Oracle从文件系统迁移到ASM存储

时间 2019-11-24

标签 oracle 文件系统迁移 asm 存储栏目 Oracle 繁體版

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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ASMhtml

数据库存储迁移到ASM磁盘组数据库

Reference服务器

数据库存储迁移到ASM磁盘组

实验环境前期准备:oracle

文件系统数据库模拟环境《Oracle 11g静默安装简明版》
ASM实例和磁盘组模拟环境《单机静默安装GI软件并建立ASM实例和ASM磁盘组》

迁移前原数据库各文件存储信息查询以下：app

--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

--查询结果以下
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用户须要有读写ASM磁盘的权限rest

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;

1.8 迁移重作日志文件

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#;

1.9 服务器参数文件，并重启数据库

-- 在ASM磁盘组中建立服务器参数文件
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 $ORACLE_HOME/dbs/spfilejingyu.ora
-- 创建$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

1.10 验证各文件存储位置

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

结果以下：日志

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所有迁移到ASM。
code

Reference

Steps To Migrate/Move a Database From Non-ASM to ASM And Vice-Versa (文档 ID 252219.1)