A DESCRIPTION OF THE PROBLEM :
By default, the Application Server is invoked with the Java HotSpot Server JVM. The default NewRatio for the Server JVM is 2: the ***old*** generation occupies 2/3 of the heap while the ***new*** generation occupies 1/3.

This line is wrong I think. old and new have been flipped.
As you can see from the previous line in the documentation, there is a contradiction between the two lines.

For example, setting -XX:NewRatio=3 means that the ratio between the old and young generation is 1:3, the combined size of eden and the survivor spaces will be fourth of the heap.



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
By default, the Application Server is invoked with the Java HotSpot Server JVM. The default NewRatio for the Server JVM is 2: the new generation occupies 2/3 of the heap while the old generation occupies 1/3.
ACTUAL -
By default, the Application Server is invoked with the Java HotSpot Server JVM. The default NewRatio for the Server JVM is 2: the ***old*** generation occupies 2/3 of the heap while the ***new*** generation occupies 1/3.

URL OF FAULTY DOCUMENTATION :
http://docs.oracle.com/cd/E19528-01/819-4742/abeik/index.html