Oracle12c RAC RMAN异机恢复

Posted sonnyBag

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了Oracle12c RAC RMAN异机恢复相关的知识，希望对你有一定的参考价值。

########################################################

#编辑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

#创建目录

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

mkdir -p /orabak/archivelog

 

########################################################

#创建spfile

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

#进到nomount状态

SQL> startup nomount

--#恢复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

 

########################################################

#恢复control文件

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

#进到mount状态

SQL> alter database mount;

#删除backup

RMAN> list backup;

RMAN> crosscheck backup;

RMAN> delete backup;

RMAN> list backup;

 

########################################################

#恢复dbfile全备文件

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报错，需要指定SCN

RMAN> recover database until scn 233086903;　　　　　　#全量备份的SCN

#将归档日志及增量备份数据文件拷贝至/orabak/backup/目录并追加

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

RMAN> list backup;

#找到对应增量备份节点的SCN进行恢复，建议根据备份策略依次恢复（优先读取增量文件其次归档日志）。

RMAN> recover database until scn 234809384;　　　　　　#归档日志恢复第一天增量

 

RMAN> recover database until scn 237672420;　　　　#增量文件及归档日志恢复第二天增量

 

#第二天增量恢复完成，接着恢复第三天增量报错。备份期间生成过数据文件，可通过恢复单独数据文件恢复，因隔天忘记恢复第三天增量数据。

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

RMAN> restore datafile 31; 

 

########################################################

#数据库open

SQL> alter database open;

SQL> alter database open resetlogs;

#ASM磁盘和集群报错，需要调整控制文件

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;

#编辑控制文件，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异机恢复就完成了。恢复过程中遇到问题就针对解决吧，Good Luck！！!

 

########################################################

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\';

以上是关于Oracle12c RAC RMAN异机恢复的主要内容，如果未能解决你的问题，请参考以下文章

RAC/single 异机完全恢复(RMAN)

rman恢复方案和oracle异机恢复

Oracle RMAN 异机恢复一例

Oracle之使用rman进行异机恢复测试记录

Oracle 11G RMAN 单实例异机恢复

100天精通Oracle-实战系列（第15天）使用 RMAN 备份异机恢复 Oracle 数据库