Oracle从文件系统迁移到ASM存储

环境：RHEL 6.4 + Oracle 11.2.0.4

需求：数据库存储由文件系统迁移到ASM

数据库存储迁移到ASM磁盘组

• 1.1 编辑参数文件指定新的控制文件路径
• 1.2 启动数据库到nomount模式
• 1.3 RMAN恢复控制文件
• 1.4 启动数据库到mount模式
• 1.5 RMAN Copy 数据文件
• 1.6 RMAN Switch 数据文件
• 1.7 RMAN Switch 临时文件，并打开数据库
• 1.8 迁移重做日志文件
• 1.9 服务器参数文件，并重启数据库
• 1.10 验证各文件存储位置

Reference

数据库存储迁移到ASM磁盘组

实验环境前期准备:
- 文件系统数据库模拟环境《[Oracle 11g静默安装简明版](http://www.cnblogs.com/jyzhao/p/5001782.html)》
- ASM实例和磁盘组模拟环境《[单机静默安装GI软件并创建ASM实例和ASM磁盘组](http://www.cnblogs.com/jyzhao/p/5012949.html)》

迁移前原数据库各文件存储信息查询如下：

--控制文件
select name from v$controlfile;
--数据文件
select name from v$datafile;
--临时文件
select name from v$tempfile;
--日志文件
select member from v$logfile;
--参数文件
show parameter pfile

--查询结果如下
SQL> select name from v$controlfile;

NAME
--------------------------------------------------------------------------------
/u02/oradata/jingyu/control01.ctl
/u02/app/oracle/fast_recovery_area/jingyu/control02.ctl

SQL> select name from v$datafile;

NAME
--------------------------------------------------------------------------------
/u02/oradata/jingyu/system01.dbf
/u02/oradata/jingyu/sysaux01.dbf
/u02/oradata/jingyu/undotbs01.dbf
/u02/oradata/jingyu/users01.dbf

SQL> select name from v$tempfile;

NAME
--------------------------------------------------------------------------------
/u02/oradata/jingyu/temp01.dbf

SQL> select member from v$logfile;

MEMBER
--------------------------------------------------------------------------------
/u02/oradata/jingyu/redo03.log
/u02/oradata/jingyu/redo02.log
/u02/oradata/jingyu/redo01.log

SQL> show parameter pfile

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      /u02/app/oracle/product/11.2.0
                                                 /dbhome_1/dbs/spfilejingyu.ora

1.1 编辑参数文件指定新的控制文件路径

```
SQL> create pfile='/tmp/pfile.ora' from spfile;
SQL> shutdown immediate
-- 修改controlfile参数值
$ vi /tmp/pfile.ora
controlfile='+DATA1/control01.ctl'
```

1.2 启动数据库到nomount模式

```
SQL> startup nomount pfile='/tmp/pfile.ora'
```

1.3 RMAN恢复控制文件

注意Oracle用户需要有读写ASM磁盘的权限

RMAN> restore controlfile from '/u02/oradata/jingyu/control01.ctl';

1.4 启动数据库到mount模式

```
RMAN> alter database mount;
```

1.5 RMAN Copy 数据文件

```
RMAN> backup as copy database format '+DATA1';
```

1.6 RMAN Switch 数据文件

```
RMAN> switch database to copy;
```

1.7 RMAN Switch 临时文件，并打开数据库

```
RMAN> run {
set newname for tempfile 1 to '+DATA1';
switch tempfile all;
}

RMAN> ALTER DATABASE OPEN;

<h2 id="1.8">1.8 迁移重做日志文件</h2>

set linesize 200

col member for a60

SQL> SELECT a.group#, b.member, a.status FROM v$log a, v$logfile b WHERE a.group#=b.group#;

SQL> ALTER DATABASE ADD LOGFILE MEMBER '+DATA1' TO GROUP 1;

SQL> ALTER DATABASE ADD LOGFILE MEMBER '+DATA1' TO GROUP 2;

SQL> ALTER DATABASE ADD LOGFILE MEMBER '+DATA1' TO GROUP 3;

SQL> ALTER SYSTEM SWITCH LOGFILE;

SQL> ALTER DATABASE DROP LOGFILE MEMBER '/u02/oradata/jingyu/redo01.log';

SQL> ALTER SYSTEM SWITCH LOGFILE;

SQL> ALTER DATABASE DROP LOGFILE MEMBER '/u02/oradata/jingyu/redo02.log';

SQL> ALTER SYSTEM SWITCH LOGFILE;

SQL> ALTER DATABASE DROP LOGFILE MEMBER '/u02/oradata/jingyu/redo03.log';

SQL> ALTER SYSTEM CHECKPOINT;

SQL> SELECT a.group#, b.member, a.status FROM v$log a, v$logfile b WHERE a.group#=b.group#;

<h2 id="1.9">1.9 服务器参数文件，并重启数据库</h2>

-- 在ASM磁盘组中创建服务器参数文件

SQL> create spfile='+DATA1' from pfile='/tmp/pfile.ora';

-- 正常关闭数据库

SQL> shutdown immediate

-- 删除$ORACLE_HOME/dbs/spfilejingyu.ora

$ rm $ORACLE_HOME/dbs/spfilejingyu.ora

-- 建立$ORACLE_HOME/dbs/initjingyu.ora，编辑内容指定ASM磁盘组中的服务器参数文件。

$ vi initjingyu.ora

spfile='+DATA1/JINGYU/PARAMETERFILE/spfile.266.897474951'

--启动数据库（会自动找到参数文件进而转到ASM磁盘组中的服务器参数文件）

SQL> startup

<h2 id="1.10">1.10 验证各文件存储位置</h2>

select name from v$datafile union all

select name from v$tempfile union all

select member from v$logfile union all

select name from v$controlfile;

show parameter pfile

结果如下：

SQL> select name from v$datafile union all

2 select name from v$tempfile union all

3 select member from v$logfile union all

4 select name from v$controlfile;

NAME

+DATA1/jingyu/datafile/system.257.897474123

+DATA1/jingyu/datafile/sysaux.258.897474149

+DATA1/jingyu/datafile/undotbs1.259.897474165

+DATA1/jingyu/datafile/users.261.897474169

+DATA1/jingyu/tempfile/temp.262.897474267

+DATA1/jingyu/onlinelog/group_1.263.897474349

+DATA1/jingyu/onlinelog/group_2.264.897474359

+DATA1/jingyu/onlinelog/group_3.265.897474363

+DATA1/control01.ctl

9 rows selected.

Elapsed: 00:00:00.02

SQL> show parameter pfile

NAME TYPE VALUE

---

spfile string +DATA1/jingyu/parameterfile/sp

file.266.897474951

至此，数据库存储已经成功由文件系统全部迁移到ASM。
<h1 id="2">Reference</h1>
- Steps To Migrate/Move a Database From Non-ASM to ASM And Vice-Versa (文档 ID 252219.1)