Survivor ratio determines the size of the survivor spaces, as a ratio of the total new space, and can be tuned to ensure that the survivor spaces are large enough to hold all the objects that survive "young" garbage collections.
This recipe assumes you are using the HotSpot JVM. JRockit manages memory differently and does not have an equivalent parameter.
For more details, refer to the Getting ready section of the Setting the new size recipe.
To set the heap survivor ratio for the HotSpot JVM, perform the following steps:
setSOADomainEnv.shscript in a text editor.