[Info-vax] Undo Autogen on VMS 7.3

[Rob Jarratt]

"AEF" <spamsink2001 at yahoo.com> wrote in message 
news:a1e8d4f8-a072-4902-b8bc-58ccb3d54016 at j18g2000yqd.googlegroups.com...
> On Nov 1, 7:57 pm, "Richard B. Gilbert" <rgilber... at comcast.net>
> wrote:
>> On 11/1/2010 6:00 PM, Rob Jarratt wrote:
>>
>> > I have an old Alpha 433au to which I just added some extra memory. So I
>> > did an Autogen, but it looks like there were some problems with the
>> > parameters as there were conflicting SCSNODE values etc. I pressed
>> > ahead, but would now like to go back to the previous configuration. Is
>> > this possible? If so, how do I do it? Note that I have not purged any
>> > files in sys$system, so I am wondering if it is just a matter of
>> > deleting the most recent SETPARAMS.DAT and rebooting?
>>
>> > Thanks
>>
>> > Rob
>>
>> It's too late now but ISTR that there is a way to get AUTOGEN to tell
>> you what it thought should be done without actually doing it.  Sorry I
>> can't be more specific but it has been too many years since I actually
>> did it.
>
> $ @SYS$UPDATE:AUTOGEN SAVPARAMS TESTFILES
>
> You can also use GETDATA or GENPARAMS as the first phase. The
> important part is to not go past the TESTFILES stage. Then read the
> report to see what AUTOGEN would have done if you went to the GENFILES
> or SETPARAMS or a later phase.
>
> To undo the parameter changes you could RENAME SETPARAMS.DAT
> SETPARAMS.DAT-OLD and then run
>
>    @SYS$UPDATE:AUTOGEN SETPARAMS REBOOT
>
> but that won't undo any pagefile or swapfile changes. Those you'd have
> to fix manually by running @SYS$UPDATE:SWAPFILES followed by any
> needed PURGing or RENaming. Or you can run a full blown AUTOGEN again
> once you have your problem fixed. Be sure to always do a dry run by
> using TESTFILES as your end phase before committing your changes.
>
> AEF
>

I'll make sure to do TESTFILES in future.

Thanks for the advice.

Rob