RE: Cloning vs Copy/Relink Oracle Home to a new server

  • From: "Patterson, Joel" <Joel.Patterson@xxxxxxxxxxx>
  • To: "Karthik.Ramadoss@xxxxxxxxxxxxxxxx" <Karthik.Ramadoss@xxxxxxxxxxxxxxxx>, "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
  • Date: Fri, 12 Oct 2012 10:56:18 -0400

I started switching to using a silent install of the software over the software 
clone -- especially if the central inventory switches say from /u01.... to 
/oradata... or something (solaris 10).

For some reason (its been almost 2 years), if I recall correctly, that I was 
not happy with the central inventory after a clone.   This may no longer be an 
issue; just an fyi.

I have found that using the ./runInstaller and creating the silent install did 
not leave any issues.

Joel Patterson
Database Administrator
904 727-2546

-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On 
Behalf Of Ramadoss, Karthik
Sent: Thursday, October 11, 2012 4:16 PM
To: 'oracle-l@xxxxxxxxxxxxx'
Subject: Cloning vs Copy/Relink Oracle Home to a new server

Thanks to Niall Litchfield for his nice note on Oracle Home Cloning 
(http://orawin.info/blog/2011/07/27/in-praise-of-clones/), I have 2 options in 
my linux server migration. I had earlier shared my plan to the list and I am 
down to clarifying one step in particular.
Setup:

I am moving a mix of 10g and 11g databases residing on an older server to a new 
server. The only changes to the setup is the hardware. OS versions, database 
versions all stay the same.

All Oracle_Homes, data files and archive logs are on EMC LUNS that I can 
unmount from old server and mount it on new server. Now, I have 2 options for 
this move

1.      Move the LUNS with the Oracle Homes as-is (including files like oratab, 
oraInventory, config files - anything that aren't in the LUNS) to the new 
server, relink the binaries in each Oracle Home.
2.      Clone Oracle Homes using the above procedure. This works great! But, to 
save time I'd have to clone homes ahead of time to somewhere temporary, and 
then move it to the LUNS after they are mounted on the new server. Not a huge 
deal but an extra step.

With limited maintenance window I am looking to eliminate any extra time if 
it's not needed. Given this scenario, is there any reason you'd choose Option 2 
over 1? If there are any gotchas with Option 1, what are they?

Thanks in advance,
Karthik


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