Oracle B32100-01 - Manual (Page 71)

Can I Use Multiple Metadata Repositories?
Installing OracleAS Infrastructure 4-9
If you are interested in seeing the names of all the schemas, see the Oracle Application
Server Metadata Repository Creation Assistant User’s Guide.
4.12 Can I Use Multiple Metadata Repositories?
You can install multiple metadata repositories to increase performance. This enables
different components in your topology to use different metadata repositories. To use
multiple metadata repositories, follow these guidelines:
■
To enable a Portal and Wireless or a Business Intelligence and Forms middle tier to
use a second metadata repository for product metadata:
a. Install the second metadata repository and register it with the Oracle Internet
Directory.
You can do this using the installer or the OracleAS RepCA. Use the installer to
create a new database containing the OracleAS Metadata Repository, or use
the OracleAS RepCA to install the OracleAS Metadata Repository in an
existing database. See the Oracle Application Server Metadata Repository Creation
Assistant User’s Guide for details.
b. When you install the Portal and Wireless or the Business Intelligence and
Forms middle tier, select the second metadata repository from the list of
registered repositories. This is the metadata repository that the middle tier will
use for its product metadata.
■
To use a second metadata repository for a J2EE and Web Cache middle tier, you
have different options, depending on which J2EE and Web Cache features you
need:
■
If you need both the Oracle Identity Management Access feature and the
Database-Based Farm feature, you need to register the second metadata
repository with the Oracle Internet Directory.
■
If you need only the Database-Based Farm feature, you do not need to register
the second metadata repository. The reason for this is that you might not have
an Oracle Internet Directory.
Figure 4–1 shows a topology that involves two metadata repositories. It uses four
computers:
■
Computer 1 runs a metadata repository and Oracle Identity Management
components. The Oracle Identity Management components use this metadata
repository.
■
Computer 2 has a metadata repository that is registered with the Oracle Internet
Directory running on Computer 1.
■
Computer 3 has a Portal and Wireless middle tier. This middle tier knows to use
the metadata repository on Computer 1 for its product metadata because it was
registered with that metadata repository during installation.
■
Computer 4 also has a Portal and Wireless middle tier. This middle tier knows to
use the metadata repository on Computer 2 for its product metadata because it
was registered with that metadata repository during installation.