Source db端:
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1
ORACLE_SID=ygdg
数据文件位置:/u01/app/oracle/oradata/ygdg
Target db端:
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1
ORACLE_SID=ygdg
数据文件位置:/u01/app/oracle/oradata/ygdg
【1.原库rman备份】
[oracle@oraclelinux rman]$ cat rman_for_dg.sh
export ORACLE_SID=ygdg
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1
export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK
rman target=/ log='/u01/ygtest/fullbackup.log'
crosscheck archivelog all;
run
{
allocate channel t1 type disk;
allocate channel t2 type disk;
allocate channel t3 type disk;
allocate channel t4 type disk;
backup as compressed backupset database format '/u01/ygtest/DB_%d_%s_%p_%t.bak' TAG='WHOLE BACKUP' section size 30G
plus archivelog format '/u01/ygtest/ARC_%d_%s_%p_%t.bak' TAG='ARC BACKUP' delete input;
backup current controlfile format '/u01/ygtest/CTL_%d_%s_%p_%t.bak' TAG='CTL BACKUP';
release channel t1;
release channel t2;
release channel t3;
release channel t4;
}
crosscheck backup;
delete noprompt obsolete recovery window of 3 days;
EOF
【2.原库查看DBID】
export ORACLE_SID=ygdg
rman target=/
连接上之后就可以看得到DBID,记下来
【3.原库生成pfile】
create pfile='/u01/pfileygdg.ora' from spfile;
【4.备份文件传至目标库】
scp /u01/ygtest/*.bak oracle@10.1.1.11:/u01/ygtest 记得确定目录权限和所属者
【5.原库目标库结合修改pfile,并将修改后的参数文件传到目标端】
建议将原库生成的pfile和目标库的spfile都下载到本地,根据“参数位置看pfile,其他看spfile”的原则进行修改
【6.目标数据库创建spfile,并使用spfile启动数据库到nomount状态】
如果上面参数修改没问题,正常应该是下面这样:
SQL> startup pfile='/software/pfileygdg.ora';
SQL> create spfile from pfile='/software/pfileygdg.ora';
SQL> shutdown immediate;
SQL> startup nomount;
但是有些参数没注意修改,就会出现ORA-,不用担心,看到什么错改什么就行,如下:
SQL> startup pfile='/software/pfileygdg.ora';
ORACLE 例程已经启动。
Total System Global Area 221331456 bytes
Fixed Size2251856 bytes
Redo Buffers5169152 bytes
ORA-00201: control file version 11.2.0.4.0 incompatible with ORACLE version 11.2.0.0.0
ORA-00202: control file: '/u01/app/oracle/oradata/ygdg/control01.ctl'
分析:查看参数文件中compatible值为11.2.0.0.0,与控制文件中的值冲突;
解决:
SQL> create spfile from pfile='/software/pfileygdg.ora';
文件已创建。
SQL> shutdown immediate;
ORA-01507: ??????
ORACLE 例程已经关闭。
解决:修改spfile文件compatible参数后,使用spfile启动
SQL> startup nomount;
ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/u01/app/oracle/product/11.2.0/db_1/dbs/initygdg.ora'
解决此问题的方法就是到cd /u01/app/oracle/admin/ygdg/pfile/目录下,将init.ora.25201817331
复制到dbs目录下:
cp init.ora.25201817331 /u01/app/oracle/product/11.2.0/db_1/dbs/initygdg.ora
SQL> startup nomount;
ORACLE 例程已经启动。
Total System Global Area 830930944 bytes
Fixed Size2257800 bytes
Redo Buffers6586368 bytes
从 Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options 断开
【7.还原控制文件】
[oracle@localhost database]$ rman target=/
恢复管理器: Release 11.2.0.4.0 - Production on 星期一 3月 5 19:20:26 2018
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
已连接到目标数据库: YGDG (未装载)
RMAN> restore controlfile from '/software/ygtest/CTL_YGDG_55_1_969977274.bak';
RMAN> alter database mount;
【8.指定备份文件所在目录】
RMAN> catalog start with '/software/ygtest';
【9.还原与恢复数据库】
RMAN> run{
set newname for datafile 1 to "/u01/app/oracle/oradata/ygdg/system01.dbf";
set newname for datafile 2 to "/u01/app/oracle/oradata/ygdg/sysaux01.dbf";
set newname for datafile 3 to "/u01/app/oracle/oradata/ygdg/undotbs01.dbf";
set newname for datafile 4 to "/u01/app/oracle/oradata/ygdg/users01.dbf";
set newname for datafile 5 to "/u01/app/oracle/oradata/ygdg/test01.dbf";
set newname for tempfile 1 to "/u01/app/oracle/oradata/ygdg/temp01.dbf";
SQL "ALTER DATABASE RENAME FILE ''/u01/app/oracle/oradata/ygdg/redo01a.log'' to ''/u01/app/oracle/oradata/ygdg/redo01a.log'' ";
SQL "ALTER DATABASE RENAME FILE ''/u01/app/oracle/oradata/ygdg/redo02a.log'' to ''/u01/app/oracle/oradata/ygdg/redo02a.log'' ";
}
RMAN> run{
restore database;
SWITCH DATAFILE ALL;
recover database;
} # update control file with new filenames
注:1.原库执行
SQL> select 'set newname for datafile ' || a.FILE# || ' to "' || a.NAME || '";'
from v$datafile a union all select 'set newname for tempfile ' || a.FILE# || ' to "' || a.NAME || '";' from v$tempfile a;
'SETNEWNAMEFORDATAFILE'||A.FILE#||'TO"'||A.NAME||'";'
-----------------------------------------------------------------------------
set newname for datafile 1 to "/u01/app/oracle/oradata/ygdg/system01.dbf";
set newname for datafile 2 to "/u01/app/oracle/oradata/ygdg/sysaux01.dbf";
set newname for datafile 3 to "/u01/app/oracle/oradata/ygdg/undotbs01.dbf";
set newname for datafile 4 to "/u01/app/oracle/oradata/ygdg/users01.dbf";
set newname for datafile 5 to "/u01/app/oracle/oradata/ygdg/test01.dbf";
set newname for tempfile 1 to "/u01/app/oracle/oradata/ygdg/temp01.dbf";
已选择6行。
SELECT 'SQL "ALTER DATABASE RENAME FILE ''''' || a.MEMBER ||''''' to ''''' || a.MEMBER || ''''' ";' FROM v$logfile a;
----------------------------------------------------------------------------
SQL "ALTER DATABASE RENAME FILE ''/u01/app/oracle/oradata/ygdg/redo01a.log'' to
''/u01/app/oracle/oradata/ygdg/redo01a.log'' ";
SQL "ALTER DATABASE RENAME FILE ''/u01/app/oracle/oradata/ygdg/redo02a.log'' to
''/u01/app/oracle/oradata/ygdg/redo02a.log'' ";
2.使用newnam for datafile来实现修改不同的文件路径
3.switch datafile all用来更新还原回来的controlfile中的数据文件路径与联机日志文件路径,要不然recover时会报错RMAN-06094
[oracle@localhost database]$ sqlplus / as sysdba
SQL> select status from v$instance;
STATUS
------------
MOUNTED
SQL> alter database open resetlogs;
数据库已更改。
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