Migrate EBS 12.2 to New Server and upgrade

[Natarajan]

Hi Erman,

 Planning to Migrate our below environment to new Server with Oracle Linux 8.x

Current Environment: 12.2.6/12c RAC/Oracle Linux 6.5

to

New Server with  12.2.13/19c RAC/Oracle Linux 8.x

Please advise on the approach :


Step 1: First upgrade OS from Oracle Linux 6.x--> to 7.x and then 7.x--> 8.x on Existing Server
Step 2: Install 8.x on New Server
Step 3: Migrate 12.2.6/12c RAC (Using Rapid clone) to new Servers
Step 4: Upgrade EBS 12.2.6/12c RAC to 12.2.13/12c RAC  (Only EBS this time)
Step 5: Upgrade Db 12.2.13/12c RAC to 12.2.13/19c RAC (Only DB this time)

But too many down times may be required, if client can not afford single down time for all above steps

Thanks

[ErmanArslansOracleBlog]

The following is a lean and clean plan;

Get the new hardware
Install Oracle Linux 8 on it.
Migrate your env to new hardware ( so your Linux 8 upgrade will be done automatically)
Upgrade the DB and then APPS (in one go, or in separate downtimes..)

And yes, this will require a lot of effort, that's why you should have separate part for these tasks.

Linux migration should be part 1 . ( a little project)
DB upgrade - part 2
APPs upgrade part 3

You can do DB& APPS  (part2 + part3) upgrade in one go in a single downtime ..  You are lucky you are not on EBS 12.1.. So your 12.2 already, so your downtime may be shorter (relatively shorter)

Anyways, it depends on the requirements..

You should do at least 1 test iteration for each of these parts.