Monthly Archives: April 2014

OEM12C Agent is down – ERROR – Critical error: java.lang.OutOfMemoryError: Java heap space

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Another error spotted…
Agent is going down after a few minutes / hours.

2014-04-22 14:56:50,337 [40:54F9BB47:GCThread-11] INFO - uncaughtException handler with
java.lang.OutOfMemoryError: Java heap space

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OEM12C AGENT UPGRADE: [peer not authenticated] + COLLECTIONS_HALTED + Too many open files + Upload timed out before completion

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Another error spotted during update agents to new version…

… and inside logs:

java.lang.Throwable: java.security.PrivilegedActionException: oracle.sysman.emSDK.agent.comm.exception.VerifyConnectionException: unable to connect to http server at https://SERVER_NAME:3873/emd/main/. [peer not authenticated]java.lang.Throwable: java.security.PrivilegedActionException: oracle.sysman.emSDK.agent.comm.exception.VerifyConnectionException: unable to connect to http server at https://SERVER_NAME:3873/emd/main/. [peer not authenticated]

… later agent thrown:

Collection Status                            : [COLLECTIONS_HALTED(
  UPLOAD_SYSTEM Threshold (UploadMaxNumberXML: 5000) exceeded with 51567 files)]

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UPGRADE OEM12C AGENT FAILED AT “Preparing for Management Agent Upgrade” WITH “Exit Code :1”

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When i updated OMS, i tried to upgrade all agents.
One of them during upgrade process failed with “Preparing for Management Agent Upgrade” step.
But what is a reason of this behaviour?

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PROBLEM WITH OEM12C AGENT – Plugin mismatch between agent and repository

I just updated oem12c 12.1.0.2.0 -> 12.1.0.3.0 and updated few agents.
So – few new problem also spotted…

$emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
Agent Version : 12.1.0.3.0
OMS Version : (unknown)
(...)
Collection Status : Collections enabled
Heartbeat Status : Agent is blocked
Blocked Reason : Plugin mismatch found between agent and repository. Please perform an agent resync to unblock the agent. Mismatched plugins: [ The plug-in is oracle.sysman.db
(...)
---------------------------------------------------------------
Agent is Running and Ready

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OEM12C – CLEAN-UP OPERATIONS AFTER AGENT UPGRADE

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When You install oem12c release 3 as upgrade on previous version and update all agents on remote hosts to actual version, there are one more step to end entire process – remove old binaries of previous agent. This will be done later, so don’t hurry with this operation. Be sure first that new one agent is working correctly.

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