AMIS Query: Anjo Kolk (Miracle Benelux, Oak Table Network) – How the Middle Tier is Slowing Down Your Database


AMIS is proud to announce our next AMIS Query (free technical seminar), targeted at Oracle Database Architects and Database Administrators

How the Middle Tier is Slowing Down Your Database

Multi tier systems are very common today. Most of these systems include a web server, an application server and a database. They also rely heavily on the very recent HTML and Java technologies. In fact, these technologies are relatively new and a whole set of new (and young) developers have been exploring them. This presentation is exploring the mistakes that are made in the middle tier and how they affect the database and what can be done to improve performance dramatically with some simple changes.

This seminar, given by Anjo Kolk on 24 April 2007, is a reprise of the presentation given by him during Hotsos 2007 (Dallas, Texas). Anjo has been working for Oracle Europe from 1985 to 1994 in Holland and Ireland, after working for Oracle Japan for a year, he joined the Oracle RDBMS development team in the USA. After working for Veritas for a while he, nowadays is the director of Miracle Benelux.

He is recognized as the father of the Oracle Response Time Tuning methodology (YAPP) which was first documented in the YAPP white paper in 1998 and publicly used in his website  He has been speaking at several Oracle conferences all over the world and nowadays he specializes in troubleshooting Performance problems in large scale Oracle based systems.

This session takes place on Thuesday the 24th of April, starting at 18.00 hour sharp. The event will last until approximately 21.00. To register and for more details please visit our event-site at: (free dinner included) 

About Author

Marco Gralike, working for AMIS Services BV as a Principal Oracle Database Consultant in the Netherlands, has experience as a DBA since 1994 (Oracle 6). Marco is also eager and skillful in other fields, like Operating System Administration and Application Servers, mainly to find working, performing solutions. Marco has been specializing in Oracle XMLDB, since 2003, focusing on his old love, database administration and performance.He is an Oracle XMLDB enthusiast ever since. He is also a dedicated contributor of the Oracle User Group community, helping people with their steep XMLDB learning curve. To this purpose, Marco also devoted his personal blog site to XMLDB and other Oracle issues. Marco is a member of the OakTable network and an Oracle ACE Director (specialization Oracle XMLDB).


  1. Sounds interesting. Any chance to get the slides after the presentation for people like me living in the south pacific ?