Andy Duncan is an inveterate software dabbler who lives in Oxfordshire, England. He is the author of the Orac open source tool for Oracle database administration and tuning. He started work at Oracle Corporation in 1998 as an Oracle DBA contractor at their EMEA Data Centre in the UK and remained there as a DBA through the January 2000 hurdle. Since then he has been working for Sun as a Java consultant, moving away from database administration into fulltime code development. Sean Hull is the author of Karma, a Perlbased Oracle database monitoring system he built after years of enjoying the benefits of the open source community and the OracleL email list. He resides in New York City, plying his Internet and Oracle knowledge through iHeavy Inc., his consulting services firm.