最近再学习rman。
完全备份后 修改数据 再恢复，发现恢复无效。
环境:vm虚拟机 centos6.7 oracle12c
操作数据:
1.**启用archivelog模式: **
[root@localhost ~]# su - oracle
-bash-4.1$ sqlplus / as sysdba
SQL*Plus: Release 12.2.0.1.0 Production on Wed Apr 24 01:53:58 2019
Copyright (c) 1982, 2016, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination /home/oracle/product/12.2.0/db_1/dbs/arch
Oldest online log sequence 1
Next log sequence to archive 1
Current log sequence 1
SQL>
2.进入rman
Last login: Wed Apr 24 01:53:04 2019 from 192.168.30.1
[root@localhost ~]# su - oracle
-bash-4.1$ rman target / nocatalog
Recovery Manager: Release 12.2.0.1.0 - Production on Wed Apr 24 01:57:30 2019
Copyright (c) 1982, 2017, Oracle and/or its affiliates. All rights reserved.
connected to target database: LESP (DBID=1750011068)
using target database control file instead of recovery catalog
RMAN>
3.全备份
RMAN> backup database;
Starting backup at 24-APR-19
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=55 device type=DISK
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00001 name=/home/oracle/oradata/lesp/system01.dbf
input datafile file number=00003 name=/home/oracle/oradata/lesp/sysaux01.dbf
input datafile file number=00004 name=/home/oracle/oradata/lesp/undotbs01.dbf
input datafile file number=00005 name=/home/oracle/oradata/lesp/ts_data_lesp_etl_001.dbf
input datafile file number=00007 name=/home/oracle/oradata/lesp/users01.dbf
channel ORA_DISK_1: starting piece 1 at 24-APR-19
channel ORA_DISK_1: finished piece 1 at 24-APR-19
piece handle=/home/oracle/product/12.2.0/db_1/dbs/34tvomv8_1_1 tag=TAG20190424T015904 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45
Finished backup at 24-APR-19
Starting Control File and SPFILE Autobackup at 24-APR-19
piece handle=/home/oracle/product/12.2.0/db_1/dbs/c-1750011068-20190424-0a comment=NONE
Finished Control File and SPFILE Autobackup at 24-APR-19
4.查看备份信息
RMAN> list backupset ;
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
106 Full 1.07G DISK 00:00:43 24-APR-19
BP Key: 106 Status: AVAILABLE Compressed: NO Tag: TAG20190424T015904
Piece Name: /home/oracle/product/12.2.0/db_1/dbs/34tvomv8_1_1
List of Datafiles in backup set 106
File LV Type Ckp SCN Ckp Time Abs Fuz SCN Sparse Name
---- -- ---- ---------- --------- ----------- ------ ----
1 Full 2016498 24-APR-19 NO /home/oracle/oradata/lesp/system01.dbf
3 Full 2016498 24-APR-19 NO /home/oracle/oradata/lesp/sysaux01.dbf
4 Full 2016498 24-APR-19 NO /home/oracle/oradata/lesp/undotbs01.dbf
5 Full 2016498 24-APR-19 NO /home/oracle/oradata/lesp/ts_data_lesp_etl_001.dbf
7 Full 2016498 24-APR-19 NO /home/oracle/oradata/lesp/users01.dbf
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
107 Full 10.66M DISK 00:00:00 24-APR-19
BP Key: 107 Status: AVAILABLE Compressed: NO Tag: TAG20190424T015950
Piece Name: /home/oracle/product/12.2.0/db_1/dbs/c-1750011068-20190424-0a
SPFILE Included: Modification time: 24-APR-19
SPFILE db_unique_name: LESP
Control File Included: Ckp SCN: 2016523 Ckp time: 24-APR-19
6.修改数据库数据:
之前:
SQL> select count(1) from tabs;
COUNT(1)
----------
0
创建一个表:
SQL> select count(1) from tabs;
COUNT(1)
----------
1
7.恢复:
1.nomount
RMAN> shutdown abort;
Oracle instance shut down
RMAN> startup nomount;
connected to target database (not started)
Oracle instance started
Total System Global Area 784334848 bytes
Fixed Size 8625608 bytes
Variable Size 658506296 bytes
Database Buffers 113246208 bytes
Redo Buffers 3956736 bytes
7.2.restore controlfile
RMAN> restore controlfile from '/home/oracle/product/12.2.0/db_1/dbs/c-1750011068-20190424-0a'
2> ;
Starting restore at 24-APR-19
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=37 device type=DISK
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/home/oracle/oradata/lesp/control01.ctl
output file name=/home/oracle/oradata/lesp/control02.ctl
Finished restore at 24-APR-19
7.3 mount /restore/ recover
RMAN> alter database mount;
Statement processed
released channel: ORA_DISK_1
RMAN> restore database;
Starting restore at 24-APR-19
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=37 device type=DISK
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00001 to /home/oracle/oradata/lesp/system01.dbf
channel ORA_DISK_1: restoring datafile 00003 to /home/oracle/oradata/lesp/sysaux01.dbf
channel ORA_DISK_1: restoring datafile 00004 to /home/oracle/oradata/lesp/undotbs01.dbf
channel ORA_DISK_1: restoring datafile 00005 to /home/oracle/oradata/lesp/ts_data_lesp_etl_001.dbf
channel ORA_DISK_1: restoring datafile 00007 to /home/oracle/oradata/lesp/users01.dbf
channel ORA_DISK_1: reading from backup piece /home/oracle/product/12.2.0/db_1/dbs/34tvomv8_1_1
channel ORA_DISK_1: piece handle=/home/oracle/product/12.2.0/db_1/dbs/34tvomv8_1_1 tag=TAG20190424T015904
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:36
Finished restore at 24-APR-19
RMAN> recover database;
Starting recover at 24-APR-19
using channel ORA_DISK_1
starting media recovery
archived log for thread 1 with sequence 1 is already on disk as file /home/oracle/oradata/lesp/redo01.log
archived log file name=/home/oracle/oradata/lesp/redo01.log thread=1 sequence=1
media recovery complete, elapsed time: 00:00:01
Finished recover at 24-APR-19
RMAN> alter database open resetlogs;
Statement processed
RMAN>
8.查看效果;
SQL> select count(1) from tabs;
COUNT(1)
----------
1
没有恢复 还是备份之后的数据
