Infrastructure
Introduction
Infrastructure is about setting up an environment for companies which is scalable, high available, secure, … . Multiple environments which are different in technology but equal at the same time.
Contribute Services
Contribute delivers services for design, installation, implementation, maintenance on different levels. Installation of application servers, databases, identity management solutions. Depending on the needs of your company and the available budget we could deliver you complete solutions or step by step implementations to achieve the ultimate goal.
We could also advise you about licensing issues and how you could save some money.
Tools
Oracle Weblogic Server
Oracle WebLogic Server updates the world's best application server for building and deploying enterprise Java EE applications with support for new features for lowering cost of operations, improving performance and supporting the Oracle applications portfolio.
Identity Management
Identity Management is much more then authentication and authorization
Oracle Identity Manager is a powerful and flexible enterprise identity management system that automatically manages users’ access privileges for enterprise IT resources. “User Life Cycle Management” is key to guarantee the security of any organization in order leverage the Business to remain in control. The OIM comprehensive approach for “User Life Cycle Management” offers unique capabilities to answer the critical compliance questions of "Who has access to What, When, How, and Why?"
OIM flexible architecture easily handles the most uncompromising and rigorous IT and business requirements—without requiring changes to existing infrastructure, policies or procedures. Oracle Identity Manager is designed from the ground up to manage user access privileges across all of a firm’s resources, throughout the entire identity management lifecycle—from initial creation of access privileges to dynamically adapting to changes in business requirements. Because of Oracle Identity Manager ’s innovative design, enterprises can elegantly incorporate necessary business changes at minimal cost, while avoiding enforced customization that might be necessary with other provisioning systems.
DBA – RAC
Databases and the Internet have enabled worldwide collaboration and information sharing by extending the reach of database applications throughout organizations and communities. Both small businesses and global enterprises have users all over the world who require access to data 24 hours a day. Without this data access, revenue and customers can be lost, penalties can be owed, and bad press can have a lasting effect on customers and a company's reputation. Building a high availability IT infrastructure is critical to the success and well being of all enterprises in today's fast moving economy.
An effective High Availability (HA) solution must address both unplanned and planned causes of downtime to achieve a truly fault tolerant and resilient IT infrastructure. Unplanned downtime is primarily the result of computer failures, data failures and human error. Planned downtime is primarily due to data changes or system changes that must be applied to the production system
Equally important, an HA solution must be practical to implement - minimizing acquisition cost and operational complexity while being able to efficiently scale-out to meet any performance requirement as business needs evolve.
Technologies/Terms
High Availability
High availability is a system design protocol and associated implementation that ensures a certain degree of operational continuity during a given measurement period.
Users want their systems, for example wrist watches, hospitals, airplanes or computers, to be ready to serve them at all times. Availability refers to the ability of the user community to access the system, whether to submit new work, update or alter existing work, or collect the results of previous work. If a user cannot access the system, it is said to be unavailable. Generally, the term downtime is used to refer to periods when a system is unavailable.
Single Sign On
Single sign-on (SSO) is a property of access control of multiple, related, but independent software systems. With this property a user logs in once and gains access to all systems without being prompted to log in again at each of them. Single sign-off is the reverse property whereby a single action of signing out terminates access to multiple software systems.
As different applications and resources support different authentication mechanisms, single sign-on has to internally translate to and store different credentials compared to what is used for initial authentication.
Clustering
High-availability clusters (also known as HA Clusters or Failover Clusters) are computer clusters that are implemented primarily for the purpose of providing high availability of services which the cluster provides. They operate by having redundant computers or nodes which are then used to provide service when system components fail. Normally, if a server with a particular application crashes, the application will be unavailable until someone fixes the crashed server. HA clustering remedies this situation by detecting hardware/software faults, and immediately restarting the application on another system without requiring administrative intervention, a process known as Failover. As part of this process, clustering software may configure the node before starting the application on it. For example, appropriate filesystems may need to be imported and mounted, network hardware may have to be configured, and some supporting applications may need to be running as well.
HA clusters are often used for critical databases, file sharing on a network, business applications, and customer services such as electronic commerce websites.
HA cluster implementations attempt to build redundancy into a cluster to eliminate single points of failure, including multiple network connections and data storage which is multiply connected via Storage area networks.
Oracle Info
