Tag Archives: @em12c

Renaming #EM12c / #EM13c Targets

Oracle Enterprise Manager is a complex piece of software that many organizations are running now. Some organizations set out with a formalized naming standard; some do not. Those who do not ofter end up identifying a naming standard later down the road and then making requests to change the names of the targets being monitored. […]

Possible Truncation Attack? logged in #em12c nodemanager.log file

Recently I’ve come across issues with restarting Oracle Enterprise Manager and seeing messages in the nodemanager.log. The message that I’m referring to is (followed by a java trace stack): What is interesting about this message is the panic that may come over a person when they see the word “attack”. The first time I saw […]

Adding internal targets to #em12c agents manually

This post is meant to be more of a note for me to refer to later, but it is also good to share knowledge so here you go. Note: Hostnames are blacked out for a reason. Commands are the same though. Recently, I just installed an em agent using the silent install method I blogged […]

Change unknown SYSMAN password on #EM12c

When I normally start work on a new EM 12c environment, I would request to have a userid created; however, I don’t have a userid in this environment and I need access EM 12c as SYSMAN.  Without knowing the password for SYSMAN, how can I access the EM 12c interface?  The short answer is that […]

Using #DB12c PDB as a Repository for #EM12c…. Not so fast!

Last year, I wrote a post on how to setup Oracle Enterprise Manger 12c (12.1.0.3) with Oracle Database 12c (12.1.0.1) and what you could expect.  At the time the configuration was not supported by Oracle and I only did it to see if it could be done.  If you would like to read that post […]

Oracle Data Guard Switchover via DGMGRL vs. #em12c

When you start to look at high availability and replication of data many people look at either Oracle Data Guard or Oracle GoldenGate.  Personally, I opt for Oracle GoldenGate; however, it is not always the best fit for smaller environments where cost is a concern.  When cost is a concern, Oracle Data Guard is a […]

Upgrade Oracle Enterprise Manager 12c (12.1.0.2) to 12.1.0.3

In order to upgrade our OEM environment from 12.1.0.2 to 12.1.0.3 we need to download the latest version of OEM from either http://otn.oracle.com or from http://edelivery.oracle.com. Once we have the files needed to upgrade, we need to stage them in a location that is central. Note: Most downloads on Linux will be placed in the […]