The curious case of the blank plugin page in OEM13c

After an upgrade of Oracle Enterprise Manager from 12.1.0.5 to 13.2, I wanted to deploy  a new version of the plugin oracle.sysman.db. Downloaded the new version and got to the plugin-management page to apply the patch. But all I got was a blank page. Cost me quite a while to figure out what the – almost humiliating – workaround / solution eventually was.

Which page am I talking about:  Setup—> Extensibility (more...)

Deploying Oracle OEM agents 13c on windows targets (2008 R2) while OMS is on Linux

Situation at customer’s site: OMS 13.2 on Oracle Linux, targets are Windows machines, and a bit ancient: Windows 2008 R2. How to deploy agents on those targets? Several methods are possible in theory. In this blog I’ll describe my efforts to determine what is really possible and what is efficient.

When using Linux targets, there’s no question how to deploy agents, there’s a wunderfull mechanism to push agents to the targets. No pain (mostly). (more...)

Relocating base directory Enterprise Manager’s central agent

After the upgrade of the 12c central agent to 13c, I noticed the new central agent’s home located under the wrong – old agent – directory: /u01/app/oracle/agent12c/agent_13.2.0.0.0. Must have done something wrong. How to correct this? Want to move the directory to /u01/app/oracle/agent13c/. A very short blog to describe the two steps.

It’s a bit hidden away in the documentation (in the appendixes) but there’s a special procedure (more...)

Upgrade OEM 12.1.0.5 OMS to OEM13.2

Despite the rise of Oracle Management Cloud, I’m a fan of Oracle Enterprise Manager, with its small imperfections. So when noticing a 12c Oracle Enterprise Manager on Linux, and targets on Windows, I took the challenge of modernizing the customer’s environment a bit. And the starting point , 12.1.0.5 for OMS and 12.1.0.2 database as repository wasn’t that bad at all. This post is purely about upgrading the OMS. (more...)