void readBack(String configfile, long startTime) throws IOException {
DOMConfigurator jc2 = new DOMConfigurator();
InputStream is = FullCycleDBTest.class.getResourceAsStream(configfile);
jc2.doConfigure(is, lrRead);
is.close();
// wait a little to allow events to be read
try { Thread.sleep(3100); } catch(Exception e) {}
VectorAppender va = (VectorAppender) lrRead.getRootLogger().getAppender("VECTOR");