Hotsos Symposium Speaker – John Clarke

John Clarke is a new Hotsos Symposium presenter.


John ClarkeJohn Clarke is an Oracle Architect that specializes in Oracle performance engineering and Oracle architecture design implementations. John has been an Oracle DBA and infrastructure architect for nearly 15 years. He became interested in Exadata since its inception and launched Centroid's Exadata Center of Excellence in 2011.

Over the last several years, John has focused largely on Exadata and engineered systems education, training, implementation, optimization, pre-sales and post-sales technical support for Exadata environments. He currently directs Centroid's infrastructure Practice. John has presented at RMOUG, Collaborate, Oracle ExaDays, and the Enkitec E4 conference.

Presentation Title

Exadata Storage Indexes, Inside and Out


Most experienced Exadata DMAs have a general idea of what Exadata storage indexes are and how they work, and have often witnessed significant query performance improvement when storage indexes are used. However, since storage index behavior is wholly and automatically controlled by Oracle, DMAs have come to discount them as a reliable optimization tool.

In this presentation, John will conduct a deep dive into how storage indexes work, how their usage varies based on workload conditions, and demonstrate how to trace storage indexes to better understand how Oracle uses them under various scenarios.

Presentation Materials

Presentation materials are available online to attendees only.


The speaker schedule is as follows: