In the present scenario many large scale and small scale organizations are working and are completely dependent on the computer systems. The work groups of people working in these organizations tend to share their ideas, views as well as data availed to them in some or the other cases which can lead to betterment of the work. To fulfil such requirements clustering in computers can be done which help them work on similar databases and share the data as well. The modernisation has led to many technological advancements and computer cluster is a result of technological rise.
When multiple computer systems are bounded together they form a cluster. In clusters the multiple number on computers or servers interconnected to each other act as a single server to the end users as well as the applications. The Oracle Real Application Cluster (Oracle RAC) is one such cluster which is formed from clustering of Oracle databases. The infrastructure used by them is the Oracle Clusterware which let the different Oracle databases act and operate as a single system. The Oracle RAC was introduced in 2001 by the Oracle Corporation. The Oracle Clusterware is an essential component that is required for using Oracle RAC. To use the Oracle high availability infrastructure the Oracle clusterware enables the functioning of
1) Single instance Oracle databases
2) Oracle RAC databases
There is a one to one relationship between Oracle database and the instance in the single instance Oracle databases. Oracle RAC on the other hand can have up to hundred instances in which all of them share the same single database. Oracle RAC databases differ architecturally from the single instance Oracle databases as the Oracle RAC databases possess these two features:
- An instance-specific undo table space
- At least one additional thread of redo for each instance
Oracle clusterware also help in creating a clustered pool of data storage which can be used by any combination of single instance and Oracle RAC databases. These are the only clusterwares that we will most frequently use on large number of platforms on which the Oracle RAC operates.
Oracle RAC with the access of single database i.e. by providing clustering allows Oracle RDBMS software to run simultaneously on multiple numbers of computers. In an Oracle RAC environment a single database is concurrently accessed by two or more computers, each computer needs to possess an Oracle RDBMS instance. This helps the user to easily access to single set of co-ordinated data as well as it lets the user switch to either computer. Its main objective along with implementation of a clustered database is to provide
- Better Performance
- Improved Scalability
- Data Flexibility
- Higher Throughput
- High Availability Framework
- Connection Load Balancing
- Event Monitoring
- Communication Infrastructure
The Oracle RAC environment is traditionally located at data centre that is so because it makes handling and the management of all databases easier. Oracle RAC environment administration is done at three levels:
- Instance Administration
- Database Administration
- Cluster Administration
Today in the IT Industry, there is a tremendous influx of quality Oracle products in many fields like Databases, Middleware, Virtualization Services, Enterprise Management software and solutions, Development Languages like Java or even the servers like SPARC. Also, given the high number of industries worldwide like banks, retail chains and other industries which are embracing increasing number of Oracle apps, there is a huge demand for quality Oracle support professionals to manage their existing as well newer infrastructure.
An Oracle support team is expected to help the company maintain its day to day activities by ensuring that all the issues/requests/vulnerabilities with respect to the company’s infrastructure system are handled and resolved in timely manner. These tasks included but not limited to monitoring the systems for performance, handling issues from customers and end users, resolving the issues are necessary or escalating to higher levels depending on the complexity, maintenance of Oracle systems like SQL, Middleware etc and applying any patches/fixes as necessary.
Generally, an Oracle support professional is expected to have a graduation degree along with an official Oracle administration certification in their domain of expertise. Also, the person is expected to have a good knowledge of the entire ecosystem consisting of Unix, Windows, DB, Servers etc so as to have the complete end-to-end working knowledge of the system to be supported and maintained. There are many official Oracle certifications of various levels which can be useful to prove proficiency of a consultant in their respective domains.
Due to the huge response of IT industry worldwide in embracing the Oracle applications, it’s only natural that there is a demand of quality Oracle support professionals with attractive pay packages as well. There are several consultancies working worldwide who assist their clients in providing the right pool of Oracle support professionals.
Undoubtedly Oracle ranks high when it comes to providing top notch solutions be it from software end or hardware. Right from their flagship product of Databases, Fusion Middleware Suite, Virtualization Services, Enterprise Management software and solutions, Development Languages like Java or even the high end servers like SPARC and Sun Blade Servers, the market is flooded with Oracle technologies in almost all domains and also the industry is rapidly embracing the same.
This naturally has also given rise to the worldwide demand of quality Oracle support professionals and administrators who are needed to maintain the Oracle infrastructure of each company.
These support functions include but not limited to supporting the hardware infrastructure like the server and storage maintenance and troubleshooting and software support for products like Middleware, database or other application products. Due to the diverse applications of Oracle products, there is a tremendous requirement of quality Oracle support professionals all over the major countries with attractive pay packages.An Oracle support professional is expected to have a vast knowledge of the Oracle technologies and are suppose to work in teams to ensure the timely detection and correction of any faults or issues with the software solutions. They are expected to ensure that all the services and solutions are performing in such a way so as to deliver optimum performance with minimum outages and downtime.
To be a successful Oracle support professional, it’s desirable to have a basic graduation qualification or preferably an Oracle certified professional degree with a good level of hands-on experience with Oracle technologies. To help the companies utilize the potential of Oracle’s technologies, there are many experienced and reliable consultancies established which
provides the necessary skills and services for their clients.
Oracle hosts a wide range of products that include databases, security solutions, ERP and CRM software and other computer hardware systems and enterprise software products. Oracle also specializes in providing efficient customer support and other necessary support services.
Oracle support services can be availed through phone, e-mail and web-based support. Oracle support is broadly divided into oracle support services and oracle support resources. Oracle support services include:
Oracle Premier Support- It provides essential support services that includes 24/7 technical assistance, powerful proactive support resources, and product updates and
Oracle Advanced Customer Support Services- It provides critical support services for complex IT environments and helps maximize performance, high availabilities and reduces risk across the all Oracle applications, software systems and database.
Oracle support resources provide a one-stop online technical support portal and offer a wealth of resources for Oracle Premier Support customers. It has many features like search knowledge, log/track service requests, sign up for alerts, view product health recommendations, download product updates/patches, take advantage of Oracle Maintenance and Upgrade Advisors etc.
Oracle also provides customer support when you buy an Oracle product. A support for one year is normally included with the purchase price and after that the support contract must be renewed annually.
Oracle provides proactive support capabilities made available through My Oracle support that is integrated with most oracle applications. Oracle also follows specific Software technical support policies, hardware and systems support policies, global customer support security practices and so on. It also provides support systems in License Codes, Product Documentations, Additional oracle supports like Oracle Lifetime Support helps drives businesses across the entire Oracle technology environment. Based on different stages it offers premier, extended and sustaining support.