The following explicit restrictions are defined for DMS under JRIO:
Tape files and private disks are not supported.
EAM and logical system files are not supported.
Not all file parameters can be manipulated or set via JRIO. Only the parameters explicitly named in the API descriptions are taken into account. Especially when new files are created this results in restrictions when particularly special attributes are to be used. However, the most common parameters of the various access methods are already supported with the AccessParameter class and the associated implementations of the access methods.
Only the access methods shown and the files related to them are supported.
Shared update and locking are not supported in this version.
Reverse reading is supported only for keyed access, not for sequential or random access.
In ISAM the logical value flag is not supported. ISAM files which contain such a flag cannot be processed. ISAM pools are also not supported.
The undefined record format is not supported. Files with undefined record format cannot be processed.
File generation groups are not supported.