Markus Flechtner is a Senior DBA with more than 30 years experience in the field of Oracle databases. He started as a developer (Oracle Forms, Oracle Reports, PL/SQL) in the 1990’s. Later he spent some years at Oracle Support (Field Support). After some years as a database administrator at a credit agency with some High Availability databases (Oracle RAC, Oracle DataGuard) he joined a consulting company in 2008.
Since 2022, he’s a Principal Consultant at ORDIX AG at Cologne (Germany). He is specialized on Oracle Real Application Clusters Oracle Multitenant and database upgrade and migration projects. One of his largest projects was setting up a 26-node RAC cluster with 5 large databases (10 – 30 TB) for an US based telecommunication provider.
He is a frequent speaker at national and international conferences like Oracle Open World, IOUG COLLABORATE, UKOUG Tech, nlOUG Tech Experience and the DOAG annual conferences.
He is blogging in German (markusdba.de) and English (markusdba.net).
Markus is a delegate for the annual DOAG meeting and Co-Founder of ora2know (ora2know.de).
Markus is co-author of the (german) book „Der Oracle DBA“ which was published in 2016. He contributed the chapters “Multitenant”, “Globalization Support” and “Database Upgrades” to the book.