if (systemName != null && system != null) {
logger.info("System '" + desc.getName() + "' already exist. Undeploying...");
system.undeploy();
}
systemName = _domainAdminMBean.deploySystemBundle(sdb);
system = (SystemAdminMBean) resolveJmx(systemName, SystemAdminMBean.class);
system.enable();
logger.info("System " + sdb.getDescriptor().getName() + " successfully deployed.");
}