ORACLE 11g将数据库移动到不同的ASM磁盘组/修改ASM磁盘组的冗余属性

ORACLE 11g将数据库移动到不同的ASM磁盘组
（修改ASM磁盘组的冗余属性）

ORACLE使用ASM存储，建库时磁盘组的冗余属性使用了EXTERN，现在想将磁盘组改为NORMAL，以下是具体步骤：
1. 新建一个期望属性的新磁盘组
[root@Oracle-LAB~]# su - grid
[grid@Oracle-LAB ~]$ asmca
或者用命令：
[grid@Oracle-LAB~]$ sqlplus / as sysasm
SQL > CREATE[b] DISKGROUP DATA NORMAL REDUNDANCY DISK '/dev/raw/raw1'SIZE 5120 M DISK '/dev/raw/raw2'SIZE 5120 M
DISK '/dev/raw/raw3' SIZE 5120 M;[/b]
2. 检查磁盘组
[grid@Oracle-LAB~]$ sqlplus / as sysasm
SQL>
select state,name,type from v$asm_diskgroup;
STATE NAME TYPE
----------- ------------------------------ ------
MOUNTED DATA EXTERN
MOUNTED FRA EXTERN
MOUNTED DATA01 NORMAL
3. 备份现有的数据库
[oracle@Oracle-LAB ~]$ sqlplus /nolog
SQL>
conn /as sysdba
SQL>
show parameter db_name
NAME TYPE VALUE
--------------------------- ---------------
db_name string ORCL
查看当前控制文件的Value：
SQL> show parameter control
NAME TYPE VALUE
----------------------------------------------- ------------------------------
control_file_record_keep_time integer 7
control_files string +DATA/orcl/controlfile/current
.260.833734379
control_management_pack_access string DIAGNOSTIC+TUNING
在新磁盘组生成新控制文件有两种方法（推荐方法二）：
方法一：通过备份现有控制文件来生成：
备份控制文件到新磁盘组
SQL>
alter database backup controlfile to '+DATA01';
Database altered.
查看备份后的控制文件：
[root@Oracle-LABsoftware]#
su - grid
[grid@Oracle-LAB ~]$ asmcmd
ASMCMD> ls +DATA01/ORCL/CONTROLFILE/
Backup.256.833381229
设定初始化参数：
SQL> alter system setcontrol_files='+DATA01/ORCL/CONTROLFILE/Backup.256.833381229' scope=spfile;
System altered.
关闭数据库并启动至nomount状态（用SQL或RAMAN）
[oracle@Oracle-LAB ~]$
rman target /
RMAN> shutdown immediate #如果是RAC，需要到另外的节点执行SHUTDOWN命令
using targetdatabase control file instead of recovery catalog
database closed
databasedismounted
Oracle instance shut down
RMAN> startup nomount
connected totarget database (not started)
Oracle instancestarted
Total SystemGlobal Area 1653518336 bytes
Fixed Size 2228904 bytes
VariableSize 973081944 bytes
DatabaseBuffers 671088640 bytes
Redo Buffers 7118848 bytes
从原控制文件生成现有控制文件：
RMAN>
restore controlfile from'+DATA/orcl/controlfile/current.259.833372337';
Starting restoreat 05-DEC-13
allocatedchannel: ORA_DISK_1
channelORA_DISK_1: SID=13 device type=DISK
channelORA_DISK_1: copied control file copy
output file name=+DATA01/orcl/controlfile/backup.256.833381229
Finished restore at 05-DEC-13
方法二：使用添加控制文件的方法：
SQL> alter system set control_files='+DATA/orcl/controlfile/current.260.833734379','+DATA01'scope=spfile;
System altered.
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instanceshut down.
SQL> startup nomount
ORACLE instance started.
Total System Global Area 1653518336 bytes
Fixed Size 2228904 bytes
Variable Size 973081944 bytes
Database Buffers 671088640 bytes
Redo Buffers 7118848 bytes
SQL>
quit
[oracle@Oracle-LAB~]$
rman target/
RMAN> restore controlfile from '+DATA/orcl/controlfile/current.260.833734379';
Starting restore at 09-DEC-13
using target database control file instead of recoverycatalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=135 device type=DISK
channel ORA_DISK_1: copied control file copy
output file name=+DATA/orcl/controlfile/current.260.833734379
output filename=+DATA01/orcl/controlfile/current.256.833744103
Finished restore at 09-DEC-13
RMAN> quit
Recovery Manager complete.
[oracle@Oracle-LAB~]$ sqlplus /nolog
SQL> conn /as sysdba
Connected.
SQL> alter database mount;
Database altered.
SQL> alter database open;
Database altered.
SQL> show parameter control;
NAME TYPE VALUE
------------------------------------ -----------------------------------------
control_file_record_keep_time integer 7
control_files string +DATA/orcl/controlfile/current
.260.833734379,+DATA01/orcl/c
ontrolfile/current.256.833744103
control_management_pack_access string DIAGNOSTIC+TUNING
SQL> alter system setcontrol_files='+DATA01/orcl/controlfile/current.256.833744103' scope=spfile;
System altered.
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area 1653518336 bytes
Fixed Size 2228904 bytes
Variable Size 973081944 bytes
Database Buffers 671088640 bytes
Redo Buffers 7118848 bytes
Database mounted.
Database opened.
SQL> show parameter control;
NAME TYPE VALUE
------------------------------------ -----------------------------------------
control_file_record_keep_time integer 7
control_files string +DATA01/orcl/controlfile/curre
nt.256.833744103
control_management_pack_access string DIAGNOSTIC+TUNING

将数据库启动到mount状态：
RMAN> shutdown immediate

RMAN> startup nomount
RMAN> alter database mount ;
database mounted
released channel: ORA_DISK_1
启用RAMN工具，将数据库镜像备份到新磁盘组：
RMAN>backup as copy database format '+DATA01';
Starting backupat 05-DEC-13
allocatedchannel: ORA_DISK_1
channelORA_DISK_1: SID=13 device type=DISK
channelORA_DISK_1: starting datafile copy
input datafilefile number=00001 name=+DATA/orcl/datafile/system.264.833372265
output filename=+DATA01/orcl/datafile/system.257.833384045 tag=TAG20131205T153405 RECID=3STAMP=833384056
channelORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
channelORA_DISK_1: starting datafile copy
input datafilefile number=00002 name=+DATA/orcl/datafile/sysaux.263.833372265
output filename=+DATA01/orcl/datafile/sysaux.258.833384061 tag=TAG20131205T153405 RECID=4STAMP=833384069
channelORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
channelORA_DISK_1: starting datafile copy
input datafilefile number=00005 name=+DATA/orcl/datafile/example.268.833372347
output filename=+DATA01/orcl/datafile/example.259.833384075 tag=TAG20131205T153405 RECID=5STAMP=833384080
channelORA_DISK_1: datafile copy complete, elapsed time: 00:00:08
channelORA_DISK_1: starting datafile copy
input datafilefile number=00003 name=+DATA/orcl/datafile/undotbs1.267.833372265
output filename=+DATA01/orcl/datafile/undotbs1.260.833384083 tag=TAG20131205T153405RECID=6 STAMP=833384084
channelORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channelORA_DISK_1: starting datafile copy
copying currentcontrol file
output filename=+DATA01/orcl/controlfile/backup.261.833384087 tag=TAG20131205T153405RECID=7 STAMP=833384086
channel ORA_DISK_1:datafile copy complete, elapsed time: 00:00:01
channelORA_DISK_1: starting datafile copy
input datafilefile number=00004 name=+DATA/orcl/datafile/users.269.833372265
output filename=+DATA01/orcl/datafile/users.262.833384087 tag=TAG20131205T153405 RECID=8STAMP=833384087
channelORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
channelORA_DISK_1: starting full datafile backup set
channelORA_DISK_1: specifying datafile(s) in backup set
including currentSPFILE in backup set
channel ORA_DISK_1:starting piece 1 at 05-DEC-13
channelORA_DISK_1: finished piece 1 at 05-DEC-13
piecehandle=+DATA01/orcl/backupset/2013_12_05/nnsnf0_tag20131205t153405_0.263.833384089tag=TAG20131205T153405 comment=NONE
channelORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 05-DEC-13
检查备份的数据库镜像
RMAN> list copy of database;

4. 切换到备份的数据库
RMAN> switch database to copy;
datafile 1switched to datafile copy"+DATA01/orcl/datafile/system.257.833384045"
datafile 2switched to datafile copy"+DATA01/orcl/datafile/sysaux.258.833384061"
datafile 3switched to datafile copy"+DATA01/orcl/datafile/undotbs1.260.833384083"
datafile 4switched to datafile copy "+DATA01/orcl/datafile/users.262.833384087"
datafile 5switched to datafile copy"+DATA01/orcl/datafile/example.259.833384075"

RMAN> alter database open;
database opened
修改数据库新建文件的目标磁盘组
[oracle@Oracle-LAB ~]$ sqlplus "/assysdba"
SQL> alter system set db_create_file_dest='+DATA01';
System altered.

5. 在新数据库内建立新的TEMP表空间（TEMP表空间不会从旧的磁盘组中移到新磁盘组）
SQL> select name from v$tempfile; #查看现有的temp文件名
SQL> create bigfile temporary tablespace temp01 tempfile size 2M;
Tablespacecreated.
SQL> alter database default temporary tablespace temp01;
Database altered.
SQL> drop tablespace temp;
Tablespace dropped.

6. 修改重做日志组
SQL> select * from v$log; #查看有几个组
或：SQL>select group#,status from v$log;
GROUP# STATUS
--------------------------
1 CURRENT
2 INACTIVE
3 INACTIVE
SQL> alter database add logfile member '+data01' to group 1;
Database altered.
SQL> alter database add logfile member '+data01' to group 2;
Database altered.
SQL> alter database add logfile member '+data01' to group 3;
Database altered.
SQL>
select member from v$logfile; #查找logfile文件：
MEMBER
--------------------------------------------------------------------------------
+DATA/orcl/onlinelog/group_3.256.833372341
+DATA/orcl/onlinelog/group_2.257.833372341
+DATA/orcl/onlinelog/group_1.258.833372341
+DATA01/orcl/onlinelog/group_1.265.833386551
+DATA01/orcl/onlinelog/group_2.266.833386565
+DATA01/orcl/onlinelog/group_3.267.833386569
6 rows selected.
SQL>
alter system switch logfile; #多用几次切换命令，切换一个循环
SQL>
select group#,status from v$log; #查看结果，找到INACTIVE的组。
GROUP# STATUS
--------------------------
1 INACTIVE
2 INACTIVE
3 CURRENT
SQL> alter database drop logfile member'+DATA/orcl/onlinelog/group_1.258.833372341';
Database altered.
SQL> alter database drop logfile member'+DATA/orcl/onlinelog/group_2.257.833372341';
Database altered.
SQL>
select group#,status from v$log;
再次切换，释放Group_3，然后删除：
SQL>
alter system switch logfile;
SQL> alter database drop logfile member'+DATA/orcl/onlinelog/group_3.256.833372341';
Database altered.
SQL> select * from v$logfile; #检查结果

7. 迁移参数配置
迁移数据库配置：
[oracle@Oracle-LAB ~]$ sqlplus /nolog
SQL> conn /assysdba
Connected.
SQL> create pfile='$ORACLE_HOME/dbs/init_ORCL.ora' from spfile;
File created.
SQL> shutdown immediate;
Database closed.
Databasedismounted.
ORACLE instanceshut down.
SQL> startup pfile='$ORACLE_HOME/dbs/init_ORCL.ora';
ORACLE instancestarted.
Total SystemGlobal Area 1653518336 bytes
Fixed Size 2228904 bytes
Variable Size 989859160 bytes
Database Buffers 654311424 bytes
Redo Buffers 7118848 bytes
Database mounted.
Database opened.
SQL> create spfile='+DATA01/orcl/spfileORCL.ora' frompfile='$ORACLE_HOME/dbs/init_ORCL.ora';
File created.
SQL> shutdown immediate;
Database closed.
Databasedismounted.
ORACLE instanceshut down.
[oracle@Oracle-LABdbs]$vi initORCL.ora
将SPFILE='+DATA/ORCL/spfileORCL.ora'改为SPFILE='+DATA01/ORCL/spfileORCL.ora'，并保存退出。
SQL> startup
迁移ASM配置：
[grid@Oracle-LAB ~]$ sqlplus / assysasm
SQL>
create pfile='$ORACLE_HOME/dbs/init_ORCL.ora' from spfile;
File created.
SQL> shutdown immediate;
SQL>
startup pfile='$ORACLE_HOME/dbs/init_ORCL.ora';
ASM instancestarted
Total SystemGlobal Area 283930624 bytes
Fixed Size 2227664 bytes
Variable Size 256537136 bytes
ASM Cache 25165824 bytes
ASM diskgroupsmounted
SQL>
create spfile='+DATA01' from pfile='$ORACLE_HOME/dbs/init_ORCL.ora';
`File created.
SQL> shutdown immediate;
SQL> startup

8. 全面检查

SQL> show parameter pfile;（分别在GRID和ORACLE帐号下查看）
SQL> select name from v$controlfile
SQL> select name from v$datafile
SQL> select name from v$tempfile
SQL> select member from v$logfile
SQL> select filename from v$block_change_tracking
SQL> select name from v$flashback_database_logfile;