This is largely preventive. While there is still a chance for fallback, make certain that your users understand the compatibility rules given previously in this appendix. If you have not looked at these rules already, read Migrating QMF objects.
If you fall back to the earlier QMF release, some objects created under QMF Version 8.1 cannot be used in the earlier environment. Consider this when planning for a possible fallback. The following list contains the restrictions that apply when you use some Version 8.1 objects in earlier releases.
QMF data objects exported using the QMF dataformat cannot be imported into earlier releases of QMF. IXF data objects exported using IXF dataformat can be imported into earlier releases of QMF provided that they do not use column names which are longer than 18 characters.
Some restrictions apply to Version 8.1 queries for fallback to earlier releases:
Procedure objects exported from Version 8.1 can be imported into earlier releases, and they can be run if the new QMF commands or command syntax are not used. Procedure objects saved with Version 8.1 cannot be displayed with earlier releases unless you first export them from Version 8.1 and import them into the earlier release.
These commands might fail to run for a number of reasons. See Using QMF Version 8.1 commands under earlier releases for details.
For specific differences between an earlier QMF release and DB2 QMF Version 8.1, compare the two releases of DB2 QMF Reference.