sytem requirements of MS DOS

The following are the requirements for executing CLAIMS. Higher

values may yield better performance depending on various factors,

and in some special circumstances, lower values may actually

work, but are not supported.

1) A 386sx-class PC or better

2) Client operating system requirements:

16-bit character mode: MS-DOS 5.0 or Windows 3.1 or higher

32-bit character mode: MS-DOS 6.22 or Windows 95/98 or NT

32-bit gui-mode: Windows 95/98 or NT

3) Memory requirements: all numbers reflect the amount of memory that

must be available to CLAIMS

16-bit character mode: 512 KB free conventional

1,024 bytes free environment space

120 available file handles

32-bit character mode: 512 KB free conventional

3.1MB free EMS (expanded) or XMS (extended)

1,024 bytes free environment space

120 available file handles

32-bit gui-mode: 64 MB RAM

4) Disk Space required for programs

16-bit character mode: 30 MB

32-bit character mode: 45 MB

32-bit gui-mode: 65 MB

5) Disk Space required for data: 120 MB minimum (1 GB recommended)

6) OPERATING SYSTEM SPECIAL PARAMETERS

The following are in addition to the above requirements. These

vary with the combination of client and server operating systems

in use.

The most important issue with recent versions of Windows and

networking software is the introduction of write caching of data

at the client. This is a way of "cheating" to improve network

throughput. It is also a way to guarantee that data being shared

from a central server will get corrupted on a multi-user system.

YOU MUST DISABLE THIS DATA CACHING unless you are using a

client/server database such as Btrieve, DB2, Oracle, SQL Server,

etc.

Another performance improvement technique which is inadvisable in

most circumstances has to do with file and record locking for

handling multi-user updating of the database. The technique is

referred to as "Opportunistic Locking." If you use it, it will

become an opportunity to corrupt your database. It should be

disabled.