Technical data

Programming Release Notes
6.11 Hypersort (SORT/MERGE/CONVERT)—Alpha Only
6.11.5 Hypersort and VFC Files—Known Problem
V7.3
Hypersort does not correctly calculate the byte offset for keys for VFC Format
files.
6.11.6 Hypersort and /STATISTICS Working-Set Display—Known Problem
V7.3
Hypersort overflows the working-set display in the /STATISTICS output for any
working set that is 1,000,000 pages or larger. This is also a known problem with
SORT32.
6.11.7 Hypersort and INSVIRMEM—Restriction
V7.3
Both SORT32 and Hypersort depend on the proper relationship between working-
set size and page-file quota to avoid insufficient virtual memory. In general,
page-file quota may need to be three times the working-set size or even larger to
avoid insufficient virtual memory.
If insufficient virtual memory is detected, SORT32 signals INSVIRMEM and
attempts to complete the sort. Hypersort terminates in this situation with
INSVIRMEM or possibly ACCVIO.
6.12 Lexical Functions—F$GETSYI Lexical: Item NODE_HWTYPE
Is Obsolete
V7.2
The NODE_HWTYPE item is obsolete. Please use the HW_NAME item instead.
The NODE_HWTYPE item has not been removed; therefore, programs using
this item will still work. However, Compaq recommends that you migrate such
programs to use the HW_NAME item whenever possible to take advantage of
new capabilities.
On OpenVMS VAX systems, applications using NODE_HWTYPE receive cryptic,
4-character, system model names for all VAX systems and receive the string
ALPH for all Alpha systems. In contrast, the HW_NAME item operates on
both OpenVMS VAX and OpenVMS Alpha systems, and provides longer, more
descriptive names to be returned. For example, HW_NAME returns "VAXstation
II," whereas NODE_HWTYPE returns "VUV2" for the same system.
6.13 Librarian Utility—PGFLQUOTA Should Exceed 23000 (Alpha
Only)
V1.5
The OpenVMS Alpha LIBRARIAN sometimes does not inform you of errors
during compression, data reduction, or data expansion operations. This problem
occurs if the account or process in which the LIBRARIAN is running has a low
PGFLQUOTA process quota. Operation failure is not readily apparent because
the $PUTMSG system service always returns a status of SS$_NORMAL, even
when the system service fails. However, when a failure occurs, the LIBRARIAN
returns a status other than Success.
6–16 Programming Release Notes