Oracle Database 12c: Multitenant, Services and Standard Edition RAC

The installation process of a typical Standard Edition RAC does not differ from the Enterprise Edition. To achieve a successful installation refer to the nice quick guide made by Yury Velikanov and change accordingly the Edition when installing the DB software.

Standard Edition and Feature availability

The first thing that impressed me, is that you’re still able to choose to enable pluggable databases in DBCA even if Multitenant option is not available for the SE.

So I decided to create a container database CDB01 using template files, so all options of EE are normally cabled into the new DB. The Pluggable Database name is PDB01.

As you can see,  the initial banner contains “Real Application Clusters and Automatic Storage Management options“.

Multitenant option is not avilable. How SE reacts to its usage?

First, on the ROOT db, dba_feature_usage_statistics is empty.

This is interesting, because all features are in (remember it’s created from the generic template) , so the feature check is moved from the ROOT to the pluggable databases.

On the local PDB I have:

Having ONE PDB is not triggering the usage of Multitenant (as I was expecting).

How if I try to create a new pluggable database?

A-AH!! Correctly, I can have a maximum of ONE pluggable database in my container.

This allows however:

  • Smooth migration from SE to a Multitenant Architecture
  • Quick upgrade from one release to another

To be sure that I can plug/unplug, I’ve tried it:

Other features of Enterprise off course don’t work

Create a Service on the RAC Standard Edition (just to check if it works)

I’ve just followed the steps to do it on an EE. Keep in mind that I’m using admin managed DB (something will come about policy managed DBs, stay tuned).

As you can see it works pretty well. Comparing to 11g you have to specify the -pdb parameter:

Then I can access my DB (and preferred instance) using the service_name I specified.

 

Let me know what do you think about SE RAC on 12c. It is valuable for you?

I’m also on twitter: @ludovicocaldara

Cheers

Ludo

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Ludovico

Oracle ACE and Senior Consultant at Trivadis SA
Ludovico is an Oracle ACE, frequent speaker and community contributor, working as Senior Database Specialist for Trivadis, Switzerland.

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