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Putting it In my previous blog ( Enterprise Manager Cloud Control, SNMP, and Plug-Ins – The Background ), I shared my frustration in trying to create a plug-in in OEM. Here are the technical steps for a very simple plug-in. Preparing Plug-in To build your own plug-in, you need to download a development kit: To download EDK using UI, from the Setup menu, select Extensibility, and then select Development Kit. OR To download EDK using EMCLI, run the following steps: Log in to OEM: $ /oracle/em/middleware/bin/emcli login -username=sysman Enter password : Login successful Download the EDK zip archive: $ emcli get_ext_dev_kit Downloading edk.zip File saved as edk.zip File(s) downloaded successfully Unpack the downloaded EDK ZIP archive to a directory on your local system. For example: $ unzip 13.3.0.0.0_edk_partner.zip There are several restrictions and guidelines you should know before you create your plug-in. Most of them can be found ...

Hi, I have been using Oracle Enterprise Manager (OEM or Cloud Control) since it was a client application. (I’m not sure whether it was in the era of Oracle 7 or Oracle 8). In the early stages, OEM was compared to other central monitoring systems (at the time, it was HP OpenView, CA Unicenter, and the like). As a DBA who was responsible for dozens of Oracle databases, I needed a main system like this. Since we had the OEM for "free" as part of a site license, we used it heavily. The problem was that the main IT monitoring tool in our company was another system that already monitored appliances, networks, and applications. So, we decided to keep the OEM to the DBAs and send notifications to this system. (It was monitored 24/7 by a control center.) Like today, we could send alerts by email, run an external script, or send an SNMP trap. We chose the SNMP trap since it is in the core of most monitoring systems and simple to define. OEM needed a lot of attention and maintenan...