Open System Services Management and Operations Guide (G06.29+, H06.07+)

Open System Services Management and Operations Guide—527191-005
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D
Falling Back to a Previous Release
Version Update
You cannot fallback to a G-series RVU from an H-series RVU because of hardware
considerations. The considerations in this appendix apply to OSS products only.
There might be other considerations when falling back to a previous RVU. See the
Release Version Update Compendium for the current RVU for fallback notes for
products installed on your system and see the Interactive Upgrade Guide for detailed
information about falling back to a previous RVU.
The procedures described in this appendix assume that you either do not use
DSM/SCM to manage OSS files (the Manage OSS Files check box is not selected in
the planner interface) or you do not have the T6031 D46 product version update (PVU)
or later installed.
Use of the DSM/SCM backout feature is described in the DSM/SCM User’s Guide. Be
careful when using DSM/SCM in a network of systems running both
G-series RVUs and H-series RVUs; the default for Manage OSS Files is unchecked
for G-series RVUs and checked for H-series RVUs.
Falling Back to G-series Release Version
Update As Far Back as G06.12
The procedure you use for falling back depends on the RVU to which you are falling
back and the method you used to install the RVU of OSS from which you are falling
back:
•
For RVUs after G06.18, you can use the DSM/SCM backout feature for files in the
OSS file system if you used DSM/SCM to install and manage OSS files for both
RVUs involved in the fallback.
•
On RVUs prior to G06.19, you cannot use the DSM/SCM backout feature for files
in the OSS file system. DSM/SCM will have no old configuration to fall back to.
The first time a G09 or newer OSS Monitor runs on a system that has a D46 OSS
Monitor installed, a copy of the existing D46 Monitor database is created. In the copy,
the names of the files have the prefix “ZOSS” instead of the original prefix “ZPOS”; for
example, ZPOSFSET is copied to ZOSSFSET. The copied files (whose names begin
with “ZOSS”) are extended to include new fields that support OSS security auditing.
After this, the G09 or newer OSS Monitor uses the converted database and ignores the
original D46 Monitor database.
To fall back to a G06.12 or more recent G-series RVU:
•
If no new features are used and there are no changes to configuration records, you
can safely fall back without any special preparation.