If you started QMF under TSO or CICS, change the QMF parameters on your START command to start QMF under DB2 Universal Database for iSeries.
Specify the following command:
(DSQSSUBS=ssid,DSQSDBNM=location
where ssid is your DB2 Universal Database for z/OS subsystem ID and location is your DB2 Universal Database for iSeries location name.