1.Ask another person to look over your shoulder or ask another person to recreate the problem. This can decrease the possibility that it is an environment error or operation error instead of a real bug.
2.If you failed to run a testcase, and somehow it runs again. Keep investigate. Compare the difference and see why it works the second time. It could be a potential bug.
3.Write feedback in Bugzilla for anything your tried.
4.If the testcase failed on non-windows system, try windows.
5.If the testcase failed on one of the J9 config like jclFoundation, try another J9 config like jclMax.