Object test of RMAN Incremental Backup

When practicing RMAN Incremental backup, refer to ocp tk 042:

For RMAN Incremental Backup objects, the official network is extracted as follows:

You can make incremental backups of databases, individual tablespaces or datafiles.

Apparently, the answer based on 96 questions, archive log is not in the column, and I want to test it even if I hit the south wall.

RMAN> backup incremental level 0 archivelog all;Starting backup at 30-MAR-13current log archivedusing channel ORA_DISK_1channel ORA_DISK_1: starting archive log backupsetchannel ORA_DISK_1: specifying archive log(s) in backup setinput archive log thread=1 sequence=4 recid=2 stamp=811463043channel ORA_DISK_1: starting piece 1 at 30-MAR-13channel ORA_DISK_1: finished piece 1 at 30-MAR-13piece handle=/u01/app/oracle/flash_recovery_area/ORACLE10G/backupset/2013_03_30/o1_mf_annnn_TAG20130330T222403_8ofxd54r_.bkp tag=TAG20130330T222403 comment=NONEchannel ORA_DISK_1: backup set complete, elapsed time: 00:00:02Finished backup at 30-MAR-13RMAN> backup incremental level 1 archivelog all;Starting backup at 30-MAR-13current log archivedusing channel ORA_DISK_1channel ORA_DISK_1: starting archive log backupsetchannel ORA_DISK_1: specifying archive log(s) in backup setinput archive log thread=1 sequence=4 recid=2 stamp=811463043input archive log thread=1 sequence=5 recid=3 stamp=811463081channel ORA_DISK_1: starting piece 1 at 30-MAR-13channel ORA_DISK_1: finished piece 1 at 30-MAR-13piece handle=/u01/app/oracle/flash_recovery_area/ORACLE10G/backupset/2013_03_30/o1_mf_annnn_TAG20130330T222442_8ofxfccb_.bkp tag=TAG20130330T222442 comment=NONEchannel ORA_DISK_1: backup set complete, elapsed time: 00:00:02Finished backup at 30-MAR-13

Success !! The answer is wrong ??!!

Not necessarily ,,,

Because the answer is based on business rules rather than semantic syntax

Incremental backup of archived logs should be followed by the slang-Take off your pants and fart

In life,The right and wrong of many things are based on the "World of human feelings,
You have done exactly the right thing, but you have not followed the "potential rules", then you are wrong,
Therefore, do not care too much about right or wrong, because there is no definition at the beginning,