Educational Consultancy - Web Servers - Oracle and IBM	Home

State of Web Server Software - Commercial Use

Scalability
Implementation for Scalability - Oracle
Oracle’s scalability is achieved through clustering technology, cross-domain management, and diagnostic tooling. Oracle offers Coherence, an in-memory data grid acquired from Tangosol. Coherence provides the capability for scaling and wide support of programming models.

Implementation for Scalability - WebSphere
WebSphere eXtreme Scale functions as an in-memory data grid that dynamically caches, partitions, replicates, and manages application data and business logic across multiple servers. It can also process high-transaction volumes efficiently and with linear scalability, while offering support for higher-level programming models.

Scalability - Differences Between IBM and Oracle Application Servers
Oracle’s Coherence uses a two-phase commit transaction protocol that lets all nodes in a distributed system agree to commit a transaction. The protocol results in either all nodes committing the transaction or aborting, even in the case of network failures or node failures. The greatest disadvantage of a two-phase commit is that a node will block while it is waiting for a message. This means that other processes competing for resource locks held by the blocked processes will have to wait for the locks to be released. Coherence also uses synchronous replication support which can slow down the system and affect recovery times. In both cases, this inhibits performance.

eXtreme Scale uses a one-phase commit to offer better performance and scalability. The WebSphere product also offers support for both synchronous and asynchronous replication. Asynchronous replication allows for system activity to continue in the background to increase application responsiveness, accelerate data intensive applications, and provide high availability and fault tolerance.

Application Infrastructure Virtualization
Given the resource constraints faced by IT organizations, server, storage, and networking virtualization have been incorporated into their IT operational and budgetary success. AIV: Application Infrastructure comprises a significant component of the commercial offerings from both Oracle and IBM.

Implementation for WVE - WebSphere
IBM’s WVE: WebSphere Virtual Enterprise provides prioritization and flexibility of deployment of the applications using pooled resources. WVE provides functionality analogous to a server hypervisor, but for the application server. It is application aware and provides wide range of services for workload and transaction management, as well as service level agreements beyond what the Oracle and BEA solution can address.

Unlike WebLogic Operations Control, which only supports BEA products, IBM’s WVE supports other application servers including WLS and JBoss. IBM WVE provides lower cost of operations, greater flexibility and agility, and better health management via application infrastructure virtualization and server consolidation.

Implementation for AIV - Oracle
In order to achieve a level of AIV from Oracle and BEA products, several offerings must be deployed together. These include VMware ESX Server, Windows or Linux OS, LiquidVM, BEA WLS Virtual Edition, and Oracle WebLogic Operations Control. Oracle's acquisition of WebLogic Operations control and WLS Virtual Edition provide significant strength in management and resource control of VMware server virtual machines and in supporting Service Level Agreements with calculations for variety of statistics.

The combination of three discrete Oracle products does not offer the same level of application management and quality of service as WVE.

Web Server - Benchmarks
SYS-ED is independent from the software companies. We analyze benchmarks for software updates and new products. For example, SPECjAppServer2004 is a client/server benchmark for measuring the performance of a representative J2EE application and each of the components that make up the application environment. JOPS stands for Java operations per second; meaningful statistics in assessing web server performance are Java operations per second and Java operations per second per processor cores.

Based upon these statistics, IBM WebSphere offers the best overall performance. David Silverberg and Jonathan Clarke have been assessing the validity of the statistics and the underlying assumptions of this benchmark information in a variety of hardware and hybrid software environments.

Web Server - Educational Consultancy
Befitting our first generation consultancy experience with Oracle, WebLogic, and WebSphere, SYS-ED offers an integrated curriculum of web server and Java courses.  We specialize in identifying and differentiating between industry standard content and a client's requirement for educational consultancy.

Web server and interrelated information technology subject matter can be researched using the search engine.

The audience, duration, and content can be used as a starting point to evaluate a fast-track course, consolidate topics, or augment an integrated training program.

Value Added Service
SYS-ED clients are welcome to submit Oracle, WebLogic, and WebSphere web server questions. Our system consultants and technology partners answer, explain, and where applicable reference source documentation. Questions are reviewed and answered on a first-come/first serve-basis. This service is available through our categorized and software specific Oracletrainingbysysed.us, WebLogictrainingbysysed.us, and WebSpheretrainingbysysed.us websites.