Hi Gert,
Thanks for your communication.
The Issue can be resolved by creating the Dbvisit Database Repository (DDR) again.
On Primary Server:
Step1) cd /usr/local/dbvisit/standby
Step2) ./dbvisit_setup
Step3) Choose option "4) New Dbvisit Database repository (DDR) setup"
select the DDC name
Note: You will need to apply the license again, this can be done by below command:
./dbvisit -lic <DDC> <LICENSE\_KEY>
For more Information please see below document:
https://dbvisit.atlassian.net/wiki/pages/viewpage.action?pageId=44007434
Let us know if you have any questions.