(9805) Direct SYSGEN parameter changes unbootable?

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(9805) Direct SYSGEN parameter changes unbootable?

Post by User » Sun Aug 22, 2004 9:26 am

After resuscitating an old VAX 4000-106 I decided to try and install Pathworks
5.0 on the system drive. Upon successful completion of installation I ran the
Pathworks config file which generously informed me that my system was
underconfigured. I had to SY
SGEN several params like PRCSECTCNT, GBLSECTIONS, and GBLPAGES, all too low.
after USE CURR, SET param, WRITE CURR
I rebooted only to be unable to login both normally and minimally. Only
STANDALONE back/boot works. Upon completion of bootup I see: Error activating
command interpreter tables DCLTABLES - Shareable images must be installed to
run priveleged image" , pres
sing ENTER just brings me back to Username: prompt.
Any answer out of this situation would be greatly appreciated.


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Re: (9805) Direct SYSGEN parameter changes unbootable?

Post by Wizard » Mon Aug 23, 2004 9:26 am

The OpenVMS Wizard would recommend use MODPARAMS.DAT and AUTOGEN for
this and similar modifications -- direct parameter modifications
are not something that the OpenVMS Wizard generally recommends, as
AUTOGEN can and does maintain required relationships between various
of the core system parameters. Further, direct system parameter
modifications tend to be lost after system upgrades and any time a
subsequent AUTOGEN is performed.

In particular, your system parameters are currently insufficient
for an operational bootstrap. Probably GBLPAGES or GBLSECTIONS,
in this case, but there can be other causes.

Reboot conversationally (as described in the FAQ), specify the
SYSBOOT command USE DEFAULT to select the default system parameter
values, specify STARTUP_P1 to "MIN" to avoid starting up any
layered products, log in on the console (glass TTY mode or via
the console serial line (selecting and enabling the serial console
is described in the FAQ), and start the process of AUTOGEN passes
to get back to a bootable configuration, and then use MODPARAMS.DAT
to get to the required settings.

If you do decide not to heed the advice of the OpenVMS Wizard around
(not) making direct parameter changes, do consider using the WRITE
command to store a copy of the unmodified parameter settings away;
you can later reboot conversationally and USE this file if (when?)
there are errors in the new parameter settings.

The OpenVMS Wizard will assume you are aware that the software
versions are very old. If you must run versions this old, do
apply all available ECO kits. Also do see the various existing
compatibility issues and discussions with these older versions
when operating with newer Microsoft Windows platforms; see
existing topics here here in Ask The Wizard.

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