[comp.os.vms] Unable to activate subprocess

IMHW400@INDYVAX.BITNET (06/02/88)

>Hi,
>  When in TPU session one tries to invoke dcl command using this
>  syntax:
>
>     DCL <dcl command>
>  TPU sends some messages saying he couldn't do it.
>  After some checking I saw that users whose BYTLM field
>  in their UAF was 4096 or less suffer from this problem
>  I increased this figure to 8192 (I didn't check if figures
>  in between are also adequate) and it worked fine.
>  Some how I fell that by doing so I just bypass the problem
>  and not solved it. What do you think?
>
>  Thanx, Benzi

I think that the users you mentioned are suffering from an incredibly stingy
value for BYTLM.  We routinely give out 20-25k (I don't remember the exact
figure).  The 4096 figure is the one that VMS installation builds into the
DEFAULT account, and is much smaller than the minimum recommended in the
system management guide :-O !

The problem is probably that LIB$SPAWN wants to jam a lot of DCL context
through a mailbox to the new process, and it exceeds the tiny BYTLM value.
I think that you did exactly the right thing; I don't believe there is any
other way around this problem.

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