backup archivelog all not backed up
backup archivelog all not backed up;
这条命令可以用来备份没有备份过的归档日志,同时不会备份已经备份过的归档日志。下面是具体用法。
第一次备份归档日志
- RMAN> backup archivelog all not backed up;
- Starting backup at 12-MAR-16
- current log archived
- using channel ORA_DISK_1
- channel ORA_DISK_1: starting archived log backup set
- channel ORA_DISK_1: specifying archived log(s) in backup set
- input archived log thread=1 sequence=5 RECID=1 STAMP=906200876
- input archived log thread=1 sequence=6 RECID=2 STAMP=906275330
- input archived log thread=1 sequence=7 RECID=3 STAMP=906275462
- input archived log thread=1 sequence=8 RECID=4 STAMP=906275486
- input archived log thread=1 sequence=9 RECID=5 STAMP=906275493
- input archived log thread=1 sequence=10 RECID=6 STAMP=906275503
- input archived log thread=1 sequence=11 RECID=7 STAMP=906275511
- input archived log thread=1 sequence=12 RECID=8 STAMP=906275530
- input archived log thread=1 sequence=13 RECID=9 STAMP=906275556
- input archived log thread=1 sequence=14 RECID=10 STAMP=906275574
- input archived log thread=1 sequence=15 RECID=11 STAMP=906275592
- input archived log thread=1 sequence=16 RECID=12 STAMP=906275612
- input archived log thread=1 sequence=17 RECID=13 STAMP=906275634
- input archived log thread=1 sequence=18 RECID=14 STAMP=906275673
- input archived log thread=1 sequence=19 RECID=15 STAMP=906275691
- input archived log thread=1 sequence=20 RECID=16 STAMP=906275730
- input archived log thread=1 sequence=21 RECID=17 STAMP=906275892
- input archived log thread=1 sequence=22 RECID=18 STAMP=906285113
- input archived log thread=1 sequence=23 RECID=19 STAMP=906285372
- input archived log thread=1 sequence=24 RECID=20 STAMP=906287723
- input archived log thread=1 sequence=25 RECID=21 STAMP=906289627
- input archived log thread=1 sequence=26 RECID=22 STAMP=906291279
- input archived log thread=1 sequence=27 RECID=23 STAMP=906291412
- input archived log thread=1 sequence=28 RECID=24 STAMP=906291557
- input archived log thread=1 sequence=29 RECID=25 STAMP=906291740
- input archived log thread=1 sequence=30 RECID=26 STAMP=906292245
- channel ORA_DISK_1: starting piece 1 at 12-MAR-16
- channel ORA_DISK_1: finished piece 1 at 12-MAR-16
- piece handle=/u01/app/oracle/fast_recovery_area/ORCL/backupset/2016_03_12/o1_mf_annnn_TAG20160312T115045_cg74jop2_.bkp tag=TAG20160312T115045 comment=NONE
- channel ORA_DISK_1: backup set complete, elapsed time: 00:00:15
- Finished backup at 12-MAR-16
第二次备份归档日志
- RMAN> backup archivelog all not backed up;
- Starting backup at 12-MAR-16
- current log archived
- using channel ORA_DISK_1
- skipping archived logs of thread 1 from sequence 5 to 30; already backed up
- channel ORA_DISK_1: starting archived log backup set
- channel ORA_DISK_1: specifying archived log(s) in backup set
- input archived log thread=1 sequence=31 RECID=27 STAMP=906292476
- channel ORA_DISK_1: starting piece 1 at 12-MAR-16
- channel ORA_DISK_1: finished piece 1 at 12-MAR-16
- piece handle=/u01/app/oracle/fast_recovery_area/ORCL/backupset/2016_03_12/o1_mf_annnn_TAG20160312T115436_cg74qwtq_.bkp tag=TAG20160312T115436 comment=NONE
- channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
- Finished backup at 12-MAR-16
可以看到,除了新产生的31号归档,前面的归档日志均已跳过备份。
将命令稍微修改一下
- RMAN> backup archivelog all not backed up 2 times;
- Starting backup at 12-MAR-16
- current log archived
- using channel ORA_DISK_1
- channel ORA_DISK_1: starting archived log backup set
- channel ORA_DISK_1: specifying archived log(s) in backup set
- input archived log thread=1 sequence=5 RECID=1 STAMP=906200876
- input archived log thread=1 sequence=6 RECID=2 STAMP=906275330
- input archived log thread=1 sequence=7 RECID=3 STAMP=906275462
- input archived log thread=1 sequence=8 RECID=4 STAMP=906275486
- input archived log thread=1 sequence=9 RECID=5 STAMP=906275493
- input archived log thread=1 sequence=10 RECID=6 STAMP=906275503
- input archived log thread=1 sequence=11 RECID=7 STAMP=906275511
- input archived log thread=1 sequence=12 RECID=8 STAMP=906275530
- input archived log thread=1 sequence=13 RECID=9 STAMP=906275556
- input archived log thread=1 sequence=14 RECID=10 STAMP=906275574
- input archived log thread=1 sequence=15 RECID=11 STAMP=906275592
- input archived log thread=1 sequence=16 RECID=12 STAMP=906275612
- input archived log thread=1 sequence=17 RECID=13 STAMP=906275634
- input archived log thread=1 sequence=18 RECID=14 STAMP=906275673
- input archived log thread=1 sequence=19 RECID=15 STAMP=906275691
- input archived log thread=1 sequence=20 RECID=16 STAMP=906275730
- input archived log thread=1 sequence=21 RECID=17 STAMP=906275892
- input archived log thread=1 sequence=22 RECID=18 STAMP=906285113
- input archived log thread=1 sequence=23 RECID=19 STAMP=906285372
- input archived log thread=1 sequence=24 RECID=20 STAMP=906287723
- input archived log thread=1 sequence=25 RECID=21 STAMP=906289627
- input archived log thread=1 sequence=26 RECID=22 STAMP=906291279
- input archived log thread=1 sequence=27 RECID=23 STAMP=906291412
- input archived log thread=1 sequence=28 RECID=24 STAMP=906291557
- input archived log thread=1 sequence=29 RECID=25 STAMP=906291740
- input archived log thread=1 sequence=30 RECID=26 STAMP=906292245
- input archived log thread=1 sequence=31 RECID=27 STAMP=906292476
- input archived log thread=1 sequence=32 RECID=28 STAMP=906292679
- channel ORA_DISK_1: starting piece 1 at 12-MAR-16
- channel ORA_DISK_1: finished piece 1 at 12-MAR-16
- piece handle=/u01/app/oracle/fast_recovery_area/ORCL/backupset/2016_03_12/o1_mf_annnn_TAG20160312T115759_cg74y7vy_.bkp tag=TAG20160312T115759 comment=NONE
- channel ORA_DISK_1: backup set complete, elapsed time: 00:00:15
- Finished backup at 12-MAR-16
该命令的意思是:备份没有备份过两次的归档日志,前面的所有归档日志只备份过一次,所以都备份。
再看下面的命令
- RMAN> backup archivelog all not backed up 1 times;
- Starting backup at 12-MAR-16
- current log archived
- using channel ORA_DISK_1
- skipping archived logs of thread 1 from sequence 5 to 32; already backed up
- channel ORA_DISK_1: starting archived log backup set
- channel ORA_DISK_1: specifying archived log(s) in backup set
- input archived log thread=1 sequence=33 RECID=29 STAMP=906292883
- channel ORA_DISK_1: starting piece 1 at 12-MAR-16
- channel ORA_DISK_1: finished piece 1 at 12-MAR-16
- piece handle=/u01/app/oracle/fast_recovery_area/ORCL/backupset/2016_03_12/o1_mf_annnn_TAG20160312T120123_cg754mrr_.bkp tag=TAG20160312T120123 comment=NONE
- channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
- Finished backup at 12-MAR-16
1 times与不加1 times的效果是一样的,即备份过一次及以上的归档都不备份,在此处,新产生的33号归档日志没有备份过,因此备份33号归档日志。
转自:http://blog.itpub.net/29067253/viewspace-2056040/
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