ADF is fast. If ADF application is slow, most likely this is related to development mistakes. I would like to tell you one story, based on my ADF tuning experience. Problem description: ADF application runs fast in DEV, when DB size is small. Same application runs slow in TEST/PROD, when DB size is large. Question – what is slow. Answer – slow means forms are loading slow. Ok, lets go to the story.
Developer decides to fetch data from DB and iterate over rows to process them. This is already bad practice, because it is much more effective to process large sets of rows in DB directly, without fetching to middle tier. But let’s assume this is valid use case and we really need to fetch rows. Developer implements fetching using getAllRowsInRange method:
VO data is loaded on UI and displayed in the table. Method to iterate through rows is called from button, this logic is not executed on initial load. Iterator is set with Range Size = 10: Read the complete article here.
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