An unexpected error Referral The backend userRoot can not serve the request because it is disabled o

Hi all,

we get the following error message in OUD-error file:

--> An unexpected error Referral The backend userRoot can not serve the request because it is disabled occurred when searching for generation id for domain : o=

What is wrong?

Rebuild-index Command Fails if Attribute Index has not been Defined Yet (Doc ID 1997521.1) says

"In order to restore access to the userRoot backend, the Directory Server instance must be restarted"

Is there any solution to solve that in onlinemode?

Thanks in advance,

Moh