}
try { // to connect to master database
if (!hasMasterSettingsFile) {
this.masterConnection = new SOSMySQLConnection( this.masterProperties.getProperty("driver"),
this.masterProperties.getProperty("url"),
this.masterProperties.getProperty("user"),
this.masterProperties.getProperty("password") );
} else {
this.masterConnection = SOSConnection.createInstance(connectionSettingsFilename, (SOSLogger) new SOSSchedulerLogger(spooler_log));