RE: 3rd try: Linux database server upgrade (hardware only)

I just successfully finished this move last weekend. Here is the top level steps I performed after a lot of testing and everything worked great. Everyone who replied had great input and I took a route that made most sense for the time window I had to perform this.

Prep steps:

• Installed same version of linux
• Set a temporary host name
• Copy all necessary linux config files
• Install all misc software - netbackup, etc.

Go live:

• Shutdown databases and all other oracle processes on old server
• Take cold backup of all databases (SAN copy)
• Unmount LUNs
• Shutdown old server
• Startup new server
• Mount LUNs - verify mount points
• Rename hostname
• Relink all Oracle Homes
• Startup database, listsners, agents, etc.

This worked very well for us. But next time around, I would try cloning Oracle Homes instead of just copy and relink. I had to forego that route since I didn't have enough testing window.

Again appreciate all your help.

Karthik

-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Yechiel Adar Sent: Wednesday, October 24, 2012 2:27 AM Cc: oracle-l_at_freelists.org
Subject: Re: 3rd try: Linux database server upgrade (hardware only)

You also need to retain the same IP address:

1) Firewall laws.
2) Tns names that specify IP.
3) Avoid the need to update the DNS servers.

I suggest that after you rebuild your new servers, you will clone the database and bring it up on the new servers to be sure it will work OK.

Yechiel Adar

On 05/10/2012 22:57, Ramadoss, Karthik wrote:

> Finn,
>
> Great points. I appreciate your input. We have a need to retain the hostnames to keep this upgrade transparent to the enterprise users.
>
> Thanks!

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