Oracle DBA – A lifelong learning experience

Using Grid to display database CPU usage

Posted by John Hallas on September 3, 2010

There was a recent post on the Oracle -L list asking  about using Grid Control to  report on a particular databases cpu usage during a certain period of time. A number of answers came in showing  the sql queries that would answer the question but I saw the question being ‘ how can we display the CPU usage in Grid’  or indeed how can we produce a customised metric report on any database in Grid

However for those who are interested in the recommended scripted methods then the the answers that were of most use in my view were from Karl Arao pointing to  a script he has written and Rich Jesse produced the following code

sysman.mgmt$metric_daily mmd
sysman.mgmt$target mt
ON mmd.target_name = mt.target_name
AND mmd.target_type = mt.target_type
AND mmd.target_guid = mt.target_guid
mmd.metric_column like '%cpu%'
AND mt.target_name = :DB_NAME
AND mt.target_type = 'oracle_database';

My method was to create a report that could be used to report on any instance and this is how I did it.

On OEM select create report and give it a title, category and sub-category. This is how where it will be located in the reports tab. Select target type of ‘Database Instance’ and select a time period, in my case the last 24 hours.

Now add 2 new elements as I am going to produce a report with two metric graphs in. Edit the set parameters tab

Then ensure that  the appropriate metrics are selected by choosing the target type ‘Database Instance’ but again inherit target. Select whichever metric you are interested in and then repeat the process for the second required graph.

Now all you need to do is to look at the preview, enter a SID and hey presto

Finally our end reports looks like this – all we need to do s run the report and select the instance name

I hope that has proved useful and demonstrated how easy it is to run a customised report which can be run against any desired instance

One Response to “Using Grid to display database CPU usage”

  1. […] nice links from Karl Arao: […]

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