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System Statistics Gathered in Exadata Mode – When Are They Relevant?

6 October 2013 Written by Christian Antognini

The aim of this post isn’t to explain what the “exadata mode” is. Hence, if you don’t know what it is, before continuing reading have a look to this post published on Kerry Osborne’s blog. The only thing I would like to add is that the “exadata mode” is available as of 11.2.0.4 or when […]

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Challenges and Chances of the 11g Query Optimizer

12 December 2011 Written by Christian Antognini

Challenges and Chances of the 11g Query Optimizer is the name of a presentation I gave at several events (e.g. Trivadis Performance Days, Oracle OpenWorld, DOAG Konferenz, UKOUG Conference) throughout 2011. Its abstract is the following: With every new release, the query optimizer is enhanced. Oracle Database 11g Release 1 and Release 2 are no […]

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Workload System Statistics Bug in 11.2

23 November 2010 Written by Christian Antognini

Since the introduction of 11.2 I receive on a regular basis questions related to “strange” workload system statistics. The last email on that topic was sent to me yesterday. So, instead to send, again, a private reply, I decided to write this short post. What’s wrong with 11.2 and workload system statistics? Let’s have a […]

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