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- The VM options PermSize and MaxPermSize were removed, this technically implies that the only limit on memory is the one available on your machine, you can fine tune the native memory usage in a similar way using the new MetaspaceSize and MaxMetaspaceSize VM optionsapplication is only limited by the amount of available native memory, Use the new flag MaxMetaspaceSize to limit the amount of native memory used by the application. It is analogous to MaxPermSize.
- Remember to create a back up of your system especially on MACs, when installing java 8, it overwrites your existing java installation and apparently oracle no longer provides downloads for java 6. If you wish to fall back or to have multiple JREs apple provides java 6 downloads here.