# \[Solved\] RRD4J does not display Data over the time

**URL:** <https://community.openhab.org/t/solved-rrd4j-does-not-display-data-over-the-time/74009>\
**Category:** Persistence Services\
**Tags:** openhab2\
**Created:** [May 8, 2019, 12:26pm UTC](https://community.openhab.org/t/solved-rrd4j-does-not-display-data-over-the-time/74009 "2019-05-08T12:26:15Z")\
**Posts on this page:** 1\
**Showing post:** 19

<div class="post-metadata">

**Author:** ![opus](https://community.openhab.org/user_avatar/community.openhab.org/opus/32/55801_2.png) [@opus](https://community.openhab.org/u/opus)\
**Post date:** [May 11, 2019, 9:43am UTC](https://community.openhab.org/t/solved-rrd4j-does-not-display-data-over-the-time/74009/19 "2019-05-11T09:43:44Z")

</div>

You seem to have a syntax problem in your rrd4j.persist. We both might miss the difference by just looking at it. This is mine:

```
/ *RRD4J CONFIG*
//

Strategies {
    everyMinute : "0 * * * * ?"
    everyHour : "0 0 * * * ?"
    everyDay : "0 0 0 * * ?"
}
Items { temp_20 :strategy=everyMinute
}

```

We are not seeing any message that a value is persisted, try it with a new rrd4j.persist file, if the startup errors are gone we could move a step forward.

Regarding the other error, that rings a bell but I have to dig a bit deeper in my memory, although the “\_\_\_HK2\_Generated…” was not related to persistence (I think).  
What version of openHAB do you use and what hardware. It could be related with a problem when updating from 2.3 to 2.4 and the caused changes of bindings installed.  
[Edit]  
I found a relating thread started by me:

> [@\[SOLVED\] After upgrade to 2.4 stable I'm flooded with java.lang.IllegalStateException](https://community.openhab.org/t/after-upgrade-to-2-4-stable-im-flooded-with-java-lang-illegalstateexception/61567):
>
> I updated my system (raspi3b) to the OH2.4 stable and I’m now flooded with the following [WARN] Messages approx every minute. So far I’m unable to locate where it is coming from. 2018-12-29 13:49:44.917 [WARN] [org.eclipse.jetty.server.HttpChannel] - /rest/sitemaps/Haus/Haus javax.servlet.ServletException: javax.servlet.ServletException: A MultiException has 1 exceptions. They are: 1. java.lang.IllegalStateException: ServiceLocatorImpl(\_\_HK2\_Generated\_6,7,16588668) has been shut down....... …

The size of the log files is always growing, if they are to big, the old one is saved and a new one gets started. They are not deleted when openHAB is restarted.

---

_[View the full topic](https://community.openhab.org/t/solved-rrd4j-does-not-display-data-over-the-time/74009)._