Using the Rocket DV JDBC driver and not the IBM JDBC driver. I get messages:
CLASSPATH must contain the db2jcc4 and db2jcc_license_cisuz JAR files for DB2 connectivity java.sql.SQLException: The url cannot be null
DB2
Rocket Data
Web Viewer 12.1
Apache Derby
RO74120 NEED CONVERSION FROM INTERNAL DATABASE TO DB2 conversion program is incompatible with Rocket
Using the jar files from ....../lib/tomcat/webapps/CAOMWebViewer12/WEB-INF/lib will make the DerbyMigration work successfully.