Java Memory overflow Java.lang.OutOfMemoryError:PermGen space

Deploy the previous project to Tomcat today, it's okay to start. Because WebService is used, a memory overflow exception is reported when a method in WebService is called

Exception in Thread "http-bio-8087-exec-3" Java.lang.OutOfMemoryError:PermGen space

The memory of the online introduction of all tried, but it is not much use, first of all I have the code is correct, call the remote service method or whatever

To modify a memory version:

xms128m-xmx1024m-xx:maxpermsize=512m

After you've changed the boot, you've reported a mistake. Error occurred during initialization of VM Could not reserve enough space for object heap (initialization error, cannot be created)

In the end there is no way to get rid of all the other unrelated items in Tomcat, or to individually reassign a tomcat, re-add mine to solve this.

Java Memory overflow Java.lang.OutOfMemoryError:PermGen space