Citrix client/Novell server

[philhege]

We have a large (~6.5MB) VFP 5.0 compiled app that sits on a Novell server along with the data. Our users connect to the app through a TSE/Citrix farm. Clients are a mix of NT/W2K. Recently, the application server (Novell 5) was replaced. Since then, users have been experiencing the dreaded "black screen" and internal consistency errors at various places in the app. Most frequently, the errors/terminations occur at callouts to command-line routines (querying COBOL and proprietary data), and within portions of the application that open multiple screens or perform significant redraws.

Does anyone in this community have experience with the Citrix environment and/or Novell and FoxPro apps? Has anyone experienced the same kind of problems? Is there a "best practices" list for this sort of environment? We know that Citrix has problems with the VFP method for drawing screens, but their knowledge base was no help (likewise Novell and M$).

TIA for your time and insights,

PH

 

[jworley]

We had problems with VFP apps running on an NT4 terminal server after the hardware had been changed from a P166 running 64Mb RAM to a PIII running 512Mb RAM - you would have thought the thing would have run much quicker, instead it ran really slowly and the workstations would lock up or produce weird results. Some searching around on the Microsoft knowledge base resulted in us trying the line:

"MEMLIMIT = 10000000" in the config.fpw file and bingo, no more problems. This is apparently a known issue where foxpro performs worse on faster platforms than it did on slower ones. This may have relevance to you, it may not !!

Jim Worley
jim@aits-uk.net

http://www.aits-uk.net

15 years practical IT experience from sales to support to development plus B.Sc. (Hons) Computer Studies, fluent German speaker, willing to have a go at anything and don't suffer fools gladly !

 

[philhege]

Thanks for the tip, Jim. We may consider applying this parameter.

The VFP executable was recompiled this weekend on the new box; no problems so far . Evidently the compiler hides some UNC mappings, so that may have been the hiccup. The item's somewhere on TechNet; I'll post the reference here when I find it.

Thanks again for your speedy reply.

Phil Hegedusich
Senior Web Developer
IIMAK

http://www.iimak.com

Boy howdy, my Liberal Studies degree really prepared me for this...