Some tests need an access to classes that don't exist in compact profiles less than 3 and fail.
Typical message:

java.lang.NoClassDefFoundError: java/lang/management/ManagementFactory
at com.oracle.java.testlibrary.ProcessTools.getProcessId(ProcessTools.java:95)
at JcmdSummaryDiff.main(JcmdSummaryDiff.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: java.lang.management.ManagementFactory
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 8 more

One need to remove such tests from execution on compacts.