Prior to QMF Version 8.1, multiple releases of QMF could access one DB2 UDB database, and all releases used the same QMF control tables and QMF objects. With QMF Version 8.1, only QMF Version 8.1 installed in QMF Compatibility mode can access the same DB2 UDB database as previous QMF releases.
If QMF Version 8.1 New Function mode is installed into a DB2 UDB database, no previous releases of QMF can access that database.
Note: A QMF Version 8.1 New Function mode installation can connect to a QMF Version 8.1 Compatibility mode installation and conversely, a QMF Version 8.1 Compatibility mode installation can connect to a QMF Version 8.1 New Function mode installation.