{newbie}Powerhouse with flat file back end

[Ian Wedge]

Matt

The system I work on is used by some of our customers on HP-UX with C-ISAM
files. In the early days ('91/'92) there were some problems with files being
left open on exiting programs, which we resolved by putting in Close
statements.

Scalability is a relative issue. The people using our system are
Universities, and although most of those running under Unix are fairly small
institutions I know of one large site that was using the full suite of
software - student admin, finance, estates management. They had no problems
of scalability that I know of.

I can't remember when we last had a file corruption issue to deal with.
Those isolated cases that have occurred over the years have been at sites
running VMS rather than Unix.

File contention has never been much of an issue either.

As for this being an archaic approach, I'd say the important criteria are
does it work and is it affordable. For some situations a less archaic method
might not pass both hurdles.

Hope this helps.

Ian Wedge

-----Original Message-----
From: powerh-l-admin@cube.swau.edu
[mailto:powerh-l-admin@cube.swau.edu]On Behalf Of BUTLER,MATT
(A-Roseville,ex1)
Sent: 07 September 2001 01:40
To: 'powerh-l@lists.swau.edu'
Subject: {newbie}Powerhouse with flat file back end


My company is investigating use of a powerhouse application that uses a flat
file back end on HP-UX UNIX.

<questions type=newbie>
I seem to be the only one that thinks this is a problem.  In this day and
age this seems pretty archaic to me.  Has anyone had experience with such a
system?  Are there scalability and file locking issues?  What about
contention and/or possible corruption of files?

Not knowing much about it does PH talk directly to the files?  Or does it
use something else as an intermediary to handle the I/O?
</questions>

Thanks

Matt Butler

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