You wouldn’t believe it until you try it yourself. I’ve been using the Eclipse Mars developer milestones lately, and I’ve been having some issues with slow compilation. I always thought it was because of the m2e integration, which has never been famous for working perfectly. But then, it dawned upon me when I added a JPA persistence.xml file to run some jOOQ + Hibernate tests… I ran into this issue, and googled it to learn that many people are complaining about JPA validation running forever in their Eclipses.
So I searched for how to deactivate that, and boom!
All of my Eclipse got much much faster
In fact, I didn’t just deactivate JPA validation, but all validation:
I don’t remember the last time I ever needed validation, or thought that it was a useful feature in the first place. If you want to help your whole team, you can also check in the following file in each of your projects’ .settings/org.eclipse.wst.validation.prefs files:
DELEGATES_PREFERENCE=delegateValidatorList USER_BUILD_PREFERENCE=enabledBuildValidatorListorg.eclipse.wst.wsi.ui.internal.WSIMessageValidator; USER_MANUAL_PREFERENCE=enabledManualValidatorListorg.eclipse.wst.wsi.ui.internal.WSIMessageValidator; USER_PREFERENCE=overrideGlobalPreferencestruedisableAllValidationtrueversion1.2.600.v201501211647 eclipse.preferences.version=1 override=true suspend=true vf.version=3
This has the same effect, but can be checked into version control.
Found this tip useful? See also our list of Top 5 Useful Hidden Eclipse Features