oracle日志备份恢复

张兴康 · 发表于 2020-6-22 14:25:46

备份前数据：

SQL> select * from duanbb.t1;
ID NAME
---------- --------------------------------------------------
1 111

复制代码

rman全备：

RMAN> backup incremental level 0 database;
Starting backup at 09-JUL-15
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=63 device type=DISK
channel ORA_DISK_1: starting incremental level 0 datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00002 name=/home/oracle11/app/oracle11/oradata/orcl/sysaux01.dbf
input datafile file number=00001 name=/home/oracle11/app/oracle11/oradata/orcl/system01.dbf
input datafile file number=00003 name=/home/oracle11/app/oracle11/oradata/orcl/undotbs01.dbf
input datafile file number=00004 name=/home/oracle11/app/oracle11/oradata/orcl/users01.dbf
channel ORA_DISK_1: starting piece 1 at 09-JUL-15
channel ORA_DISK_1: finished piece 1 at 09-JUL-15
piece handle=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_nnnd0_TAG20150709T022947_bsw56w9p_.bkp tag=TAG20150709T022947 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:01:05
channel ORA_DISK_1: starting incremental level 0 datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
including current SPFILE in backup set
channel ORA_DISK_1: starting piece 1 at 09-JUL-15
channel ORA_DISK_1: finished piece 1 at 09-JUL-15
piece handle=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_ncsn0_TAG20150709T022947_bsw58yp1_.bkp tag=TAG20150709T022947 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 09-JUL-15

复制代码

插入一条数据，进行日志备份：

SQL> insert into duanbb.t1 values(2, '222');
1 row created.
SQL> commit;
Commit complete.
SQL> alter system switch logfile;
System altered.
SQL> alter system checkpoint;
SQL> select * from duanbb.t1;
ID NAME
---------- --------------------------------------------------
1 111
2 222

复制代码

RMAN> backup archivelog all delete input;
Starting backup at 09-JUL-15
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=3 RECID=473 STAMP=884557194
input archived log thread=1 sequence=4 RECID=474 STAMP=884559659
input archived log thread=1 sequence=5 RECID=475 STAMP=884568650
input archived log thread=1 sequence=6 RECID=476 STAMP=884571491
input archived log thread=1 sequence=7 RECID=477 STAMP=884572546
input archived log thread=1 sequence=8 RECID=478 STAMP=884572648
channel ORA_DISK_1: starting piece 1 at 09-JUL-15
channel ORA_DISK_1: finished piece 1 at 09-JUL-15
piece handle=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_annnn_TAG20150709T023728_bsw5o8w2_.bkp tag=TAG20150709T023728 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03
channel ORA_DISK_1: deleting archived log(s)
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_08/o1_mf_1_3_bsvpl9xj_.arc RECID=473 STAMP=884557194
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_08/o1_mf_1_4_bsvrzcfm_.arc RECID=474 STAMP=884559659
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_5_bsw1rb2n_.arc RECID=475 STAMP=884568650
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_6_bsw4k3pw_.arc RECID=476 STAMP=884571491
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_7_bsw5l2jy_.arc RECID=477 STAMP=884572546
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_8_bsw5o8fs_.arc RECID=478 STAMP=884572648
Finished backup at 09-JUL-15

复制代码

再次插入一条数据，备份日志：

SQL> insert into duanbb.t1 values(3, '333');
1 row created.
SQL> commit;
Commit complete.
SQL> alter system switch logfile;
System altered.
SQL> alter system checkpoint;

复制代码

RMAN> backup archivelog all delete input;
Starting backup at 09-JUL-15
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=9 RECID=479 STAMP=884572860
input archived log thread=1 sequence=10 RECID=480 STAMP=884573073
channel ORA_DISK_1: starting piece 1 at 09-JUL-15
channel ORA_DISK_1: finished piece 1 at 09-JUL-15
piece handle=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_annnn_TAG20150709T024433_bsw62kjx_.bkp tag=TAG20150709T024433 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
channel ORA_DISK_1: deleting archived log(s)
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_9_bsw5vwjy_.arc RECID=479 STAMP=884572860
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_10_bsw62kbg_.arc RECID=480 STAMP=884573073
Finished backup at 09-JUL-15

复制代码

三次备份生成的文件:

第一次:全备
o1_mf_nnnd0_TAG20150709T022947_bsw56w9p_.bkp
o1_mf_ncsn0_TAG20150709T022947_bsw58yp1_.bkp

第二次:日志
o1_mf_annnn_TAG20150709T023728_bsw5o8w2_.bkp

第三次: 日志
o1_mf_annnn_TAG20150709T024433_bsw62kjx_.bkp

完全恢复(自动恢复到最新状态)：

RMAN> startup mount
connected to target database (not started)
Oracle instance started
database mounted
Total System Global Area 1221992448 bytes
Fixed Size 1336176 bytes
Variable Size 939527312 bytes
Database Buffers 268435456 bytes
Redo Buffers 12693504 bytes

复制代码

RMAN> run {
2> allocate channel c1 type disk;
3> restore database;
4> recover database;
5> sql 'alter database open';
6> }
allocated channel: c1
channel c1: SID=63 device type=DISK
Starting restore at 09-JUL-15
channel c1: starting datafile backup set restore
channel c1: specifying datafile(s) to restore from backup set
channel c1: restoring datafile 00001 to /home/oracle11/app/oracle11/oradata/orcl/system01.dbf
channel c1: restoring datafile 00002 to /home/oracle11/app/oracle11/oradata/orcl/sysaux01.dbf
channel c1: restoring datafile 00003 to /home/oracle11/app/oracle11/oradata/orcl/undotbs01.dbf
channel c1: restoring datafile 00004 to /home/oracle11/app/oracle11/oradata/orcl/users01.dbf
channel c1: reading from backup piece /home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_nnnd0_TAG20150709T022947_bsw56w9p_.bkp
channel c1: piece handle=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_nnnd0_TAG20150709T022947_bsw56w9p_.bkp tag=TAG20150709T022947
channel c1: restored backup piece 1
channel c1: restore complete, elapsed time: 00:00:36
Finished restore at 09-JUL-15
Starting recover at 09-JUL-15
starting media recovery
channel c1: starting archived log restore to default destination
channel c1: restoring archived log
archived log thread=1 sequence=7
channel c1: restoring archived log
archived log thread=1 sequence=8
channel c1: reading from backup piece /home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_annnn_TAG20150709T023728_bsw5o8w2_.bkp
channel c1: piece handle=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_annnn_TAG20150709T023728_bsw5o8w2_.bkp tag=TAG20150709T023728
channel c1: restored backup piece 1
channel c1: restore complete, elapsed time: 00:00:01
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_7_bsw6gt1l_.arc thread=1 sequence=7
channel default: deleting archived log(s)
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_7_bsw6gt1l_.arc RECID=482 STAMP=884573466
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_8_bsw6gt1s_.arc thread=1 sequence=8
channel default: deleting archived log(s)
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_8_bsw6gt1s_.arc RECID=481 STAMP=884573466
media recovery complete, elapsed time: 00:00:01
channel c1: starting archived log restore to default destination
channel c1: restoring archived log
archived log thread=1 sequence=9
channel c1: restoring archived log
archived log thread=1 sequence=10
channel c1: reading from backup piece /home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_annnn_TAG20150709T024433_bsw62kjx_.bkp
channel c1: piece handle=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/backupset/2015_07_09/o1_mf_annnn_TAG20150709T024433_bsw62kjx_.bkp tag=TAG20150709T024433
channel c1: restored backup piece 1
channel c1: restore complete, elapsed time: 00:00:01
channel default: deleting archived log(s)
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_9_bsw6gwgm_.arc RECID=483 STAMP=884573468
channel default: deleting archived log(s)
archived log file name=/home/oracle11/app/oracle11/flash_recovery_area/ORCL/archivelog/2015_07_09/o1_mf_1_10_bsw6gwgq_.arc RECID=484 STAMP=884573468
Finished recover at 09-JUL-15
sql statement: alter database open
released channel: c1