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June 2001, Week 2

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Subject:
NM stack overflow and system abort 1458
From:
"F. Alfredo Rego" <[log in to unmask]>
Reply To:
F. Alfredo Rego
Date:
Wed, 13 Jun 2001 15:24:16 -0600
Content-Type:
text/plain
Parts/Attachments:
text/plain (108 lines) 
Heads up!

If you do not use HP B-Trees, this note does not apply to you.

Under certain circumstances, there is a problem during
Adager's B-Tree rebuilding on IMAGE C.09.02 (and newer).

------------------------------------------------------------
IMAGE (C.09.02 and newer) supports larger limits (1200
data items, 240 datasets and 64 paths on a master).

Adager (000604 and newer) supports these new IMAGE limits.

     MPE/iX 6.5 PowerPatch (Express) 2 comes with
     IMAGE C.09.02.

     MPE/iX 7.0 PP1 will also include IMAGE C.09.02 (or
     newer).  Interestingly, MPE/iX 7.0 (base release)
     comes with an older version of IMAGE.
------------------------------------------------------------


For a few years now, Adager has been happily rebuilding a
master dataset's B-Trees automatically (when changing the
capacity of a B-Tree indexed master, for example).

Enter IMAGE C.09.02 (and newer)...

IMAGE C.09.02 (and newer) requires a larger nmstack for B-Tree
rebuilding.  If your computer's default nmstack value is at
least 2 million, you are in good shape.  (This value is part of
the "misc" parameters in sysgen.)

If your computer's default nmstack value is LESS than 2 million,
please run Adager with this explicit nmstack value:

    :run adager.pub.rego; nmstack=2000000

If you have Adager JobStreams, modify the "run Adager" line to
include this "nmstack" parameter.


-----------------------------------------------------------------
With a smaller nmstack value, Adager versions older than 010516
terminate with an NM stack overflow.  Unfortunately, MPE/iX adds
insult to injury by halting with a system abort 1458 (SA 1458).

Adager (010516 and newer) now automatically handles this larger
nmstack requirement, regardless of your computer's default value.
-----------------------------------------------------------------


You can use Query's "version" command to verify your IMAGE version.

Please note that you want to pay attention to the "TurboIMAGE
Overall VUF" ("version, update, fix") value.  In my case, for
example, this value is "C.09.05" (i.e., it is newer than C.09.02),
even though the value for DBOPEN is "C.09.00".

:query.pub.sys
HP32216N.03.17  QUERY/NM  WED, JUN 13, 2001,  3:13 PM
COPYRIGHT HEWLETT-PACKARD CO. 1976

>version

     QUERY     N.03.17

TurboIMAGE Overall VUF:
     HP30391C.09.05  TurboIMAGE/XL       <=====  This is what counts
TurboIMAGE Procedures:
     DBOPEN     C.09.00
     DBINFO     C.09.01
     DBCLOSE    C.07.26
     DBFIND     C.09.00
     DBGET      C.09.00
     DBUPDATE   C.09.04
     DBPUT      C.09.04
     DBDELETE   C.09.04
     DBLOCK     C.09.04
     DBUNLOCK   C.09.04
     BIMAGE     C.09.04
     DBCONTROL  C.09.02
     DBBEGIN    C.07.24
     DBMEMO     C.07.24
     DBEND      C.07.24
     DBXBEGIN   C.09.05
     DBXEND     C.09.05
     DBXUNDO    C.09.05
...


Cordially,

  _______________
|               |
|               |
|            r  |  Alfredo                     [log in to unmask]
|          e    |                           http://www.adager.com
|        g      |  F. Alfredo Rego
|      a        |  Manager, R & D Labs
|    d          |  Adager Corporation
|  A            |  Sun Valley, Idaho 83353-3000            U.S.A.
|               |
|_______________|

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