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Full name
Randolf Geist
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Randolf has been working with Oracle software for 15 years now, since 2000 as freelance database consultant, focusing primarily on performance related issues, in particular helping people to understand and unleash the power of the Oracle cost based optimizer (CBO). He is writing on his blog about CBO related issues and also regularly contributing to the OTN forums. Randolf is an Oracle Certified Professional DBA (OCP DBA) for Oracle Version 8i, 9i and 10g. He is also maintaining SQLTools++, an open-source Oracle GUI for Windows (tm) which is available from and his homepage.


49° 24' 6.84" N, 8° 40' 49.026" E