OCI-38899
compatible initialization parameter must be at least release 23.0.0.0.0 in order to use DB_FLASHBACK_LOG_DEST
Cause
The use of DB_FLASHBACK_LOG_DEST requires Oracle Database 23ai compatibility but currently the compatible initialization parameter was not set to release 23.0.0.0.0 or later version.
Action
Set the compatible parameter in initialization parameter file to release 23.0.0.0.0 or later version.