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Stefan Koehler
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Stefan Koehler follows his passion about Oracle since +12 years and specialized in Oracle performance tuning, especially in Oracle cost based optimizer (CBO) and database internal related topics. Nowadays he primarily works as a freelance Oracle database performance consultant in large mission critical environments (e.g. +10 TB databases) for market-leading companies or multi-billion dollar enterprises in various industries all over the world. He usually supports his clients in understanding and solving complex Oracle performance issues and troubleshooting nontrivial database issues on short-term contracting basis.

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