progressMonitor.beginLongOperation(false);
subMonitor = SubMonitor.convert(progressMonitor, Messages.DBManager_PROGRESS_WAIT, 20);
/* Startup Model Search to perform operation */
IModelSearch modelSearch = InternalOwl.getDefault().getPersistenceService().getModelSearch();
modelSearch.startup();
/* Trigger Clean Up */
if (!progressMonitor.isCanceled()) {
Activator.safeLogInfo("Start: Search Clean-Up"); //$NON-NLS-1$
modelSearch.cleanUp(subMonitor != null ? subMonitor.newChild(20) : new NullProgressMonitor());