DBFluteSystem.unlock();
        DBFluteSystem.setFinalTimeZoneProvider(createFinalTimeZoneProvider());
        DBFluteSystem.lock();
    }

    protected DfFinalTimeZoneProvider createFinalTimeZoneProvider() {
        return new DfFinalTimeZoneProvider() {
            protected final TimeZone provided = FessUserTimeZoneProcessProvider.centralTimeZone;

            @Override
            public TimeZone provide() {