I restore the “dirty” copy of the IRIS.DAT files, then apply the incremental backup as documented for Online Backup. As shown in the picture, restarting the service before mounting and rejoining the database to the mirror can restore the mirror database to the point in time of dirty data. I think the mount method used here is the default value, and I don't want it to perform mirrorcatchup. Is there any other way to recover the mirrored database to the point in time of dirty data？