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Tuesday 11 November 2014

Creating onetime EM agent Registration Password in 12C & OMS Unreachable issue fixed



Creating a onetime agent Registration password & OMS Unreachable issue fixed


While working on the issue with the agent in one of the Linux box. it prompts for the Agent Password which i don't have. As i couldn't get the password from my inventory list, I have created instant agent one time registration password.

The below are the steps i followed.

    Login to the OEM 12C with sysasm credentials

    Setup à Registration Passwords. This will direct you for the security page.






     Select <Initial Agent Registration Password> and click on the Add Registration Password  window.
         
       




        In the Add Registration Password page, enter the password and select the one-time password button and set the expire Date.

     


     
      Now my one time Agent Registration password has been set. 

      Then, i logged into the Linux box where EM Agent was not able to communicate with OMS Server and Heartbeat status: OMS Unreachable.

       
       The below are the commands and output copied as it is from the server

       cpliadea:/u01/app/oracle/product/agent12c/agent_inst/bin> ./emctl pingOMS
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
EMD pingOMS error: Received Key Mismatch from OMS

Steps followed to fix the issue

cpliadea:/home/oracle> emctl stop agent
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
Stopping agent ..... stopped
cpliadea:/u01/app/oracle/product/agent12c/agent_inst/bin> ./emctl secure agent
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
Agent is already stopped...   Done.
Securing agent...   Started.
Enter Agent Registration Password : ( "Here i have given the agent Registration password which we created earlier")
EMD gensudoprops completed successfully
Securing agent...   Successful.
cpliadea:/u01/app/oracle/product/agent12c/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 ........................................................................................................................... started but not ready.
cpliadea:/u01/app/oracle/product/agent12c/agent_inst/bin> ./emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
Agent Version     : 12.1.0.2.0
OMS Version       : (unknown)
Protocol Version  : 12.1.0.1.0
Agent Home        : /u01/app/oracle/product/agent12c/agent_inst
Agent Binaries    : /u01/app/oracle/product/agent12c/core/12.1.0.2.0
Agent Process ID  : 4576
Parent Process ID : 4455

---------------------------------------------------------------
Agent is Running but Not Ready
        

Agent is Running but not ready, did a clearstate agent and upload the xml files. 

cpliadea:/u01/app/oracle/product/agent12c/agent_inst/bin> emctl clearstate agent
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
EMD clearstate completed successfully
cpliadea:/u01/app/oracle/product/agent12c/agent_inst/bin> ./emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
Agent Version     : 12.1.0.2.0
OMS Version       : 12.1.0.2.0
Protocol Version  : 12.1.0.1.0
Agent Home        : /u01/app/oracle/product/agent12c/agent_inst
Agent Binaries    : /u01/app/oracle/product/agent12c/core/12.1.0.2.0
Agent Process ID  : 4576
Parent Process ID : 4455
Agent URL         : https://cpliadea.homedepot.com:3872/emd/main/
Repository URL    : https://oem-np.homedepot.com:4900/empbs/upload
Started at        : 2014-10-15 00:20:32
Started by user   : oracle
Last Reload       : (none)
Last successful upload                       : 2014-10-15 00:28:52
Last attempted upload                        : 2014-10-15 00:28:52
Total Megabytes of XML files uploaded so far : 5.28
Number of XML files pending upload           : 229
Size of XML files pending upload(MB)         : 0.82
Available disk space on upload filesystem    : 93.06%
Collection Status                            : Collections enabled
Heartbeat Status                             : Ok
Last attempted heartbeat to OMS              : 2014-10-15 00:28:11
Last successful heartbeat to OMS             : 2014-10-15 00:28:11
Next scheduled heartbeat to OMS              : 2014-10-15 00:29:12

---------------------------------------------------------------
Agent is Running and Ready
cpliadea:/u01/app/oracle/product/agent12c/agent_inst/bin> ./emctl upload agent
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
EMD upload completed successfully
cpliadea:/u01/app/oracle/product/agent12c/agent_inst/bin> ./emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
Agent Version     : 12.1.0.2.0
OMS Version       : 12.1.0.2.0
Protocol Version  : 12.1.0.1.0
Agent Home        : /u01/app/oracle/product/agent12c/agent_inst
Agent Binaries    : /u01/app/oracle/product/agent12c/core/12.1.0.2.0
Agent Process ID  : 4576
Parent Process ID : 4455
Agent URL         : https://cpliadea.homedepot.com:3872/emd/main/
Repository URL    : https://oem-np.homedepot.com:4900/empbs/upload
Started at        : 2014-10-15 00:20:32
Started by user   : oracle
Last Reload       : (none)
Last successful upload                       : 2014-10-15 00:29:34
Last attempted upload                        : 2014-10-15 00:29:34
Total Megabytes of XML files uploaded so far : 6.11
Number of XML files pending upload           : 0
Size of XML files pending upload(MB)         : 0
Available disk space on upload filesystem    : 93.06%
Collection Status                            : Collections enabled
Heartbeat Status                             : Ok
Last attempted heartbeat to OMS              : 2014-10-15 00:29:12
Last successful heartbeat to OMS             : 2014-10-15 00:29:12
Next scheduled heartbeat to OMS              : 2014-10-15 00:30:12

---------------------------------------------------------------
Agent is Running and Ready



Now the EM agent is up and running fine and all XML files are uploading to the OMS server with no issues.