Nothing special about RAC DB upgrades?

The GI version: 11.2.0.4

DB version: 10.2.0.5 and 11.2.0.4

Platform: Oracle Linux 6.4

Number of nodes: 3

We have a DB 10.2.0.5 running in an GI 11.2. We want to upgrade this DB in a DB 11.2.

We already have 11.2.0.4 RDBMS installation in all 3 nodes. That's what I intend to do, to update our data base RAC 10.2 to 11.2 CARS DB.

Step 1. Run the utlu112i.sqlin "pre-upgrade information tool" g's existing 10 DB.

Solve all of the problems mentioned in the output

Step 2. Stop the db 10g

Step 3. Copy the new file inti.ora with the new 11g setting in the ORACLE_HOME/dbs 11.2. Delete the old settings of 10g

the value CLUSTER_DATABASE = FALSE

Step 4. Set ORACLE_HOME as a new ORACLE_HOME 11.2

Step 5. set the ORACLE_SID for 10g DB and start the instance only in node 1 in UPGRADE mode

$ export ORACLE_HOME = < location of Oracle 11.2 >

$ export PATH = $ORACLE_HOME/bin: $PATH

$ export ORACLE_BASE = < Oracle_Base defined during installation 11.2 >

SQL > start Update pfile=11g_R2HOME/dbs/init.ora

Step6.run 11gR2_home/rdbms/admin/catupgrd.sql

Step 7. After running catupgrd.sql, start the instances of Node2 and Node3.

The peculiarity only I need to do is to put CLUSTER_DATABASE = FALSE. Is there anything else I need to do?

I want to do it manually because I have more control over the upgrade process.

What do you hope to gain from having more control? What would be the advantage?

Remember that you do not have * control more. You have the complete control and with it, all the responsibilities. In order to better not forget a step that would have made DBUA.

Furthermore, I've never used DBUA in Standalone or DBs CARS before. Need to learn

Have you read the last line in my first reply to this topic? I hope that you will test your upgrade before you do in production. You can read more of my thoughts on the tests:

Importance of testing

Testbeds

Because you will test this point, why not take this as an opportunity to learn how the DBUA is simple to do? Sound far, much easier than the manual upgrade.

Are the steps mentioned in my first post enough?

I already mentioned some of the things you forgot in my first answer. Here they are again:

You will need to manually fix the configuration of your network files. You have to manually manage the spfile and password file to new homes. And you don't have any stage to tell the new directory of Oracle clusterware.

None of these steps has appeared in your list. Other steps that I can quote are to update the oratab file, manually start all RAC instances, check your services are up and running, recompile invalid objects. In addition, I saw no mention of backups. It is wise to backup before and after the upgrade. The backup before the upgrade is desirable in case the upgrade is very bad. You can return to the old version. The upgrade after upgrade is complete, as expected, a failure occurs, you will not have to redo the upgrade after restoring a pre-upgrade backup.

That being said, learn to use the DBUA. Let the tools provided by Oracle as a DBA easier. In addition to the economy you time, the DBUA decreases the risk of human error in the upgrade process. Of course, I would go in my bosses office after I missed a db upgrade to see my boss to know that if I used the right tool for the job, the upgrade would not be smooth.

See you soon,.
Brian

Tags: Database

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