[Oracle Life Philosophy] RMAN Incremental backup and life principles

[Oracle Life Philosophy] RMAN Incremental Backup and life principles when practicing RMAN Incremental Backup, refer to ocp tk 042: apparently, based on the answer, archive log is not in the column, even if you hit the south wall, you also want to test [plain] RMAN> backup incremental level 0 archivelog all; starting backup at 30-MAR-13 current log archived using channel ORA_DISK_1 channel ORA_DISK_1: starting archive log backupset channel ORA_DISK_1: specifying archive log (s) in backup set input archive log thread = 1 sequence = 4 recid = 2 sta Mp = 811463043 channel ORA_DISK_1: starting piece 1 at 30-MAR-13 channel ORA_DISK_1: finished piece 1 at 30-MAR-13 piece handle =/u01/app/oracle/flash_recovery_area/ORACLE10G/backupset/2013_03_30/o1_mf_annnn_TAG20130330T222403_8ofxd54r _. bkp tag = TAG20130330T222403 comment = NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02 Finished backup at 30-MAR-13 RMAN> backup incremental level 1 Archivelog all; Starting backup at 30-MAR-13 current log archived using channel ORA_DISK_1 channel ORA_DISK_1: starting archive log backupset channel ORA_DISK_1: specifying archive log (s) in backup set input archive log thread = 1 sequence = 4 recid = 2 stamp = 811463043 input archive log thread = 1 sequence = 5 recid = 3 stamp = 811463081 channel ORA_DISK_1: starting piece 1 at 30-MAR-13 channel ORA_DISK_1: fini Shed piece 1 at 30-MAR-13 piece handle =/u01/app/oracle/flash_recovery_area/ORACLE10G/backupset/2013_03_30/o1_mf_annnn_TAG20130330T222442_8ofxfccb _. bkp tag = TAG20130330T222442 comment = NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02 Finished backup at 30-MAR-13 !! The answer is wrong ??!! Not necessarily, because the answer is Incremental backup of archived logs based on business rules rather than semantic syntaxes, then the saying goes-Take off your pants and fart. What's wrong with many things in your life? based on the "World of human feelings", your original practice is completely correct, but you did not follow the "potential rules", then you are wrong, so, do not care too much about right and wrong, because that is the original what do you feel if you have no definition, pass by, or pass? If yes, can you write down or record this idea?