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Conference azur::mcc

Title:DECmcc user notes file. Does not replace IPMT.
Notice:Use IPMT for problems. Newsletter location in note 6187
Moderator:TAEC::BEROUD
Created:Mon Aug 21 1989
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6497
Total number of notes:27359

5464.0. "Excursion and DECmcc" by MUNICH::FERSTL () Wed Aug 11 1993 05:07

    Hi,
    
    I'd like to know if a PC with Excursion-SW is supported as 
    Displayserver for DECmcc V1.3.
    
    (I've read the SPD and SSA for DECmcc, but supported Display-
    servers aren't explicitly mentioned.
    I assume PCs are not supported, but I'm not sure, if I interpret 
    the SPD and SSA right.)
    
    Regards
    
    Birgit Ferstl
    Digital Service Center Munich
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5464.1We have problems with itEIGER::SCHNEIDERRWed Aug 11 1993 08:2419
Hello Birgit,

I don't know if it is supported or not, but we have some experience with useing
PC X-WINDOW applications with DECmcc.

A customer tried EXCURSION. It didn't work with MCC V1.2 and V1.3. Always we
saw that the window on the PC died or locked after a view operations. We saw a 
meassage like "insufficent recoures at system".

Now this Customer uses DW DOS on the PC and it works very well !!!!

An other customer uses XVISION on the PC and TCP/IP as transport. This is even 
worser that EXCURSION. MCC crashes, lot of errormessages, the window dies ...

There is a patch arround to fix some Iconic MAP (X-Windows) problems, but this 
didn't help with the XVISION. We didn't try on the EXCURSION system.


Regards  Roland
5464.2re .0TRKWSH::COMFORTHere beside the rising tideWed Aug 11 1993 11:2517
    
    My customer has been using eXcursion for a couple years now with MCC
    with varied success.  Indeed eXcursion V1.0 had some problems with MCC
    V1.1 and V1.2.  Most problems occur with respect to the PC running out
    of memory resource.  Other problems involve leaving "ghost" DECnet
    links up that ultimately cause DECmcc to experience startup problems.
    
    The customer and I obtained information that V1.1c or greater will
    function better.  The customer installed V1.1c shortly after I upgraded
    a test MCC system to V1.3.  The eXcursion window has been pretty
    heavily tested and so far with DECmcc V1.3, DECW$MOTIF V1.1 and
    eXcursion V1.1c, the problems seem to have gone away.  I suspect that
    sooner or later we will hit the memory resource problem again, but the
    issue has been reduced so much that X-displays are now considered a
    viable implementation for remote DECmcc displays.
    
    Dave
5464.3ThanksMUNICH::FERSTLWed Aug 11 1993 12:0423
    Re .1, .2
    Thank you for your answers. 
    
    I was asking, because my customer is often having problems when the 
    PC crashes.
    The DECnet link then is in a "closed" state and the Client-process
    on the MCC-system (PCX$SERVER process running the MCC_MAIN.EXE)
    is still alive.
    In this situation it isn't possible to create a new display (you
    just see the copyright window and then it hangs) on a
    PC or a Workstation until the old PCX$SERVER process is killed.
    
    I could reproduce it in my office with DECmcc V1.3 and Excursion 
    V1.1g.
    
    I was asking if Excursions is supported, because I'd like to know if I
    should escalate the problem or just tell the customer that he can be
    happy that he is having no other problems (like resource problems) 
    than the "MCC hanging" problem.
    
    Thanks for you quick help 
    
    Birgit
5464.4Same in batchTRKWSH::COMFORTHere beside the rising tideWed Aug 11 1993 15:3513
    
    I don't know that this is relevant, but maybe the question is why
    doesn't MCC exit properly under certain circumstances.  I have seen
    this type of situation when running MCC maps from a batch file, the
    DECnet link is hosed up and the batch is just sitting there, but there is
    no display on the VMS workstation (or PC) and like your situation, one
    cannot start a new X-session to the target workstation without killing
    the orphaned process that MCC is running in.
    
    No answers, just more questions.
    
    Dave