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EM 13c : Connection from Enterprise Manager 13c Cloud Control Agent to AOM Fails with Error: unable to connect to http server [handshake has no peer] (Doc ID 2790191.1)

Last updated on NOVEMBER 14, 2021

Applies to:

Enterprise Manager Base Platform - Version and later
Information in this document applies to any platform.


In Enterprise Manager (EM) 13c Cloud Control, after configuring Always On Monitoring, generates the following errors:

From <AGENT_BASE>/agent_inst/sysman/log/gcagent.log:

2021-06-09 11:44:10,875 [76:9FC136A7:GC.SysExecutor.3 (Ping OMS)] INFO - attempting another heartbeat
2021-06-09 11:45:02,217 [58:725F9857] WARN - Communication error with URL = https://<AOM_agent_name>:8081/upload/upload
oracle.sysman.emSDK.agent.comm.exception.VerifyConnectionException: unable to connect to http server at https://<AOM_agent_name>:8081/upload/upload. [handshake has no peer]
  at oracle.sysman.gcagent.comm.http.ClientConnection.verifySecureConnection(
  at oracle.sysman.gcagent.comm.http.ClientConnection.makeConnection(
  at oracle.sysman.gcagent.comm.http.OMSConnection.(
  at oracle.sysman.gcagent.upload.UploadConnection.(
  at oracle.sysman.gcagent.upload.comm.OnPremiseUpload.establishConnection(
  at oracle.sysman.gcagent.upload.comm.OnPremiseUpload.(
  at oracle.sysman.gcagent.upload.UploadStream$dequeuer.createOnPremiseUpload(
  at oracle.sysman.gcagent.upload.UploadStream$dequeuer.xferFile(
  at oracle.sysman.gcagent.upload.UploadStream$dequeuer._run(
  at oracle.sysman.gcagent.upload.UploadStream$
  at java.util.concurrent.ThreadPoolExecutor.runWorker(
  at java.util.concurrent.ThreadPoolExecutor$
  at oracle.sysman.gcagent.util.system.GCAThread$
Caused by: handshake has no peer
  at oracle.sysman.gcagent.comm.http.BaseHttpsContext.verifyConnection(BaseHttpsContext.




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