Hi, Oliver, Sorry for my poor English, I cannot understand your questions. 1. Does your first question mean data migration from PostgreSQL to MySQL ? If so, there is many data migration tools outside, for example: http://www.lightbox.ca/pg2mysql.php 2. You said your purpose to run juse one database on you JasperServer. Which one ? PostgresSQL or MySQL. For instance, once I install JasperServer with PostgreSQL at Tomcat, there is a database called jasperserver at postgresql. If you have just wished your reports connecting to other MySQL database, you need to add MySQL jdbc driver into the directory $TOMCAT_HOME/lib first. All resource, user and report unit data are still stored at PostgreSQL side. JasperServer guide is clear for normal installation only. Ching Post Edited by icecreaming at 2012-07-15 17:05