Couple of question on upgrading oracle to

1) Is it simply just applying a patch set to the server?
2) Do we have to retest every functionality in our client applictions and stored procedures afer upgrade?
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When you upgrade your oracle server from to, you apply the patchset using the runinstaller but you have also to upgrade after the instances that already exist.
It is also recommanded to take a backup of the db and the Oracle Home before running the upgrade.
The readme.txt file (which will be provided with the patchset) will give you all the instructions you need for running the upgrade. All the functionnalities in your client application and stored procedures should continue to work after the upgrade but it doesn't prevent you to test them at the end of the operation.
sam15Author Commented:
ANy ideas how long it takes to do this?

Are you patching teh database or the instance?

I guess we still have to test everyghing to make sure it runs. right?
For the time it takes, it depends on the performance of your server and the number of database you have on this server. For remind, you have first to patch your Oracle Home and then run the catpatch.sql script on each oracle instance (this step is described on the readme file), so the time will vary depending on how many instances you have.

The Oracle Home upgrade can take only a few minutes but also about 45 minutes if you have not an efficient server. If you want to have a good estimation of the time it takes, I suggest you to do the upgrade on a test environment first.


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