I am getting the following message everytime the PHP project based on Subversion loads...
Obviously shown, the OS is a Mac OSX Mountain Lion. I have also followed the instructions within the link, and it still appears at completely random times. However, subversion actions seem to work fine.
From main menu, select
Window -> Preferences -> Team -> SVN,
at right panel "SVN interface" zone.
You may find "client" is set to "JavaHL(JNI) Not Available".
Change it to "SVNKit(Pure Java) SVNKit vx.x"
Your error is that the library has been loaded in another classloader. I can only guess you have some other Subversion plugin installed (so that you have more than one) and the other one has already loaded the library so it cannot be loaded again.
Aside from figuring that out and removing the other plugin, I would guess you can just install the SVNKit plugin and configure Subclipse to use it instead of JavaHL. The SVNKit plugin is on the Subclipse update site.
来源：https://stackoverflow.com/questions/13793940/subclipse-error-subversion-native-library-not-available