Oracle12c RAC RMAN異機恢復

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#編輯pfile文件initspdb.ora

vi /oracle/app/oracle/product/12.2.0/db_1/dbs/initspdb.ora

audit_file_dest='/oracle/app/oracle/admin/spdb/adump'
audit_trail='db'
compatible='12.2.0'
control_files='/oracle/app/oracle/oradata/spdb/control.ctl'
db_block_size=8192
db_name='spdb'
diagnostic_dest='/oracle/app/oracle'
dispatchers='(PROTOCOL=TCP) (SERVICE=spdbXDB)'
enable_pluggable_database=true
log_archive_dest_1='LOCATION=/orabak/archivelog'
open_cursors=300
pga_aggregate_target=5120m
processes=400
remote_login_passwordfile='exclusive'
sga_target=10240m
undo_tablespace='UNDOTBS1'
db_file_name_convert='+DATADG/SPDB/DATAFILE','/oracle/app/oracle/oradata/spdb/','+DATADG/SPDB/8E80F930196B6100E053E200A8C0AF9F/DATAFILE','/oracle/app/oracle/oradata/spdb/pdbseed/','+DATADG/SPDB/8E81C7A967C43CB7E053E300A8C06223/DATAFILE','/oracle/app/oracle/oradata/spdb/spdb1pdb/','+DATADG/SPDB/93BFEF75138BC79EE053E300A8C08BA1/DATAFILE','/oracle/app/oracle/oradata/spdb/kdlxpdb

#創建目錄

mkdir -p /oracle/app/oracle/admin/spdb/adump

mkdir -p /orabak/archivelog

 

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#創建spfile

SQL> create spfile from pfile='/oracle/app/oracle/product/12.2.0/db_1/dbs/initspdb.ora'

#進到nomount狀態

SQL> startup nomount

--#恢復spfile文件

--RMAN> restore spfile from '/orabak/spfile_ORCL_1026474723_1096_1';

SQL> shutdown abort

cd /oracle/app/oracle/product/12.2.0/db_1/dbs/

rm initspdb.ora

$strings spfilespdb.ora

SQL> startup nomount

 

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#恢復control文件

RMAN> restore controlfile from '/orabak/control_ORCL_1026474721_1095_1';

#進到mount狀態

SQL> alter database mount;

#刪除backup

RMAN> list backup;

RMAN> crosscheck backup;

RMAN> delete backup;

RMAN> list backup;

 

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#恢復dbfile全備文件

RMAN> catalog start with '/orabak/backup/';

RMAN> list backup;

rman target /
run{
allocate channel ch1 type disk;
allocate channel ch2 type disk;
set newname for datafile 1 to '/oracle/app/oracle/oradata/spdb/system.dbf';
set newname for datafile 3 to '/oracle/app/oracle/oradata/spdb/sysaux.dbf';
set newname for datafile 5 to '/oracle/app/oracle/oradata/spdb/undotbs1.dbf';
set newname for datafile 7 to '/oracle/app/oracle/oradata/spdb/undotbs2.dbf';
set newname for datafile 8 to '/oracle/app/oracle/oradata/spdb/users.dbf';
set newname for datafile 2 to '/oracle/app/oracle/oradata/spdb/pdbseed/system.dbf';
set newname for datafile 4 to '/oracle/app/oracle/oradata/spdb/pdbseed/sysaux.dbf';
set newname for datafile 6 to '/oracle/app/oracle/oradata/spdb/pdbseed/undotbs1.dbf';
set newname for datafile 9 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/system.dbf';
set newname for datafile 10 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/sysaux.dbf';
set newname for datafile 11 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/undotbs1.dbf';
set newname for datafile 12 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/undo_2.dbf';
set newname for datafile 13 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/users.dbf';
set newname for datafile 14 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/spdata1.dbf';
set newname for datafile 15 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/spdata2.dbf';
set newname for datafile 16 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/managedata1.dbf';
set newname for datafile 18 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/managedata2.dbf';
set newname for datafile 17 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/clouddata1.dbf';
set newname for datafile 19 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/clouddata2.dbf';
set newname for datafile 20 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/cloudtestdata1.dbf';
set newname for datafile 21 to '/oracle/app/oracle/oradata/spdb/spdb1pdb/cloudtestdata2.dbf';
set newname for datafile 28 to '/oracle/app/oracle/oradata/spdb/kdlxpdb/system.dbf';
set newname for datafile 29 to '/oracle/app/oracle/oradata/spdb/kdlxpdb/sysaux.dbf';
set newname for datafile 30 to '/oracle/app/oracle/oradata/spdb/kdlxpdb/undotbs1.dbf';
restore database;
switch datafile all;
switch tempfile all;
release channel ch1;
release channel ch2;
}

RMAN> recover database;

#recover報錯，需要指定SCN

RMAN> recover database until scn 233086903;　　　　　　#全量備份的SCN

#將歸檔日志及增量備份數據文件拷貝至/orabak/backup/目錄並追加

RMAN> catalog start with '/orabak/backup/';

RMAN> list backup;

#找到對應增量備份節點的SCN進行恢復，建議根據備份策略依次恢復（優先讀取增量文件其次歸檔日志）。

RMAN> recover database until scn 234809384;　　　　　　#歸檔日志恢復第一天增量

 

RMAN> recover database until scn 237672420;　　　　#增量文件及歸檔日志恢復第二天增量

 

#第二天增量恢復完成，接着恢復第三天增量報錯。備份期間生成過數據文件，可通過恢復單獨數據文件恢復，因隔天忘記恢復第三天增量數據。

RMAN> recover database until scn 241710899;　　　　　　#第三天增量恢復

RMAN> restore datafile 31; 

 

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#數據庫open

SQL> alter database open;

SQL> alter database open resetlogs;

#ASM磁盤和集群報錯，需要調整控制文件

SQL> alter database backup controlfile to trace as '/home/oracle/ctl.control';

SQL> shutdown abort;

vi /home/oracle/ctl.control

STARTUP NOMOUNT
CREATE CONTROLFILE REUSE DATABASE "SPDB" RESETLOGS ARCHIVELOG
    MAXLOGFILES 192
    MAXLOGMEMBERS 3
    MAXDATAFILES 1024
    MAXINSTANCES 32
    MAXLOGHISTORY 584
LOGFILE
  GROUP 1 '/oracle/app/oracle/oradata/spdb/redo1.log'  SIZE 200M BLOCKSIZE 512,
  GROUP 2 '/oracle/app/oracle/oradata/spdb/redo2.log'  SIZE 200M BLOCKSIZE 512
-- STANDBY LOGFILE
DATAFILE
  '/oracle/app/oracle/oradata/spdb/system.dbf',
  '/oracle/app/oracle/oradata/spdb/pdbseed/system.dbf',
  '/oracle/app/oracle/oradata/spdb/sysaux.dbf',
  '/oracle/app/oracle/oradata/spdb/pdbseed/sysaux.dbf',
  '/oracle/app/oracle/oradata/spdb/undotbs1.dbf',
  '/oracle/app/oracle/oradata/spdb/pdbseed/undotbs1.dbf',
  '/oracle/app/oracle/oradata/spdb/undotbs2.dbf',
  '/oracle/app/oracle/oradata/spdb/users.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/system.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/sysaux.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/undotbs1.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/undo_2.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/users.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/spdata1.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/spdata2.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/managedata1.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/clouddata1.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/managedata2.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/clouddata2.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/cloudtestdata1.dbf',
  '/oracle/app/oracle/oradata/spdb/spdb1pdb/cloudtestdata2.dbf',
  '/oracle/app/oracle/oradata/spdb/kdlxpdb/system.dbf',
  '/oracle/app/oracle/oradata/spdb/kdlxpdb/sysaux.dbf',
  '/oracle/app/oracle/oradata/spdb/kdlxpdb/undotbs1.dbf'
CHARACTER SET AL32UTF8
;
--RECOVER DATABASE

--All logs need archiving and a log switch is needed.
--ALTER SYSTEM ARCHIVE LOG ALL;

-- Database can now be opened normally. --ALTER DATABASE OPEN; -- Open all the PDBs. --ALTER PLUGGABLE DATABASE ALL OPEN;

#編輯控制文件，重新生成控制文件

SQL> @/home/oracle/ctl.control

SQL> alter database open RESETLOGS;

#生成thread 2 redo日志文件

SQL> ALTER DATABASE ADD LOGFILE THREAD 2 GROUP 3 '/oracle/app/oracle/oradata/spdb/redo03.log' SIZE 50M,GROUP 4 '/oracle/app/oracle/oradata/spdb/redo04.log' SIZE 50M;

SQL> alter database open RESETLOGS;

SQL> alter database open;

SQL> alter pluggable database all open;

至此RAC的RMAN異機恢復就完成了。恢復過程中遇到問題就針對解決吧，Good Luck！！!

 

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注常用命令：

RMAN> list backup；

RMAN> crosscheck backupset;

RMAN> delete backupset;

RMAN> delete backup;

RMAN> restore database;

RMAN> restore datafile 31; 

RMAN> recover database until SCN XXX;

RMAN> list archivelog all;

RMAN> list copy;

RMAN> catalog start with '/orabak/backup';