While our symptoms are almost exactly the same, in our case we get the alert: Agent is unable to communicate with the OMS. In our case the time between getting the alerts on all our targets and having them resolve themselves is minimal (they alert and within a minute or two are back to normal) so we have been unable to investigate in this brief window. $ wget --no-check-certificate https://oracle-emrep1.ucdavis.edu:4904/empbs/upload. (REASON = Agent is Unreachable (REASON : Agent to OMS Communication is broken ). Strange fan/light switch wiring - what in the world am I looking at. ~Agent is unable to communicate with the OMS. and the result is the above statement, handat. filesystem : 46.30% Collection Status : "ERROR: column "a" does not exist" when referencing column alias, Indefinite article before noun starting with "the". Symptoms OEM Console -> Setup -> Manage Cloud Control -> Agents i have upload agent manually, restart agent, and clearstate, but it doesnt work . schwertner . Is it realistic for an actor to act in four movies in six months? i installed the agent using OEM 12c, first i installed 'self update' solaris for sparc x64. /oracle/product/agent/agent_13.1.0.0.0 Core JAR Location : Next scheduled heartbeat to OMS : 2020-01-25 11:00:25. Run deinstall.pl from your Agent_HOME to uninstall the existing Agent Software. 2 min read, 5 Jul 2021 i have add this step after decommision my solaris agent. Please perform the following from the Solaris target machine, It should give you an error message that explains why the target host is unable to communicate with the OMS and you can proceed from there with resolving the problem, (missing registration password, OMS is blocked, DNS entry missing, misconfigured OMS information, etc.). The best answers are voted up and rise to the top, Not the answer you're looking for? The communication between the Agent and OMS is straightforward. "EM_ECM_VCPU_JOB"" which is actually caused / observed after the 12.1.0.3 upgrade or some time seen in new install case as well. Host=doyen.local EM 13c: OMS Communication to all Agents Failing with " [handshake has no peer]" but Agents are able to Upload Successfully to the OMS (Doc ID 2381313.1) Last updated on JULY 28, 2021 Applies to: Enterprise Manager Base Platform - Version 13.2.0.0.0 and later Information in this document applies to any platform. Start the agent: /bin/emctl start agent, 4. i guess its normal, but when i try until step 4, emctl upload agent, i've got this. (REASON = Agent is Unreachable (REASON : Agent to OMS Communication is broken) - P.S At this time Neither OMS nor Agent went Down ! Patch 17066821 is not at all relevant to the issue you have described. Linux version 3.0.101-0.46-default (amd64) Number of Targets : 75 The /em/EMGC_OMS1/sysman/log/emoms.trc file reports errors such as below: Similar errors are seen for all the agents.- Third party certificates have not been configured at the OMS / agents, hence does not apply. Other notes that could be helpful to you are: How to troubleshoot ohs1 targets showing as down in the em12cc (Doc ID 1579334.1), EM12c Cloud Console Agent: Troubleshooting Guide for Agent Upload Issue. i have already reinstall this agent using that solution, but the agent still unreachable. (REASON = Agent is Unreachable (REASON : Agent to OMS Communication is brokenFailure connecting to https://oracle-emrep1.ucdavis.edu:4904/empbs/upload , err Connection refused ). Whereas it looks like Bill was getting a Connection Refused (instead of a peer not authenticated). But I can hardly name a few who knows how helpful client SSH configuration is. Some IT folks how are fluent with the server configuration of the SSH daemon. If the Agent(s) cannot communicate to OMS, this is a serious problem, as the Agents will continue collecting metrics, but it will be saved locally, unable to push it to OMS. OMS 13c - Agent is unreachable due to communication break between agent and the OMS (Doc ID 2534618.1) Last updated on AUGUST 22, 2019 Applies to: Enterprise Manager Base Platform - Version 13.2.0.0.0 and later Information in this document applies to any platform. i have search many solution but no one success.. IF so can you remove these targets ? 3. to: Clear /rm all the asociated files/directories. Target type=Host Then on your Target Agent Host (i.e. I know, a very weird situation. (REASON = Agent is Unreachable (REASON : Agent to OMS Communication is brokenFailure connecting to https://ares.ucdavis.edu:1159/em/upload , err -32 ). EM 13c: Agent Fails to Communicate with OMS after 3rd Party Certificate Import Showing Error: EMD pingOMS error: unable to connect to http server at [handshake has no peer] (Doc ID 2261426.1) Last updated on MAY 23, 2021 Applies to: Enterprise Manager Base Platform - Version 13.1.0.0.0 and later Information in this document applies to any platform. - The Cipher suite and TLS protocols set at the OMS and the agent match. As they say, time heals all wounds. Last successful heartbeat to OMS : 2020-01-25 10:59:25 This can be a Linux, Windows, or Solaris host, and typically (though not necessarily) there is 1 agent installed per host. To resolve this issue, navigate to each agent version 13c Release 2 BP3 or below and perform the following: 2./bin/emctl setproperty agent -name "SSLCipherSuites" -value "SSL_RSA_WITH_AES_128_CBC_SHA:SSL_RSA_WITH_AES_256_CBC_SHA:TLS_RSA_WITH_AES_128_CBC_SHA256:TLS_RSA_WITH_AES_256_CBC_SHA256:TLS_RSA_WITH_AES_128_GCM_SHA256:TLS_RSA_WITH_AES_256_GCM_SHA384:TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA:TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA:TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384:TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256:TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA:TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA:TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256:TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384:TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256:TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384", 3. But this is nothing to do with the Agent communication issue. and now i try to add my production database which based on solaris 10 u11, to be agent in my OEM CC 12c. Thanks in advance. Maybe it is time to create a Service Request for this issue. 1 min read, When you add a WebLogic Domain target to OEM, it automatically adds a number of : 2020-01-25 10:59:32 Last attempted upload : <AgentInstanceHome>/bin/emctl setproperty agent -name "SSLCipherSuites" -value . The administrator on the web console issues commands which is sent from OMS to the Agents on port 3872 and the Agents regularly/automatically upload their metric data to OMS through port 4903. Connect and share knowledge within a single location that is structured and easy to search. Can I change which outlet on a circuit has the GFCI reset switch? i have try step 2 in my linux server, and step 1, 3 and 4 in my solaris agent. Upon upgrade from 13c Release 2 to 13c Release 4 certain agent home pages display the following message: Communication between the Oracle Management Service to the Agent is unavailable. Sometimes we encounter this issue when we see that the agent communication to the OMS is broken, the agent is out of sync or its not able to upload data to the oms. in solaris, only agent_inst. If anyone has any ideas I would greatly appreciate hearing them. Start the OMS using The typical listen service is accessible at http://agenthost:3872/emd/main and is referred to as the Agent URL. and i can remove it use agent decomission. MaxClients 150 Agent is unable to communicate with the OMS. Sign up for an EE membership and get your own personalized solution. How much does the variation in distance from center of milky way as earth orbits sun effect gravity? https://xxxx:3872/emd/main/ Repository URL : The error we're seeing is: Agent is unable to communicate with the OMS. It's not Checking the 2-way communication between OMS and OEM Agent, Adding a new WebLogic Domain target to OEM, Removing a WebLogic Domain from OEM Cloud Control, See all 17 posts because i installed OEM CC 12c in my linux, and omshome is only in linux. This blog is to share the DBA knowledge for Oracle DBA beginners. All rights reserved. when you login to the agent server, you will see the agent is up and running but in the OEM console you will see the agent is unreachable.A couple of situations that lead to this issue are: -when the file system where the agent is installed is 100% full for a long time and agent is not able to gather or upload new information to the oms -when there is a network issue and agent is not able to upload new information to the oms -a server level blackout did not end gracefully etcEven if you resolve the underlying issue that has caused these situations, you will see that the agent sometimes is not able to establish the communication with OMS. (Doc ID 1556543.1), 12c Cloud Control: Understanding Agent Process Control (Start / Stop / Status) (Doc ID 1434343.1), 12c Cloud Control: Understanding OMS Process Control (Start / Stop / Status) (Doc ID 1432335.1), Enterprise Manager: Installation Requirements and a Checklist for Configuring and Testing Network Connections between EM Component Hosts (Doc ID 428665.1). after that, i install agent in solaris server using 'add target manually' in OEM. Verify is there any network connectivity issue from agent to OMS or vice versa ( if the issue is happening for specific agent) From agent host you can check if the following commands completed successfully. (REASON = Agent is Unreachable (REASON : Agent to OMS Communication is brokenSSL handshake failure between OMS https://vboddeti.local:4900/em/upload and Agent , err -10 ). Thanks Edited by: user10407423 on Nov 6, 2008 1:41 AM Answers rodneyli Member Posts: 1,667 Nov 6, 2008 9:45AM Yes logs are available both at agent and oms. If you want to confirm whether the communication from the Agent back to OMS is working, on the host running the Agent type emctl upload. SOLUTION. (REASON = Agent is Unreachable (REASON : Agent to OMS Communication is brokenError in request response, code = 400 , text = ). Collections enabled Heartbeat Status : Ok https://xxxx:4903/empbs/upload Started at : 2020-01-25 I am giving 3 different options to resolve this agent issue:Solution-1most of the time this solution works:cd /u001/oracle/product/agent13c/agent_13.4.0.0.0/bin./emctl stop agent./emctl clearstate agent./emctl start agent./emctl upload agentSolution-2if the solution-1 does not work then go ahead with this solution./emctl stop agent./emctl clearstate agent./emctl secure agent [agent registration password]if you forgot the registration password, you can always create a new one-time or persistent password by going to setup - security - registration passwords./emctl start agent./emctl upload agent./emctl pingoms./emctl verifykey./emctl status agentSolution-3if the solution-1 and 2 did not work then go ahead with this solution.Go to setup - manage cloud control - agentsselect the agent and block it with a reason like \"Temporary\"then go to the agent home page - Agent - ResynchronizationSo before you take a more drastic measure like reinstalling an agent, this is how you can re-establish the agent to oms communication and bring the agent online or in-sync with OMS. Severity= Unreachable Start Find target_guid for this target agent. /bin/emctl stop oms -all https://xxxx:3872/emd/main/ Local Agent URL in NAT : 10.25 Number of XML files pending upload : 0 Size of XML files pending upload(MB) : 0 Available disk space on upload I know that some communication problem, Hi! With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions. My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts. This error occurs for Agent versions 13c Release 2 BP3 or below. After an OMS upgrade to version 13c Release 4, older version agents running on SUNZFS storage devices will not be able to communicate with the OMS. Severity=Unreachable Start Stop the agent: emctl stop agent. So where you see omshome, you run those commands on your linux server and where you see agent_inst, you run those on your solaris box. 2020-01-25 10:59:32 Total Megabytes of XML files uploaded so far : $ wget --no-check-certificate https://oracle-emrep1.ucdavis.edu:4904/empbs/upload $ telnet oracle-emrep1.ucdavis.edu 4904 Thanks. Applications and Infrastructure Community, Consulting Member of Technical Team, SCP for Enterprise Manager. 4.) Back up the <>/gc_inst/WebTierIH1/config/OHS/ohs1/httpd.conf file and perform the following edit: ========== nmehlssl.cnmehlssl_readcb nmehl_read_sock timed out, As per MOS note 1559379.1,These alerts are due to the Bug 9546508, Sample Alert: Execute following commands from OMS server, $/OMS_HOM/bin/emcli login -username=SYSMAN, $/OMS_HOM/bin/emcli delete_target -name="" -type="oracle_emd" -delete_monitored_targets -async where is the value retrieved by the command: $/OMS_HOME//bin/emcli get_targets -target='%agentname%:oracle_emd', $/OMS_HOM/bin/emcli delete_target -name="previous_agentname:1835" -type="oracle_emd" -delete_monitored_targets -async. If OMS cannot communicate to the Agent, then you simply can't perform "management" activities. We are having exactly the same issue, 12.1.0.3, we've applied patch 17066821 but no resolution. This is the best money I have ever spent. can you tell me what i have to do? MaxClients 300 and I am trying to understand what is causing the problem. 2-way communication between OMS and Agent. (Doc ID 1554695.1), EM12c Agent: Troubleshooting Guide for Agent Communication Failures Like 'peer Not authenticated'. Hi BillW - did you ever resolve this? All rights reserved. Apparently Oracle Support didn't understand the problem. - From the OMS, attempting to verify the communication to the Agent url using the below command, also fails: - However, connection to the Agent URL works fine via the openssl command: The output indicates that there is no issue with the host name / IP address resolution or the access to agent port. Has natural gas "reduced carbon emissions from power generation by 38%" in Ohio? from: Any features or displayed information requiring this communication will be unavailable. 2. Determine whether the function has a limit. WebLogic Server, Oracle Coherence Cache, Email Driver, and so on. Occasionally I see flurries of messages from all of our monitored targets stating the following -. Looking at the gcagent.log file (it is too large to post) on the OMS server I see the following -, 2013-10-22 06:11:11,785 [24607:A4C14822] INFO - There was no change in dynamic properties for target [j2ee_application./EMGC_GCDomain/GCDomain/EMGC_OMS1/empbs$1945], 2013-10-22 06:11:55,025 [24603:237B90F9:GC.Executor.987 (oracle_apache:/EMGC_GCDomain/instance1/ohs1:Response)] INFO - Target [oracle_apache./EMGC_GCDomain/instance1/ohs1] is marked as in DOWN state, 2013-10-22 06:11:55,025 [24603:237B90F9] INFO - Target [oracle_apache./EMGC_GCDomain/instance1/ohs1] is marked as in DOWN state, 2013-10-22 06:11:55,151 [39:C09F1B94:GC.Upload[1]] WARN - Communication error with repository URL = https://oracle-emrep1.ucdavis.edu:4904/empbs/upload, 2013-10-22 06:12:40,441 [1:3305B9] INFO - Target Events are shutting down, 2013-10-22 06:12:40,442 [1:3305B9] INFO - Done: SHUTDOWN on Target Event Manager, 2013-10-22 06:12:40,443 [1:3305B9] INFO - Invoking SHUTDOWN (0) on CollectionItemTracker, 2013-10-22 06:27:19,301 [1:3305B9] INFO - Invoking STARTUP_P1 on Request Dispatcher, 2013-10-22 06:27:19,466 [88:E3AE5994:GC.Executor.3 (j2ee_application:/EMGC_GCDomain/GCDomain/EMGC_OMS1/empbs:Response)] INFO - Target [j2ee_application./EMGC_GCDomain/GCDomain/EMGC_OMS1/empbs] is marked as in DOWN state, 2013-10-22 06:27:19,474 [88:E3AE5994] INFO - Target [j2ee_application./EMGC_GCDomain/GCDomain/EMGC_OMS1/empbs] is marked as in DOWN state, In the gcagent.log file on target aporia (this information is reported on other monitored targets as well) I see -, 2013-10-22 06:11:19,355 [476:A1B91698] INFO - attempting another heartbeat, 2013-10-22 06:11:19,373 [476:A1B91698] WARN - Ping communication error, o.s.emSDK.agent.comm.exception.ConnectException [Failure connecting to https://oracle-emrep1.ucdavis.edu:4904/empbs/upload , err Connection refused], java.net.ConnectException [Connection refused], 2013-10-22 06:11:22,758 [76:673B8035:GC.SysExecutor.12 (AgentSystemMonitorTask)] WARN - Subsystem (Upload Manager) returned bad status of {+ Upload Manager: *Warning* +}. To resolve this issue, navigate to each agent version 13c Release 2 BP3 or below and perform the following: 1. Applications and Infrastructure Community, https://oracle-emrep1.ucdavis.edu:4904/empbs/upload. As a result, there's broken communication between the Non-13 c Release 4 Agents and the 13 c Release 4 OMS. Regards saikrishna 8/22/2022 - Mon. Symptoms Multi OMS environment, intermittently agents are failed to communicate with the OMS with following alerts / errors. Not exactly the question you had in mind? /oracle/product/agent/agent_inst Agent Log Directory : From your OEM 12c Console again crosscheck that no target entries for this host are existing after uninstallation. When agent starts-up up , it sends hearteat info /ping to oms (every min) , where its failing with message, B'coz agent is unable to reach oms : 2013-10-22 06:11:19,373 [476:A1B91698] WARN - Ping communication error o.s.emSDK.agent.comm.exception.ConnectException [Failure connecting to https://oracle-emrep1.ucdavis.edu:4904/empbs/upload , err Connection refused] java.net.ConnectException [Connection refused]. The issues for which you created SR 3-8348045141 on January 10 appear performance related. Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bi, I want the accept multiple solutions to be seen so that I can give points and close the question. What is the (tax) aquisition date for stocks aquired via merger? Based on this statement in the log '(oracle_apache:/EMGC_GCDomain/instance1/ohs1:Response)' I suspect that weblogic may be involved but at this point I am not sure where else to look or what else to look for. L'OMS se flicite de cette runion et de la communication publique d'informations sur la situation d'ensemble. SOLUTION: To work around this issue, upgrade the agents that used to communicate with storage filers to 13c Release 4 along with the 13c Release 4 OMS upgrade. We get it - no one likes a content blocker. 3.) The communication between the Agent and OMS is straightforward. On your OEM Console, can you see an targets for this solaris host ? These agents are from earlier versions than 13c Release 4 trying to communicate to a 13c Release 4 OMS. In Root: the RPG how long should a scenario session last? How can we cool a computer connected on top of or within a human brain? The administrator on the web console issues commands which is sent from OMS to the Agents on port 3872 and the Agents regularly/automatically upload their metric data to OMS through port 4903.
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