In the last couple of months we had some strange problems with all processes of Oracle database and ASM instances just disappearing. The shared memory segment was still there and you could connect internally to the instance, even execute some queries until you give some statement where it actually needed to do something, resulting in some kind of a “ghost”… Read more »
When you want to permanently remove an agent from you OEM GC environment, you will have the GUI method and the manual method. The reason for writing this post is that I was able to remove all targets from within the GUI except the agent itself, at least at screen I was expecting to offer this functionality. The GUI method… Read more »
Sometimes it can be useful to simulate a problem in your database by simulating an ORA-error. After we had a nasty bug with Grid Control (GC suddenly wasn’t able to monitor the alertlog of 10.2.0.5 databases anymore, see my post about this problem) where we had to discover this bug by having a problem in a database which was not… Read more »
There is a problem monitoring Oracle 10.2.0.5 databases in OEM. Alerts for ORA- errors that appear in the alertlog of 10.2.0.5 databases won’t get generated and you will not be able to view the alertlog (time range) for databases of this specific version. The problem is introduced with database version 10.2.0.5 and is caused by the format of the timestamp… Read more »