This more for simplicity of design, simplicity of coding and simplicity of
licensing.
Matthew Parker
Chief Technologist
Dimensional DBA
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From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Chris Taylor
Sent: Tuesday, July 19, 2016 1:42 PM
To: Franck Pachot
Cc: John Mchugh; ORACLE-L
Subject: Re: Multi-Tenant Question - Oracle chose HIGH COUPLING - why?
But this is only because the decision was made to "build it that way" right? I
mean, they could have built it where the PDBs were solely independent of the
CDB other than for Memory/Storage/Network definitions. Right?
For example, if I'm building a container object, I don't throw in everything
that a child object might reference do I? The child object can reference
whatever it needs when it needs it. It doesn't _have_ to be part of the parent
container.
Here's why this is interesting to me. Take APEX for example, or OLAP, or DBV.
It's in the CDB, therefore it's in the SEED PDB. At a minimum, we have 1
master and 1 duplicate of the same application. Now we build another PDB, and
it gets APEX and OLAP and DBV also. Now we have 3 copies, or iterations of the
same product.
The only reason I can think of "why" this is, is because those options are
licensed at the instance layer and not at the PDB layer.
Chris
On Tue, Jul 19, 2016 at 2:41 PM, Franck Pachot <franck@xxxxxxxxxx> wrote:
Hi,
All the system metadata (table, pl/sql, etc) related to features and options is
stored in the CDB$ROOT. So, the CDB must have all options that may be used by
one or more PDBs.
Think of it like the oracle executable and libraries having all the code even
when you don't use the options.
CDB$ROOT is like an ORACLE_HOME but for the part of the software that resides
in tables and stored procedures.
Regards,
Franck.
Franck Pachot | Senior Consultant & Oracle Technology Leader | Oracle Certified
Master 12c and Oracle ACE Director
