Good Morning!
Just wanted to thank everybody for their responses and excellent feedback.
Renaming the file worked like a charm. This allowed me to create the
controlfile of the new database and bring it up w/o any problems.
Now I know :-)
Steve
-Original Message-
From: Morrow, Steve
Sent: Tuesday, April 10, 2001 3:36 PM
To: '[EMAIL PROTECTED]'
Subject: Temporarily Renaming the sgadefSID.dbf File
Hi All,
Trying to clone our PROD to a test database on the same machine for
testing our 734--8i upgrade, and of course we're encountering the
"can't-start-the-new-without-shutting-down-the-old" database problem (ie,
ORA-9782 on the CREATE CONTROLFILE command). We've worked around this in
the past by scheduling a time to bring down PROD.
I know that this is the safest, most reliable way (besides NOT doing this
on a production box...but I have no choice), but believe it or not, I
actually saw a reference on a Metalink forum to rename the sgadefSID.dbf
file, start up the new database, then rename the file to its original
name. Obviously sgadef gets created at instance startup as a memory map,
but it doesn't look like it's used for anything after that (it's certainly
doesn't seem to be written to). I do know that you can get an octal dump
of the file to determine the shared memory ID for whatever reason.
Everything else I've heard/seen about this file has pretty much said DON'T
TOUCH IT!!! But if the instance only uses it at instance startup, is
there any harm in renaming it temporarily to get the other database up?
If so...why?
And have any of you tried renaming or deleting the file in your cloning
(or other) efforts? Did it blow up, or work?
TIA,
Steve
_
Steve Morrow
IT/Tech Support
University of South Florida
phone: 813-974-5519
[EMAIL PROTECTED]
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Author: Morrow, Steve
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