BEA WebLogic 7 server administration by Ali Akbar

By Ali Akbar

J2EE; brief for Java 2 Platform company version. J2EE is a platform-independent, Java-centric setting from solar for constructing, construction and deploying Web-based company functions on-line. The J2EE platform contains a collection of companies, APIs, and protocols that offer the performance for constructing multitiered, Web-based purposes. a number of the key positive factors and providers of J2EE: on the buyer tier, J2EE helps natural HTML, in addition to Java applets or purposes. It depends on Java Server Pages and servlet code to create HTML or different formatted facts for the customer. company JavaBeans (EJBs) offer one other layer the place the platform's common sense is saved. An EJB server presents capabilities resembling threading, concurrency, safeguard and reminiscence administration. those prone are obvious to the writer. Java Database Connectivity (JDBC), that is the Java reminiscent of ODBC, is the normal interface for Java databases. The Java servlet API complements consistency for builders with no requiring a graphical consumer interface.

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In client/server applications, the business logic is split across the client and server, but it usually resides in the client application. This increases the complexity of software. In addition, upgrading software or applying any changes is a huge job in itself, as these changes have to be managed with all client systems on the network. This creates the need for software that helps connect the two pieces—client application and databases— Chapter 1: WebLogic Server Basics while managing all business logic and providing seamless connectivity to the front and back ends.

However, once the managed servers are running, you can shut down your administration server and your managed servers will run fine. Machine A machine is a physical piece of hardware that may contain zero or more servers running on it, multiple CPUs, and multiple IP addresses. WebLogic Server allows you to define two different types of machines: a regular machine and a UNIX machine. A regular machine definition consists of the name of the machine, but a UNIX machine definition also defines a post-bind user ID and a post-bind group ID.

When the administration server is instructed to perform discovery upon startup, it uses this list to check for the presence of running managed servers. From a hardware perspective, the way we configure our development servers is a lot different from the way we configure our production servers. Development servers are never under stress and don’t need to be scaleable in terms of supporting a large number of users, whereas the production servers do function under stress and must be scaleable. WEB SERVICES Web services is a blanket term used for defining the infrastructure required to link applications in a business-to-business (B2B) world.

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