Tag Archives: exadata

Use DCLI to check #em12c agents on Exadata – all at once

For all the benefits of Oracle Enterprise Manager 12c (OEM), there is one draw back when using OEM with Real Application Clusters or Exadata…. checking the status of the EM Agent on each node.  When a node is bounced, some times the EM Agent does not always restart.  When this happens on a single instance […]

Find ILOM(s) for #exadata

Oracle Exadata can be a complex piece of machine/equipment that is housed in a data center or some other remote location. Once it is all configured and attached to the network managing it can be done using standard SSH tools.  At times, there is a need to manage the Exadata or any other engineered systems […]

Combat with an enqueue wait event (enq: HW–Contention)

Recently I’ve been combating a high water mark enqueue wait (enq: HW – contention) on a single node within an Exadata I’m supporting.   I first noticed the wait when I was looking at the performance page for the node in Oracle Enterprise Manager 12c.  What I noticed was the a lot of brown looking spikes […]

Database Machine (EXADATA) Schematic problem in OEM12c

When adding an Exadata to Oracle Enterprise Manager 12c (OEM), it is pretty easy yet at times you may run into a problem or two.  Many of these problems can be minimized by using the Oracle Enterprise Manager 12c: Exadata Discovery Cookbook (cookbook).  The cookbook can be found here, so you don’t have to search […]