PHD

[Richard Witkopp]

I think we had well over 1000 screens at my other site.
Maybe twice that many Quiz programs. We never did mass
recompiles without considering it a major undertaking.
The programs then take on all dictionary changes(elements,
etc?), and therefore must be tested before being allowed
into the production environment. We generally only recompiled
when we had to, adopting the "if it ain't broke, don't fix it"
philosophy.

VMS/RMS is nice for this, we put filler fields of 500 bytes or
so into every record. With compression, it only used 5 bytes
of space until we put something into it.

> 
> Please see my other response on this subject. In addition, if 
> you have 1000
> screens and you obsolete 1 item, I can see not wanting to recompile.
> Especially if the item didn't have SELECT values or anything 
> else I care
> about. If you got away with not recompiling in PhD, you'll 
> also get away
> with not recompiling in PDL. I do question going through lots 
> of changes and
> continually having to select which programs you compile and 
> don't compile.
> Hopefully everything gets recompiled from time to time to ensure
> consistency.
> 
> Since PDL is compiled (like QUICK), you can't recompile while 
> it's in use.
> However, you can recompile to a temp location and slip the 
> new one in during
> your daily backups when no one's on the system. Or during the 
> "unexplained"
> 5 minute down-time.
> 
> Bob Deskin              
> Senior Product Advisor  bob.deskin@cognos.com
> Cognos Inc.             (613) 738-1338 ext 4205 FAX: (613) 228-3149
> 3755 Riverside Drive P.O. Box 9707 Stn. T, Ottawa ON K1G 4K9 CANADA
> 
> 
> > ----------
> > From: 	Chris Sharman[SMTP:Chris.Sharman@ccagroup.co.uk]
> > Sent: 	November 19, 1998 3:42 AM
> > To: 	Bob.Deskin@cognos.com
> > Cc: 	Chris.Sharman@ccagroup.co.uk; powerh-l@lists.swau.edu
> > Subject: 	RE: PHD
> > 
> > >PhD and PDL are the same regarding when you must recompile screens,
> > reports,
> > >and runs. If you add or change a file to a PhD dictionary (via the
> > >appropriate screen), or to a PDL dictionary (by adding the 
> syntax and
> > >recompiling the dictionary), you still have to recompile 
> any screens,
> > >reports, and runs that use that file.
> > >
> > >In your example of adding an item to an existing file, you 
> would have to
> > >recompile any screen, report, or run that used that file. 
> And again, this
> > is
> > >no different for PhD or PDL.
> > 
> > This isn't true: changes that don't affect the length of 
> records don't
> > require a recompile. If a field becomes obsolete, and I rename it to
> > obsolete-garbage, I don't have to recompile anything that 
> wasn't using it.
> > When I reuse it, again I don't have to recompile anything 
> which doesn't
> > use it.
> > This saves a lot of work, and hopefully will still be the 
> case with PDL,
> > even with a full re-compile from source.
> > 
> > Someone mentioned that you can't PDL a dictionary while 
> it's in use: I
> > think
> > that's why we never use it.
> > 
> > If PHD is getting dumped, how about putting the sources in 
> the public
> > domain,
> > with appropriate disclaimers. That way those of us really 
> fond of it can
> > put
> > the work in to keep it going as freeware.
> > 
> ______________________________________________________________________
> > Chris Sharman			Chris.Sharman@CCAgroup.co.uk
> > CCA Stationery Ltd, Eastway, Fulwood, Preston, Lancashire, PR2 9WS.
> > 
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