Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pasteur!ucbvax!VENUS.YCC.YALE.EDU!LEICHTER
From: LEICHTER@VENUS.YCC.YALE.EDU ("Jerry Leichter ", LEICHTER-JERRY@CS.YALE.EDU)
Newsgroups: comp.os.vms
Subject: Re: Can't access big records via DECnet
Message-ID: <8802251638.AA27470@ucbvax.Berkeley.EDU>
Date: 19 Feb 88 22:45:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 28


	In article <195600003@uxc.cso.uiuc.edu> sandrock@uxc.cso.uiuc.edu
	writes:
	   It seems that if I access a data file with records larger than 4096
	   bytes from a FORTRAN program via DECnet (i.e. FAL) that the RMS
	   error "Record too large for user's buffer" is returned. This only
	   happens when the access is via DECnet; local access of course works
	   fine....

	Please post if you have any information concerning this.  I am
	experiencing the same trouble.

RTFM (but see below)!  From the RMS Reference Manual, Section 5.22 (documenta-
tion of the FAB$W_MRS - Maximum Record Size - field):

	For DECnet remote file access, the maximum record size is set by
	using the /NETWORK_BLOCK_COUNT=n qualifier to the SET RMS_DEFAULT
	command.  DECnet remote file access can have record sizes as large
	as RMS supports.  [N.B., this discussion appears after a table of
	maximum record sizes for different file organizations and record
	formats.]  The default number of blocks is equal to the SYSGEN
	parameter RMS_DFNBC, the default for which is 8 blocks (4096
	bytes)....

I'll admit I started off looking in the wrong manual - the Guide To Network-
ing.  It pointed me to the Guide To File Applications, which then pointed me
rather quickly to where, in hindsight, I should clearly have looked to begin
with.
							-- Jerry