I think it has got to do with the default JVM mode on windows. It assumes -client and probably the heap allocated is 64M.
When I change the jacc server config to run with 128m, I get a full run.
asaldhana~/JB5/trunk/testsuite/imports>svn diff server-config.xml Index: server-config.xml =================================================================== --- server-config.xml (revision 61719) +++ server-config.xml (working copy) @@ -127,7 +127,10 @@ <jvmarg value="-Djava.security.policy==${build.resources}/securitymgr/ server.policy"/> <jvmarg value="-Djava.security.debug=failure"/> </server> - <server name="jacc" host="${node0}"/> + <server name="jacc" host="${node0}"> + <jvmarg value="-Xmx128m" /> + <jvmarg value="${jpda.cmdline}" /> + </server>