — EMState agent
    —– Thu Sep 26 16:01:11 2013::10178::Auto tuning the agent at time Thu Sep 26 16:01:11 2013 —–
    —– Thu Sep 26 16:01:12 2013::10178::Finished auto tuning the agent at time Thu Sep 26 16:01:12 2013 —–
    —– Thu Sep 26 16:01:12 2013::10178::Launching the JVM with following options: -Xmx128M -server -Dsun.lang.ClassLoader.allowArraySyntax=true -XX:+UseLinuxPosixThreadCPUClocks -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:+UseCompressedOops —–
    —– Thu Sep 26 16:01:12 2013::10178::Agent Launched with PID 10222 at time Thu Sep 26 16:01:12 2013 —–
    —– Thu Sep 26 16:01:12 2013::10222::Time elapsed between Launch of Watchdog process and execing EMAgent is 2 secs —–
    2013-09-26 16:01:13,194 [1:main] WARN – Missing filename for log handler ‘wsm’
    2013-09-26 16:01:13,204 [1:main] WARN – Missing filename for log handler ‘opss’
    2013-09-26 16:01:13,205 [1:main] WARN – Missing filename for log handler ‘opsscfg’
    —– Thu Sep 26 16:01:46 2013::10178::Checking status of EMAgent : 10222 —–

    I have installed agents using this OMS many times and have not encountered any problems.  Any ideas?


  44. And in emctl.log this message appears hundreds of times:

    15404 :: Thu Sep 26 15:11:50 2013::Found Msg file with: {1380208297679,running}
    15404 :: Thu Sep 26 15:11:50 StartCEMD Querying for the real status of the agent

  45. I’ve an identical problem:

    (DispatchRequests emdctl=>[137725209040001])] WARN – Missing filename for log handler ‘wsm’
    (DispatchRequests emdctl=>[137725209040001])] WARN – Missing filename for log handler ‘opss’
    (DispatchRequests emdctl=>[137725209040001])] WARN – Missing filename for log handler ‘opsscfg’

    I tried to apply solution indicated in 1499736.1 MOS Note,  but cannot find problematic agent in pugin deploy window.

    Jeff, if you solved, please write how you do it.






  46. Hi,

    Thank you for the great blog. I wonder if you can help me. We want to clone our OVM environment that hosts around 40  servers managed by OEM 12c. Now my question is with all the IP addresses changing on the servers, what will I need to do to the agents? Is it necessary to uninstall and redeploy or is there a script I can use to update the IP address.

    Thank you for your help.

  47. Gokhan I got below error when I click “SUDO”



    Unexpected error occurred. Please contact Oracle Support with these files.


  48. Antonio:  I’m sorry I did not solve it.  I did a full uninstall and then reinstalled and it worked.  I don’t know why.  I don’t think Gokhan is answering this blog anymore as he hasn’t commented since July.  Sorry I can’t help.

  49. Aman Vats says:


    I am getting the following error
    Sudo Run As Root privileges are required for Host Discovery. Specify appropriate credentials
    when I proivide new credentials and try to save and submit Ip scan.
    The username used is oraclone and its entry is also provided in /etc/sudoers file. but still iam facing the issue.
    Please help.


  1. How to Add RAC Databases to Enterprise Manager Cloud Control 12c | Gokhan Atil's Oracle Blog - […] how to add a RAC Database? First of all, we need to deploy agents to all nodes. you can …

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