ADF Performance Tuning Video (42 min): Improve Your Oracle ADF App Response Time by as Much as 70 Percent

Performance needs to be ingrained in your application - it cannot be added in during the last stages of development. In this video I discuss how you can optimize the performance of your Oracle ADF Fusion application, diagnose and solve typical performance problems, and build an efficient, responsive, scalable ADF application that circumvents common bad practices. This video was originally presented as part of the Oracle ACE Track during the Oracle Technology Network Virtual Developer Day event "Oracle ADF Development - Web, Mobile and Beyond." Last month the video was published on OTNArchBeat (Oracle Architect Community Video Channel).

Important: to watch in high quality at YouTube, select HD quality (720p):

Improve Your Oracle ADF App Response Time by as Much as 70 Percent: 

Content

In the video I discuss several categories of things that are happening frequently too slowly, too often, too little, too soon and too big in ADF applications, and solutions.

Agenda of video session - things that are happening in ADF applications:

• Too slowly (too slow ViewObject queries, EntitObject DML operations, ApplicationModule pooling passivations and activations)
• Too often (too many (mini) queries, too many database round-trips, too many HTTP Requests, too many full HTTP Requests, too frequent ApplicationModule passivation & activation, unintentionally left iterators in PageDefs)
• Too big (too much data in ADF BC memory, too big scope for managed beans, too much HTML to the browser, too much logging on)
• Too soon (too soon executed taskflows, too soon instantiated ApplicationModules, ADF UI components that are loaded too soon (Immediate versus lazy))
• Too little (too little Caching, too little JVM Heap size)

We use the ADF Performance Monitor to detect, analyze and help resolve the problems discussed in this video:

ADF performance tuning: Overview Video published on the ADF Performance Monitor

A good performance is the key to the success of a web application. Oracle ADF applications are no exception to this rule. ADF performance tuning can be time intensive, costly and quite a challenge when performance issues require developers to delve deep into the inner workings of the ADF framework.

The ADF Performance Monitor is an advanced tool specifically designed for measuring, analyzing, tuning, and checking the performance of Oracle ADF applications. The tool can track and collect crucial (production) performance information of the application's runtime ADF components that are not standard provided by Oracle. It helps development, QA, and operation teams to detect, analyze and resolve common and less common issues in response times and resource usage of ADF applications. 

This blog publishes an overview video ADF Performance Monitor (13 min).

The first version of this tool was already released in 2009 (ADF 10g). One year later (2010) the second version (ADF 11g) was released. Last years the monitor has been improved and extended with many new and advanced features. Currently the ADF Performance Monitor has been implemented in more than 15 Oracle ADF applications over the world and has been proven to be very useful. Read the quotes of ADF experts and managers.

Oracle ADF applications and performance

ADF is a powerful, advanced and highly configurable framework that is very performing and scalable if the ADF developer chooses the right combination of parameter settings. However, web applications in general and ADF applications in particular have many pitfalls that can be circumvented by choosing the correct performance configuration parameter settings. In most cases, unfortunately, the default values are not the most optimal values.

Frequently even experienced ADF developers cannot pinpoint why an ADF application is slow. In this case information of what is happening behind the scenes would be very useful in order to get a better understanding of their ADF application.

In development, test and production environments, the ADF Performance Monitor provides similar functionality as the callstacks of the Oracle ODL Analyzer (by ADF request). The Oracle ODL Analyzer can be useful in the development stage, but can’t be used in test en product environments because of the amount of logging generated and the significant performance overhead. The ADF Performance Monitor records the performance with a very low overhead (less than 4%, caused by the detailed collection of performance metrics).

Detecting and Analyzing a High ADF BC Memory Consumption

Recently a new feature was added: a kind of ADF BC memory recorder and analyzer. It detects and warns when too many rows are being fetched (from the database or webservice) and held in ADF BC memory. With this feature you can investigate and address memory over-consumption. Memory over-consumption can lead to very long running JVM garbage collections, a freeze of all current requests or even OutOfMemoryErrors.

Development, QA and operation teams

With the ADF Performance Monitor, development, QA and operation teams get insight into what is happening inside their ADF application throughout the whole application lifecycle. With this insight ADF developers can diagnose and solve performance problems already in an early stage, make better (architecture) decisions and can build more responsive and scalable ADF applications. With the warnings and suggested solutions of the ADF Performance Monitor they can circumvent frequent performance problems, use best practices and deliver a higher quality. This will lead to an application that is more consistent and better to maintain. They can reduce the utilization of infrastructure, hardware and licenses. End-users will be more happy.

A whitepaper on the ADF Performance Monitor is available. More information is available on www.adfpm.com.