DAL 1.3 (and later) supports VM/XA. DAL 1.2 (and earlier) does not support VM/XA. However, since under XA and ESA for VM IBM does not support the "attach to database" SQL/DS command, you must issue the "Open Database" DAL command with either a null database name or "@ SQL". Using one of these special database names will cause DAL to not attempt to do the "attach" command, but instead to connect to the default database.