(Les16 执行数据库恢复)-控制文件恢复

测试丢失所有控制文件恢复[20180517]

 

 

rman target /

 

show all;

 

configure channel 1 device type disk format '/u01/backup/rman_backup_%U.bak';

 

backup current controlfile;

 

 

连接到RMAN

[oracle@t-xi-oracle01 archive]$ rman target /

 

为磁盘备份设定路径和命名规则

RMAN> configure channel 1 device type disk format '/u01/backup/rman_backup_%U.bak';

 

new RMAN configuration parameters:

CONFIGURE CHANNEL 1 DEVICE TYPE DISK FORMAT   '/u01/backup/rman_backup_%U.bak';

new RMAN configuration parameters are successfully stored

 

查看当前所有的配置

RMAN> show all;

 

using target database control file instead of recovery catalog

RMAN configuration parameters for database with db_unique_name XIOCPT0 are:

CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default

CONFIGURE BACKUP OPTIMIZATION OFF; # default

CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default

CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default

CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE MAXSETSIZE TO UNLIMITED; # default

CONFIGURE ENCRYPTION FOR DATABASE OFF; # default

CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default

CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/snapcf_xiocpt0.f'; # default

 

备份当前控制文件

RMAN> backup current controlfile;

 

Starting backup at 17-MAY-18

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=41 device type=DISK

channel ORA_DISK_1: starting full datafile backup set

channel ORA_DISK_1: specifying datafile(s) in backup set

including current control file in backup set

channel ORA_DISK_1: starting piece 1 at 17-MAY-18

channel ORA_DISK_1: finished piece 1 at 17-MAY-18

piece handle=/u01/backup/rman_backup_01t34led_1_1.bak tag=TAG20180517T155453 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

Finished backup at 17-MAY-18

 

查看备份

RMAN> list backup; 或 list backup of controlfile;

 

 

 

List of Backup Sets

===================

 

 

BS Key  Type LV Size       Device Type Elapsed Time Completion Time

------- ---- -- ---------- ----------- ------------ ---------------

1       Full    9.64M      DISK        00:00:01     17-MAY-18

        BP Key: 1   Status: AVAILABLE  Compressed: NO  Tag: TAG20180517T155453

        Piece Name: /u01/backup/rman_backup_01t34led_1_1.bak

  Control File Included: Ckp SCN: 990446       Ckp time: 17-MAY-18

 

 

select * from v$controfile;

 

手动删除控制文件

SQL> !rm -rf /u01/app/oracle/oradata/xiocpt0/control01.ctl /u01/app/oracle/fast_recovery_area/xiocpt0/control02.ctl

 

Errors in file /u01/app/oracle/diag/rdbms/xiocpt0/xiocpt0/trace/xiocpt0_m001_1649.trc:

ORA-00210: cannot open the specified control file

ORA-00202: control file: '/u01/app/oracle/oradata/xiocpt0/control01.ctl'

ORA-27041: unable to open file

Linux-x86_64 Error: 2: No such file or directory

Additional information: 3

 

数据库关闭

shutdown abort

 

启动到nomount状态，从备份档中恢复控制文件，注意此时控制文件不是最新的

    

[oracle@t-xi-oracle01 archive]$ rman target /

RMAN>restore controlfile from  '/u01/backup/rman_backup_01t34led_1_1.bak';

Starting restore at 17-MAY-18
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=20 device type=DISK

channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/u01/app/oracle/oradata/xiocpt0/control01.ctl
output file name=/u01/app/oracle/fast_recovery_area/xiocpt0/control02.ctl
Finished restore at 17-MAY-18

 

数据库启动MOUNT状态

alter database mount;

 

创建控制文件到trace文件中

alter database backup controlfile to trace as '/u01/backup_controlfile.ctl';

 

再次关闭数据库，手动恢复控制文件，数据库完整恢复。

shutdown immedaite

 

注意使用NORESETLOGS 

 

STARTUP NOMOUNT

CREATE CONTROLFILE REUSE DATABASE "XIOCPT0" NORESETLOGS  ARCHIVELOG

    MAXLOGFILES 16

    MAXLOGMEMBERS 3

    MAXDATAFILES 100

    MAXINSTANCES 8

    MAXLOGHISTORY 292

LOGFILE

  GROUP 1 '/u01/app/oracle/oradata/xiocpt0/redo01.log'  SIZE 50M BLOCKSIZE 512,

  GROUP 2 '/u01/app/oracle/oradata/xiocpt0/redo02.log'  SIZE 50M BLOCKSIZE 512,

  GROUP 3 '/u01/app/oracle/oradata/xiocpt0/redo03.log'  SIZE 50M BLOCKSIZE 512

-- STANDBY LOGFILE

DATAFILE

  '/u01/app/oracle/oradata/xiocpt0/system01.dbf',

  '/u01/app/oracle/oradata/xiocpt0/sysaux01.dbf',

  '/u01/app/oracle/oradata/xiocpt0/undotbs01.dbf',

  '/u01/app/oracle/oradata/xiocpt0/users01.dbf'

CHARACTER SET AL32UTF8

;

 

 

 

RECOVER DATABASE

 

 

ALTER SYSTEM ARCHIVE LOG ALL;

 

 

ALTER DATABASE OPEN;

 

 

ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/xiocpt0/temp01.dbf' REUSE;