Downgrading Oracle Enterprise Edition (EE) to Standard Edition (SE)
Question: I want to downgrade my databases from
EE to SE to save licensing fees, but I need to carefully check to
ensure that I don’t accidentally use any EE features before
downgrading to Standard Edition.
What are the Oracle best practices for downgrade testing for
Standard Edition (SE)?
It’s a best practice to
hire an expert to come in and "certify" it for SE. To create the
checks yourself could take months of work, and you risk missing
something! Your licensing agreement requires allowing Oracle to
audit your shop and they have internal triggers to tell what
features each database is using.
- You have to interrogate your schema to see if tables/indexes
use EE features.
- You have to also interrogate your workload to see if EE
features are used. For example, function-based indexes can only
be used in EE.
- You cannot use some extra "packs" (diagnostic pack,
performance pack) or AWR unless you are using EE.
Beware, just because a feature works on SE, that does not
necessarily mean that you are licensed to use the feature!
Some Oracle features are allowed without explicitly purchasing any
querying any AWR tables is allowed in EE but it
triggers an internal Oracle system audit that may require you to
purchase the extra-cost performance and diagnostic packs.
For more details on the features of Oracle Standard Edition (SE)
vs. Enterprise Edition (EE) see these
- Oracle 10g Standard vs. Enterprise Features: MOSC Note
271886.1: Differences Between Different Editions of Oracle
- Oracle 10g r2 SE vs. EE Features: MOSC Note 465465.1:
Differences Between Enterprise, Standard and Personal Editions
on Oracle 10.2
- Oracle 11g release 1 .1 SE vs. EE Features: MOSC Note
465460.1 Differences Between Enterprise, Standard and Personal
Editions on Oracle 11.1