Sunday 26 January 2014

Valuable Practices In Database Performance


Author: Aaron Taylor
It's important to maximize on database performance in order to reduce network traffic and the response time for each query. The issue of performance should however be factored in during the development process and not after a system has been fully implemented. By assessing such matters from the outset, a more desirable outcome can be achieved. Thus, if you want to optimize on performance, you have to begin by evaluating the aspects that will help yield the best performance and then focus on building up those areas as the system is being developed. It's good to note though that the gains experienced from areas such as hardware and memory are often incremental.

Database administrators can employ different techniques when designing a database in order to maximize on its responsiveness even as it expands. For example, one of the most important things to do is to design tables with the correct indexes. Inappropriate indexes can greatly interfere with performance. If indexes are not put in a query optimizer, the optimizer will take time to sift through the volumes of data to retrieve what is required and this translates to a very slow process. The indexes must therefore be designed and fixed in the right way. In addition, in designing the database, it's also important to write out the required queries in the tables. This means you should take time to work on the SQL statements because by doing so, you will benefit in the sense that you will get a better response time.

Other than that, it's essential to only use a cursor where it's very necessary and also take into account the fact that the optimizer functions well where sets of data are involved, unlike when a row by row process is implemented. In view of this, with poor performance, an organization's reputation and service delivery can be greatly impacted. Thus, it's always better to take a preventive approach to avoid any adverse conditions. Nonetheless, whenever you encounter a problem of poor performance in your database, you have to find the cause and also devise ways to fix the problem.

Database performance can be assessed through effective monitoring and once this is done, the issue can be corrected through partitioning tables, renormalizing data, adding processing power or adjusting the system configuration. However, a systematic approach has to be employed in that the objectives of the database system have to be first established before specific monitoring is planned and solutions are implemented. In cases where the performance is still not satisfactory, database administrators have to look for the constraints and then tune the system in order to get the resources balanced.

Database monitoring should be keenly evaluated to avoid the risks that come with system degradation. In general however, larger databases require more hardware equipment. Also, the number of concurrent sessions and operations conducted within the database matter as well.
Article Source: http://www.articlesbase.com/databases-articles/valuable-practices-in-database-performance-6848685.html
About the Author
For instance, a school library needs lees hardware than that which is required in a warehouse where there is frequent analysis of sales, products and customer information. In addition, in the case of the warehouse, there will also be higher requirements for storage space. For more interesting information, you can visit the following URL: Database Performance

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