Tag Archives: linux

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.
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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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OMS in unavailable – Backend WLS or EM application seems to be down

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OMS in unavailable – Backend WLS or EM application seems to be down
When i tried to run again my test machine (vmware), started up database and OMS, and i tried to launch oms console to log into it i spotted new error:

Backend WLS or EM application seems to be down

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Putty – how to log terminal session output?

 

 

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PUTTY – HOW TO LOG TERMINAL SESSION OUTPUT?
… AND WHY YOU MUST DO THIS?

How to log output from a terminal to a file?
Different file at every new session without user interaction?

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