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Friday 1 February 2013

Real Application Testing



Oracle Database Management System 11g introduced a new extension to the world which quickly became indispensable for many of the leading companies of world because of its high applicability and practicality. What does it do? In short and simple terms, Real Application Testing provides a real-time analysis of the effects of a system upgrade or movement of data from one database from another and then suggests ways and means to prevent any potential problems that may arise from such movement of data. This helps make the movement to the new system smooth and glitch free which used to be a huge problem earlier and not only saves a lot of unnecessary trial runs but also reduces the downtime significantly, thus increasing the performance of the companies.

There are two main components of Oracle Real Application Testing. The first is Database Replay which allows a completely test the changes which would be brought about on your system because of the upgrade/system change by running it at full capacity unlike other simulation programs which only use small samples and therefore, may miss a lot of glitches which would then haunt the real run.

The second is the SQL Performance Analyser which shows the actual impact of the system upgrade/change on the SQL running mechanisms and any effect due to their performance change. SQL statements and programs usually run into thousands of lines of codes and system upgrades or patches tend to mess around with their functionality a lot. SQL Performance Analyser not only points out potential problems with the SQL execution, it also suggests possible remediation techniques on the SQL statements. With Real Application Testing, it is possible to run full scale simulation tests for all system upgrades, patches and even configuration changes, raise potential problems which might occur and also suggest remedial measures to sort out all the kinks before the upgrade is applied.

These all analyzers are machine specific and those are not aware of real server statistics especially there would be more load or more than one database running. Human handled statistics are more important for finding out accurate results of performance testing. High experienced and Oracle specialists can find these all in remote dba work or remote dba services. If you are not knowledge about database administration then you should need to hire either good experienced DBA or hire remote services.