By misstake I forgot to change the “simple mode” switch after I hade added a new binding to my configuration and now I have lot of auto generated items in the system. How can I remove them?
I have try to delete them both with Paper UI and Habmin but they are still in the system. There are no error message.
I don’t know how to delete them because I don’t have any, but you may uncomment
org.eclipse.smarthome.links:autoLinks=false
in your /conf/services/runtime.cfg
then simple mode is disabled during openHAB restart by default:
https://github.com/openhab/openhab-distro/blob/master/distributions/distribution-resources/src/main/resources/conf/services/runtime.cfg
Thanks, i will change that line in my runtime.config.
I still have all this unwanted items in the system 
Hmmm, I generated an item and deleted it with PaperUI and it’s gone:
It only shows up again when I manually scan for things.
Isn’t that a “Thing” you are showing in your picture? I don´t have any problem to remove them. Which version of OH are you using? I am running snapshot build 512.
Upps, my mistake (just migrating from openHAB1).
My version: 507 snaphsot
smarthome:items clear
should do it:
Nah, the items are still there even if it says “removed” 
And yes, I restarted OH after the “removal”.
It must be some way to get rid of unwanted items beside totalt new install, or… ?
Now I have removed the 3 mapDb files from the “C:\OpenHAB2\userdata\mapdb” folder and all Items are gone. BUT
I thought that all configurations of Things and installed bindings were also in mapDB but these are still included after restart! Are these persisted somewere else?
Yes, these are persisted in a separate set of MapDB files. I’m not quite sure where those files are, somewhere in userdata. Search for “mapdb” in the userdata folder and I think you will find it. It will be the one that isn’t in persistence.