I am currently testing a data guard environment. After a switchover, which is performed successfully, I can see the following error in the alert.log of the new stand:
ora-49204: recursive dde invocation at phase i This error is followed by ora-01110. This happens for all data files.
The standby is running in open mode read only. I checked the database for logical and physical block corruption via rman. Everything looks good.
How do I have to interpret this error? I am using the base version of Oracle 12cR2.
I would appreciate, if anyone could give me some hint.