Date:         Thu, 14 Jan 1999 13:07:10 -0800
Reply-To:     "Self, Karsten" <Karsten.Self@SCHWAB.COM>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         "Self, Karsten" <Karsten.Self@SCHWAB.COM>
Subject:      Re: Size of macro variables
Comments: To: "MCLEAN, HAYS" <HAYS.MCLEAN@FANB.COM>
Content-Type: text/plain

The maximum amount of system space available is specified by the MVARSIZE
and MSYMTABMAX system options.  The documentation suggests that if the
limits specified are exceeded, additional space is allocated to disk.
 
I haven't experimented myself with the upper bounds of macrovariable
storage.  Documentation suggests it may be limited only by available disk
storage, though you would probably experience performance impacts.
 
There is a majik number 32,767 (2^15 - 1 -- maximum size of a sigend, 16
byte integer) lurking in many places in SAS.  You might try defining
macrovariables slightly larger or smaller than 32,767 bytes, on various
systems, and comparing results.
 
--
Karsten M. Self (Karsten.Self@schwab.com)
Trilogy Consulting
 
    What part of "gestalt" don't you understand?
 
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> ----------
> From:         MCLEAN, HAYS[SMTP:HAYS.MCLEAN@FANB.COM]
> Reply To:     MCLEAN, HAYS
> Sent:         Thursday, January 14, 1999 11:53 AM
> To:   SAS-L@UGA.CC.UGA.EDU
> Subject:      Size of macro variables
>
> What is the maximum size of a macro variable ?
> Thanks.
>
> Hays McLean
> First American National Bank
> 615-770-4178
> email: hays.mclean@fanb.com
>
>