Blackberry WALLET 1.2 - RELEASE NOTES Installationsanleitung PDF herunterladen (Seite 11)

Oracle White Paper—Oracle Portal Enterprise Deployment Guide: 11.1.1.2

WLS_PORTAL and WLS_PORTAL1 are clustered together and mod_wl_ohs will load balance

requests amongst them.

When a request needs authorization the Oracle HTTP Server will intercept the request and if

necessary redirect the browser to the Oracle Single Sign Server(s) for authentication.

The Oracle Web Caches are clustered together to provide a global cache which is consistent

across nodes.

In this implementation user requests are received at the load balancer on port 443. These

requests are passed on to the Oracle Web Caches using the HTTP protocol on port 7777. If the

originating request is using the SSL protocol (HTTPS) then the load balancer will strip off the

encryption prior to sending it into the site. It will encrypt traffic returning to the user. This

enables the site to operate in the most efficient manner possible.

Understanding the Application Tier

The application tier is where the main application logic resides. Oracle WebLogic servers

resident in this tier, are responsible for the application logic. Sometimes this application logic

takes the form of C processes, which are started by the WebLogic application. In this scenario

WebLogic is responsible for starting/stopping and channeling work to these C processes. An

example of this behavior is the Forms runtime process.

Requests are routed to the application tier from the Oracle Web Tier by mod_wl_ohs.

Understanding the Database Tier

Oracle Portal is an application built mainly in PLSQL. The Oracle application tier, interacts with

the Portal Metadata repository to construct web pages, this metadata is stored within an Oracle

Database, along with user content. Because the database is such an integral part of the

infrastructure, this database also needs to be highly available. Oracle therefore recommends that

the metadata repository be placed into an Oracle Real Application Clusters database.

Approach

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Blackberry WALLET 1.2 - RELEASE NOTES Installationsanleitung Seite 11