Did you read the post I linked to? If you did, the important point in that post was that because service.bat set JAVA_OPTS, then the settings in run.conf.bat are ignored. In other words, none of the memory settings made in run.conf.bat are used; instead the JVM uses its defaults. The first thing you should do is follow the instructions in that post and comment out JAVA_OPTS in service.bat and move the -Xrs. Most likely that will fix your problem.