9i R2 does not have Real Time Apply, the documentation does not clearly mention under what circumstances the status of the standby redo logs will be unassigned.
The standby redo logs will only be used if LGWR is used to transfer the redo logs from primary to the standby, if using ARCH, which is the default, the standby logs will never be used.
Please clarify or validate. I was asked to review and validate a standby for an old legacy application on 9i R2, and this is what I am seeing there.
Thank You,
Matt