Oracle Database Whisperer, performance maker and story teller. Oracle Certified Master and member of Oracle OakTable. Owner of the ORA-600 [Database Whisperers sp. z o. o. sp. k.] company and blogger (blog.ora-600.pl). Founder of Pint with Oracle User Group (poug.org). Personally a big fan of Terry Pratchett: "Wisdom comes from experience. Experience is often a result of lack of wisdom."