The optimal performance of the Oracle database starts with the design, and this continues for the whole life of the database system. Businesses should meticulously consider performance issues in the initial design phase so that the system can be effectively tuned easily during the production stage.
An Overview Of The Methodology Of Oracle
The performance of the database system is very crucial today as computer systems are getting bigger and more complex thanks to the role of the Internet in business applications. To accommodate the above, Oracle has created a performance methodology over time to improve the design and performance experience of the system. This methodology is a guideline that lays down simple and defined activities that improve the performance of the system to a very large extent.
Performance Strategies And Their Role In The System
The strategies for performance differ in effectiveness. These systems have different goals, like systems for operations and systems for decision support. Each need customized performance skills. The system performance is created and in-built in the system. Issues in performance generally arise due to contention or the exhaustion of a system resource. When the system resource becomes exhausted, businesses experience downtime. With the elimination of these issues, Oracle database systems can be made scalable to meet a higher level of performance. The Oracle methodology needs to be placed on careful planning and design of the system to stop resources from exhausting and causing downtime in businesses. When resource conflicts are eliminated, these systems can be made scalable to the levels that the business needs.
1. Options For Investment
Most businesses make an effort to improve performance as memory, disk drives, high-end processors, and other system resources are extensively available and affordable. So, business owners resort to buying better CPUs, more disk drives, and memory to get an immediate improvement in performance. However, Oracle database consultants state any immediate performance booster is just a short-term remedy to a current issue. If the load and the demand on the database increases, the same problem will again surface in the future.
In some scenarios, extra hardware will improve the performance of the system. However, if the system has been designed poorly even after adding better hardware, its performance is not boosted. Before you buy new hardware for supporting the system, ensure there is no single threading or serialization in the application. In the long-term, it is prudent to increase the functionality of the application as per the number of resources you have physically utilized for every transaction occurring within the business.
2. Know The Scalability Of The System
Experts in Oracle DBA consulting state one should understand the scalability of the system to implement changes to boost its performance. One should understand the importance of scalability for the optimal performance of the Oracle database system. It means the ability of the system to process additional workload with a proportional surge in the usage of system resources. For instance, if the workload on the system doubles, the number of resources used for it increases as well. The system deploys twice the number of system resources it needs for the process. This sounds natural and obvious; however, because of system conflicts, the uses of resources might supersede twice the initial workload.
Poor Scalability Of Oracle Database Management System
The following are some instances of poor scalability-
- There is an increase in applications that need concurrency management when the user population rises
- There is a surge in locking activities
- There is an increase in the workload of data consistency
- There is an increase in the workload of the operating systems
- There is an increase in data access in transactions when the volume of data increases
- The presence of poor index design and SQL result in a larger number of logical input and output for the same number of returned rows
- There is reduced availability as the objects of the database take more time to maintain
Experienced Oracle database consultants add an application that becomes unscalable when the system resources are exhausted to such a level where no additional throughput is possible after the workload increases. These applications result in very poor response time and fixed throughputs. The following are some instances of the exhaustion of system resources-
- Exhaustion of hardware
- Memory allocation that results in swapping and paging
- Table scans for high-volume transactions that result in unavoidable disk input and output shortages
- Excessive requests for the network that cause bottlenecks in-network and schedule.
- Excessive thread allocation and process resulting in system crashes.
From the above, it is implied that designers of applications should create a design that utilizes the same system resources irrespective of data volume and user population. The design should ensure that heavy loads are not placed on the system resources that are beyond its capacity.
Those applications that need to be accessed via the Internet have more complicated performance and availability needs. Some applications are designed and created exclusively for the Internet; however, other applications for back-office needs like applications for general ledgers may have some or all of the data to be completely available on the Internet.
Consultants specializing in Oracle database management list the following traits of a good application created for the Internet-
- Available 24/7 for 365 days.
- Takes minimal time for testing
- Designed to meet the needs of an unpredictable and imprecise number of users
- Has multi-tier architectures
- Available for all queries
- Caters to the difficulty incapacity planning
- Has a timescale for rapid development
- Has stateless middleware
Therefore, when it comes to the design and the performance of any Oracle database system, the above factors need to be taken into consideration. Applications should be designed in such a way that they have short evaluation periods. If the design of the Oracle database is bad and poor, this means you need to take out time and re-implement and re-architect the system in the future to arrest issues that arise with time.