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Upgrading OBIEE 11g to OBIEE 12c – First thing to ensure

Our team is currently in the process of upgrading our OBIEE 11g environments to OBIEE 12c. I have been gathering information about the process and will be sharing information on our experience as we progress.

I wanted to point of the first thing you want to ensure before planning/starting the upgrade from 11g to 12c – this may save you a little time. Or if you have already started, and encountered an error relating to … catalog version is not supported … then this post might be helpful.

You can upgrade the OBIEE catalog from OBIEE 11.1.1.7.x or OBIEE 11.1.1.9.x to OBIEE 12c. This should upgrade without any major issues.
But you may unexpectedly run into the above problem if you had upgraded the OBIEE 11g catalog using patch sets and had not run the full catalog upgrade. This results in the catalog being used as an 11.1.1.7 or 11.1.1.9 environment, but the version stored in the catalog is still older (such as 11.1.1.3 or 11.1.1.5).
Then when you try to upgrade from OBIEE 11g to OBIEE 12c, you get the error because the catalog is still technically not yet on an approved version for upgrade.

To resolve this, you need to run a full catalog upgrade on the OBIEE 11g catalog. This involves modifying the instanceconfig.xml file as follows:

Change the value of the UpgradeAndExit parameter from “false” to “true” as shown in the example below.

upgradecatalog

Restart the presentation services.
After this is complete, edit the files again and change “true” back to “false“, and restart the presentation services again.

You should now be able to upgrade your catalog to an OBIEE 12c version.

I hope this helps. Thanks for reading.

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