Tweaking JDeveloper to Make it More Lightweight
From some of the responses to the survey, it looks like quite a few people don't know about a useful feature that's been in JDeveloper for a while called the Extension Manager. You can use it to customize which features are switched on in the product.
Almost every feature in JDeveloper is implemented as an extension. By default, every extension is switched on. Over the last few releases, the number of features in the product has increased massively. But most people probably don't use all of the features all of the time. So, you can really speed up the IDE, unclutter its UI and make it use less memory by switching off the features you don't use.
If you go to Tools->Preferences... then switch to the Extension Manager preference page, you'll see the following panel:
As you can see, there's quite a lot of control over which features you want to enable. You can even define profiles so you can quickly switch between feature sets. Some predefined profiles are provided, such as "Java Development", which strips the IDE down to a bare-bones Java coding environment.
On my Windows XP system, the 10g preview in "Java Development" mode takes 60% of the physical memory at startup compared to having every feature turned on (it also starts a lot faster).
6:08:52 AM 
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