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The wwpro_api_node_registry
package contains Oracle Portal node registration
APIs. These methods are used by the portlet provider administration UI
and by developers to register provider nodes and to create connection
paths (database links) to remote nodes.
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Methods in this package are deprecated in Oracle9iAS
Portal 9.0.2. Only the get_local_node_id
function remains valid. The functionality has been replaced with
a set of provider
group APIs.
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Note:
Node registration
Node registration is the process of storing information about remote
nodes in the local node. The local node is
created during Oracle Portal
installation. All other nodes are remote
nodes. When a remote node is registered, all providers local to
the remote node that have their Accept Registration flag set will be
registered to the local node.
Database links to the local node
For each remote node, a database link is made from the local to the
remote node. This link can be defined as a Net8
connect identifier or Net8 connect descriptor.
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A Net8 connect identifier uses predefined parameters to locate the
desired node and to create the database link. If a node's database
link is created as a connect identifier, the link is created with the
DB_LINK_HOST as that identifier. When a link is established, the
identifier is sent to Net8 to be resolved into a Net8 connect descriptor.
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A Net8 connect descriptor provides Net8 with the data it needs to
make the connection to the remote node. If a node's database link is
created as a connect descriptor, then the DB_HOST_ADDRESS,
DB_HOST_PORT and DB_HOST_SERVICE_NAME are used to form a descriptor.
That descriptor is used in the creation of the database link. When a
link is established, the descriptor is sent to Net8 and is recognized
by Net8 as a descriptor, not an identifier.
Editing remote node information
The database link for a remote node is created when the remote node
is registered. Each time a remote node is edited, the database link
is dropped and recreated.
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Term |
Definition |
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node |
An Oracle Portal installation. There can be more than one Oracle Portal instance (installation)
on an Oracle 8i installation. |
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local node |
The current Oracle Portal installation. |
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Net8 |
A component product of the standard Oracle networking package that
enables network servers to easily communicate with one another. |
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node registration |
The process of storing information about a remote Oracle Portal installation
in the current Oracle Portal instance to make remote providers available in
the local node. |
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remote node |
An Oracle Portal installation other than the current (local) installation. |
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Remote providers
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Portlet providers installed on nodes other than the local node. |
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