一、环境介绍
操作系统：Red Hat Enterprise Linux Server release 6.4 (Santiago)
数据库：Oracle 11.2.0.4.0 - 64bit Production（grid和oracle软件版本一致）
RAC实例名称：RACDB
现有磁盘组：
备注：原有磁盘组（OCR、DATA、FRA）都是Normal方式
添加磁盘组DGOCR、DGDATA、DGFRA以External方式（ASMLIB方式）
Disk /dev/sdc: 69.8 GB, 69793218560 bytes
255 heads, 63 sectors/track, 8485 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xffdbacb6
?? Device Boot????? Start???????? End????? Blocks?? Id? System
/dev/sdc1?????????????? 1??????? 2612??? 20980858+? 83? Linux
/dev/sdc2??????????? 2613??????? 5224??? 20980890?? 83? Linux
/dev/sdc3??????????? 5225??????? 7836??? 20980890?? 83? Linux
创建ASMLIB磁盘
[root@host03 oracle]# cat initdisk8.sh
## Delete asmdisk on host03
/etc/init.d/oracleasm deletedisk asmdisk8p1
/etc/init.d/oracleasm deletedisk asmdisk8p2
/etc/init.d/oracleasm deletedisk asmdisk8p3
## Create disk asmdisk on host03
/etc/init.d/oracleasm createdisk asmdisk8p1 /dev/sdc1
/etc/init.d/oracleasm createdisk asmdisk8p2 /dev/sdc2
/etc/init.d/oracleasm createdisk asmdisk8p3 /dev/sdc3
## Scan disk asmdisk on host03
/etc/init.d/oracleasm scandisks
/etc/init.d/oracleasm listdisks
## Scan disk asmdisk on host04
ssh host04 /etc/init.d/oracleasm scandisks
ssh host04 /etc/init.d/oracleasm listdisks
查看磁盘（host03、host04）
[root@host03 oracle]# ll /dev/oracleasm/disks/
total 0
brw-rw---- 1 grid asmadmin 8, 49 Sep? 6 20:04 ASMDISK1P1
brw-rw---- 1 grid asmadmin 8, 50 Sep? 6 20:04 ASMDISK1P2
brw-rw---- 1 grid asmadmin 8, 51 Sep? 6 20:04 ASMDISK1P3
brw-rw---- 1 grid asmadmin 8, 53 Sep? 6 20:04 ASMDISK1P4
brw-rw---- 1 grid asmadmin 8, 54 Sep? 6 20:04 ASMDISK1P5
brw-rw---- 1 grid asmadmin 8, 55 Sep? 6 20:04 ASMDISK1P6
brw-rw---- 1 grid asmadmin 8, 56 Sep? 6 20:04 ASMDISK1P7
brw-rw---- 1 grid asmadmin 8, 57 Sep? 6 20:04 ASMDISK1P8
brw-rw---- 1 grid asmadmin 8, 58 Sep? 6 20:04 ASMDISK2P1
brw-rw---- 1 grid asmadmin 8, 59 Sep? 6 20:04 ASMDISK2P2
brw-rw---- 1 grid asmadmin 8, 33 Sep? 6 20:03 ASMDISK8P1
brw-rw---- 1 grid asmadmin 8, 34 Sep? 6 20:03 ASMDISK8P2
brw-rw---- 1 grid asmadmin 8, 35 Sep? 6 20:03 ASMDISK8P3
挂载磁盘
二、目标换磁盘组将原来Normal 变成External方式
1、备份现有库
run{
allocate channel c1 device type disk;
allocate channel c2 device type disk;
allocate channel c3 device type disk;
sql 'alter system switch logfile';
backup as compressed backupset format '/home/oracle/backup/full_%U_%d.bak' database plus archivelog format '/home/oracle/backup/archive_%U_%d';
backup current controlfile format '/home/oracle/backup/controlfile_%U_%d.bak';
backup spfile? format '/home/oracle/backup/spfile_%U_%d.bak';
release channel c1;
release channel c2;
release channel c3;
}
2、备份OCR、VOTING、ASM spfile文件
镜像OCR配置：
[root@host03 bin]# ./ocrcheck
Status of Oracle Cluster Registry is as follows :
???????? Version????????????????? :????????? 3
???????? Total space (kbytes)???? :???? 262120
???????? Used space (kbytes)????? :?????? 3268
???????? Available space (kbytes) :???? 258852
???????? ID?????????????????????? : 1185425206
???????? Device/File Name???????? :?????? +OCR
??????????????????????????????????? Device/File integrity check succeeded
???????? Device/File Name???????? :?????? +FRA
??????????????????????????????????? Device/File integrity check succeeded
??????????????????????????????????? Device/File not configured
??????????????????????????????????? Device/File not configured
??????????????????????????????????? Device/File not configured
???????? Cluster registry integrity check succeeded
???????? Logical corruption check succeeded
添加镜像OCR
[root@host03 bin]# ./ocrconfig -add +DGOCR
[root@host03 bin]# ./ocrcheck
Status of Oracle Cluster Registry is as follows :
???????? Version????????????????? :????????? 3
???????? Total space (kbytes)???? :???? 262120
???????? Used space (kbytes)????? :?????? 3268
???????? Available space (kbytes) :???? 258852
???????? ID???????????????? ??????: 1185425206
???????? Device/File Name???????? :?????? +OCR
??????????????????????????????????? Device/File integrity check succeeded
???????? Device/File Name???????? :?????? +FRA
??????????????????????????????????? Device/File integrity check succeeded
???????? Device/File Name???????? :???? +DGOCR
??????????????????????????????????? Device/File integrity check succeeded
??????????????????????????????????? Device/File not configured
??????????????????????????????????? Device/File not configured
???????? Cluster registry integrity check succeeded
???????? Logical corruption check succeeded
删除ocr信息在+FRA、+OCR
[root@host03 bin]# ./ocrconfig -delete? +OCR
[root@host03 bin]# ./ocrconfig -delete? +FRA
查看OCR信息
[root@host03 bin]# ./ocrconfig -add +DGFRA
[root@host03 bin]# ./ocrcheck
Status of Oracle Cluster Registry is as follows :
???????? Version????????????????? :????????? 3
???????? Total space (kbytes)???? :???? 262120
???????? Used space (kbytes)????? :?????? 3268
???????? Available space (kbytes) :???? 258852
???????? ID?????????????????????? : 1185425206
???????? Device/File Name???????? :???? +DGOCR
??????????????????????????????????? Device/File integrity check succeeded
???????? Device/File Name???????? :???? +DGFRA
??????????????????????????????????? Device/File integrity check succeeded
??????????????????????????????????? Device/File not configured
??????????????????????????????????? Device/File not configured
??????????????????????????????????? Device/File not configured
???????? Cluster registry integrity check succeeded
???????? Logical corruption check succeeded
迁移VOTDISK表决磁盘到OCRDG（External磁盘）
[root@host03 bin]# ./crsctl query css votedisk
##? STATE??? File Universal Id??????????????? File Name Disk group
--? -----??? -----------------??????????????? --------- ---------
?1. ONLINE? 5dbabc26412a4f97bf56cbdc5abfc329 (/dev/oracleasm/disks/ASMDISK1P1) [OCR]
?2. ONLINE?? 76ce14408c434fbdbf73af3aa3cf43f7 (/dev/oracleasm/disks/ASMDISK1P2) [OCR]
?3. ONLINE?? 19c3b8e4afc64f58bf382cff08775ed8 (/dev/oracleasm/disks/ASMDISK1P3) [OCR]
Located 3 voting disk(s).
[root@host03 bin]# ./crsctl replace votedisk +DGOCR
Successful addition of voting disk 68994379e59b4f82bf591a4e11db65de.
Successful deletion of voting disk 5dbabc26412a4f97bf56cbdc5abfc329.
Successful deletion of voting disk 76ce14408c434fbdbf73af3aa3cf43f7.
Successful deletion of voting disk 19c3b8e4afc64f58bf382cff08775ed8.
Successfully replaced voting disk group with +DGOCR.
CRS-4266: Voting file(s) successfully replaced
[root@host03 bin]# ./crsctl query css votedisk????
##? STATE??? File Universal Id??????????????? File Name Disk group
--? -----??? -----------------??????????????? --------- ---------
?1. ONLINE?? 68994379e59b4f82bf591a4e11db65de (/dev/oracleasm/disks/ASMDISK8P1) [DGOCR]
Located 1 voting disk(s).
备份asm spfile文件：（迁移spfile? 由旧签到新的磁盘组）
[root@host03 bin]# su - grid
-bash-4.1$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.4.0 Production on Mon Sep 6 20:41:14 2021
Copyright (c) 1982, 2013, Oracle.? All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> show parameter spfile;
NAME????? TYPE ??????VALUE
------------------------------------ ----------- ------------------------
spfile ??string????? +OCR/rac-scan/asmparameterfile/registry.253.1081294865
create pfile='/home/grid/asmpfile.ora' from spfile;
create spfile='+DGOCR' from pfile='/home/grid/asmpfile.ora';
停止集群
[root@host03 bin]# ./crsctl stop crs
[root@host04 bin]# ./crsctl stop crs
查看asm spfile文件位置是否已经修改
SQL> show parameter spfile;
NAME???????????????????????????????? TYPE??????? VALUE
------------------------------------ ----------- ------------------------------
spfile?????????????????????????????? string????? +DGOCR/rac-scan/asmparameterfi
???????????????????????????????????????????????? le/registry.253.1080079355
[root@host03 bin]# ./srvctl? start database -d racdb
[oracle@host03 ~]$ srvctl? status database -d racdb
Instance RACDB1 is running on node host03
Instance RACDB2 is running on node host04
删除OCR磁盘组
[root@host03 bin]# su - grid
-bash-4.1$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.4.0 Production on Mon Sep 6 21:33:59 2021
Copyright (c) 1982, 2013, Oracle.? All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> alter diskgroup ocr dismount;
Diskgroup altered.
[root@host04 bin]# su - grid
-bash-4.1$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.4.0 Production on Mon Sep 6 21:36:07 2021
Copyright (c) 1982, 2013, Oracle.? All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> alter diskgroup ocr dismount;
Diskgroup altered.
[root@host03 bin]# su - grid
-bash-4.1$ sqlplus / as sysasm
SQL> drop diskgroup ocr force including contents;
Diskgroup dropped.
crs删除磁盘组
[oracle@host03 ~]$ srvctl remove diskgroup -g OCR
[oracle@host03 ~]$ crsctl status res -t?????????
--------------------------------------------------------------------------------
NAME?????????? TARGET? STATE??????? SERVER?????????????????? STATE_DETAILS??????
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.DGDATA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????? ???????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.DGFRA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04???????????? ??????????????????????????
ora.DGOCR.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.FRA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.LISTENER.lsnr
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.asm
?????????????? ONLINE? ONLINE?????? host03?????????????????? Started????????????
?????????????? ONLINE? ONLINE?????? host04?????????????????? Started????????????
ora.gsd
?????????????? OFFLINE OFFLINE????? host03??????????????????????????????????????
?????????????? OFFLINE OFFLINE????? host04??????????????????????????????????????
ora.net1.network
?????????????? ONLINE? ONLINE?????? host03?????????????????????????? ????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.ons
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04???????????????????????????? ??????????
ora.registry.acfs
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
????? 1??????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.cvu
????? 1??????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.host03.vip
????? 1??????? ONLINE? ONLINE?????? host03??????????????????????????????????????
ora.host04.vip
????? 1??????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.oc4j
????? 1??????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.racdb.db
????? 1??????? ONLINE? ONLINE?????? host03?????????????????? Open???????????????
????? 2??????? ONLINE? ONLINE?????? host04?????????????????? Open???????????????
ora.scan1.vip
????? 1??????? ONLINE? ONLINE?????? host04
检查启动磁盘组情况
[root@host03 bin]# ./crsctl status res ora.racdb.db -f
START_DEPENDENCIES=hard(ora.OCR.dg,ora.DATA.dg,ora.FRA.dg) weak(type:ora.listener.type,global:type:ora.scan_listener.type,uniform:ora.ons,global:ora.gns) pullup(ora.OCR.dg,ora.DATA.dg,ora.FRA.dg)
修改为：
./srvctl modify database -d racdb -a "DGOCR,DATA,FRA";
重新启动实例，查看磁盘组信息
[root@host03 bin]# ./crsctl status res -t
--------------------------------------------------------------------------------
NAME?????????? TARGET? STATE??????? SERVER?????????????????? STATE_DETAILS??????
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04?????????????????????????????????? ????
ora.DGDATA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.DGFRA.dg
?????????????? ONLINE? ONLINE?????? host03????????????????? ?????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.DGOCR.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.FRA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.LISTENER.lsnr
????????? ?????ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.asm
?????????????? ONLINE? ONLINE?????? host03?????????????????? Started????????????
??????????? ???ONLINE? ONLINE?????? host04?????????????????? Started????????????
ora.gsd
?????????????? OFFLINE OFFLINE????? host03??????????????????????????????????????
?????????????? OFFLINE OFFLINE????? host04??????????????????????????????????????
ora.net1.network
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.ons
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.registry.acfs
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04?????????????????????????????? ????????
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
????? 1??????? ONLINE? ONLINE?????? host03 ??????????????????????????????????????
ora.cvu
????? 1??????? ONLINE? ONLINE?????? host03??????????????????????????????????????
ora.host03.vip
????? 1??????? ONLINE? ONLINE?????? host03??????????????????????????????????????
ora.host04.vip
????? 1??????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.oc4j
????? 1??????? ONLINE? ONLINE?????? host03??????????????????????????????????????
ora.racdb.db
? ????1??????? ONLINE? ONLINE?????? host03?????????????????? Open???????????????
????? 2??????? ONLINE? ONLINE?????? host04?????????????????? Open???????????????
ora.scan1.vip
????? 1??????? ONLINE? ONLINE?????? host03?
3、迁移oracle参数文件、控制文件
修改参数文件位置
SQL> show parameter spfile;
NAME???????????????????????????????? TYPE??????? VALUE
------------------------------------ ----------- ------------------------------
spfile?????????????????????????????? string????? +DATA/racdb/spfileracdb.ora
SQL> create pfile='/home/oracle/pfile1.ora' from spfile;
File created.
SQL>create spfile='+DGDATA/racdb/spfileracdb.ora' from pfile='/home/oracle/pfile1.ora';
File created.
修改initRACDB1.ora? initRACDB2.ora文件
[oracle@host03 dbs]$ vi initRACDB1.ora
SPFILE='+DGDATA/racdb/spfileracdb.ora'
[oracle@host04 dbs]$ vi initRACDB1.ora
SPFILE='+DGDATA/racdb/spfileracdb.ora'
修改OCR中spfile位置
srvctl modify database -d racdb -p '+DGDATA/racdb/spfileracdb.ora'
[oracle@host03 dbs]$ srvctl config database -d racdb
Database unique name: RACDB
Database name: RACDB
Oracle home: /u01/app/oracle/product/11.2.0/dbhome_1
Oracle user: oracle
Spfile: +DGDATA/racdb/spfileracdb.ora
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools: RACDB
Database instances: RACDB1,RACDB2
Disk Groups: DGOCR,DATA,FRA,DGDATA
Mount point paths:
Services:
Type: RAC
Database is administrator managed
重新启动数据库，检查spfile文件位置
SQL> show parameter spfile;
NAME???????????????????????????? ????TYPE??????? VALUE
------------------------------------ ----------- ------------------------------
spfile?????????????????????????????? string????? +DGDATA/racdb/spfileracdb.ora
4、修改控制文件位置
SQL> show parameter control
NAME????????????????????????????? ???TYPE??????? VALUE
------------------------------------ ----------- ------------------------------
control_file_record_keep_time??????? integer???? 7
control_files??????????????????????? string????? +DATA/racdb/controlfile/curren
??????????????????????? ?????????????????????????t.258.1082152397, +FRA/racdb/c
???????????????????????????????????????????????? ontrolfile/current.257.1082152
???????????????????????????????????????????????? 407
control_management_pack_access?????? string????? DIAGNOSTIC+TUNING
停止数据库实例
[oracle@host03 dbs]$ srvctl? stop? database -d racdb?????????
[oracle@host03 dbs]$ srvctl? status? database -d racdb?
Instance RACDB1 is not running on node host03
Instance RACDB2 is not running on node host04
将host03启动到nomount状态
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 3340451840 bytes
Fixed Size????????????????? 2257840 bytes
Variable Size??????????? 1962937424 bytes
Database Buffers???????? 1358954496 bytes
Redo Buffers?????????????? 16302080 bytes
SQL> quit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
恢复控制文件到指定位置
[oracle@host03 dbs]$ rman target /
Recovery Manager: Release 11.2.0.4.0 - Production on Mon Sep 6 22:31:50 2021
Copyright (c) 1982, 2011, Oracle and/or its affiliates.? All rights reserved.
connected to target database: RACDB (not mounted)
RMAN> restore controlfile to '+DGDATA' from '+DATA/racdb/controlfile/current.258.1082152397';
Starting restore at 06-SEP-21
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=97 instance=RACDB1 device type=DISK
channel ORA_DISK_1: copied control file copy
Finished restore at 06-SEP-21
RMAN> restore controlfile to '+DGFRA' from '+FRA/racdb/controlfile/current.257.1082152407';
Starting restore at 06-SEP-21
using channel ORA_DISK_1
channel ORA_DISK_1: copied control file copy
Finished restore at 06-SEP-21
查找具体控制文件名称
+dgdata/racdb/controlfile/current.258.1082586725
+dgfra/racdb/controlfile/current.256.1082586735
启动host03到mount状态
SQL> alter database mount ;
Database altered.
修改参数文件中控制文件的位置
alter system set control_files='+dgdata/racdb/controlfile/current.258.1082586725','+dgfra/racdb/controlfile/current.256.1082586735' scope=spfile sid='*';
关闭host03库
SQL> shutdown immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
开启库
[oracle@host03 ~]$ srvctl? start? database -d racdb??
[oracle@host03 ~]$ srvctl? status? database -d racdb
Instance RACDB1 is running on node host03
Instance RACDB2 is running on node host04
[oracle@host03 ~]$ srvctl? stop database -d racdb
[oracle@host03 ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Mon Sep 6 22:41:34 2021
Copyright (c) 1982, 2013, Oracle.? All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> show parameter control;
NAME???????????????????????????????? TYPE??????? VALUE
------------------------------------ ----------- ------------------------------
control_file_record_keep_time??????? integer???? 7
control_files??????????????????????? string????? +DGDATA/racdb/controlfile/curr
???????????????????????????????????????????? ????ent.258.1082586725, +DGFRA/rac
???????????????????????????????????????????????? db/controlfile/current.256.108
???????????????????????????????????????????????? 2586735
control_management_pack_access?????? string????? DIAGNOSTIC+TUNING
5、迁移数据文件backup as copy(host03库启动到mount状态)
SQL> select file_name from dba_data_files;
FILE_NAME
--------------------------------------------------------------------------------
+DATA/racdb/datafile/users.264.1082152951
+DATA/racdb/datafile/undotbs1.261.1082152943
+DATA/racdb/datafile/sysaux.260.1082152929
+DATA/racdb/datafile/system.259.1082152913
+DATA/racdb/datafile/undotbs2.262.1082152945
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 3340451840 bytes
Fixed Size????????????????? 2257840 bytes
Variable Size??????????? 1962937424 bytes
Database Buffers???????? 1358954496 bytes
Redo Buffers?????????????? 16302080 bytes
Database mounted.
迁移数据文件：
RMAN> backup as copy database format '+DGDATA';
RMAN> switch database to copy;
datafile 1 switched to datafile copy "+DGDATA/racdb/datafile/system.259.1082587719"
datafile 2 switched to datafile copy "+DGDATA/racdb/datafile/sysaux.260.1082587727"
datafile 3 switched to datafile copy "+DGDATA/racdb/datafile/undotbs1.261.1082587735"
datafile 4 switched to datafile copy "+DGDATA/racdb/datafile/users.264.1082587741"
datafile 5 switched to datafile copy "+DGDATA/racdb/datafile/undotbs2.262.1082587735"
SQL> alter database open;
Database altered.
SQL> select file_name from dba_data_files;
FILE_NAME
--------------------------------------------------------------------------------
+DGDATA/racdb/datafile/users.264.1082587741
+DGDATA/racdb/datafile/undotbs1.261.1082587735
+DGDATA/racdb/datafile/sysaux.260.1082587727
+DGDATA/racdb/datafile/system.259.1082587719
+DGDATA/racdb/datafile/undotbs2.262.1082587735
[oracle@host03 ~]$ srvctl? start? database -d racdb??
[oracle@host03 ~]$ srvctl? status? database -d racdb??
Instance RACDB1 is running on node host03
Instance RACDB2 is running on node host04
SQL> select tablespace_name from dba_tablespaces;
TABLESPACE_NAME
------------------------------
SYSTEM
SYSAUX
UNDOTBS1
TEMP
USERS
UNDOTBS2
6 rows selected.
替换临时文件
SQL> create temporary tablespace temp01 tempfile '+DGDATA' size 100M autoextend on maxsize 2g;
Tablespace created.
SQL> alter database default temporary tablespace temp01;
Database altered.
SQL> select tablespace_name from dba_tablespaces;
TABLESPACE_NAME
------------------------------
SYSTEM
SYSAUX
UNDOTBS1
TEMP
USERS
UNDOTBS2
TEMP01
7 rows selected.
SQL> drop tablespace temp including contents and datafiles;
Tablespace dropped.
SQL> select tablespace_name from dba_tablespaces;
TABLESPACE_NAME
------------------------------
SYSTEM
SYSAUX
UNDOTBS1
USERS
UNDOTBS2
TEMP01
6 rows selected.
修改redo文件位置（不改变组，添加组成员）
QL> select group#,thread#,bytes,members from v$log;
??? GROUP#??? THREAD#????? BYTES??? MEMBERS
---------- ---------- ---------- ----------
???????? 1????????? 1?? 52428800????????? 2
???????? 2????????? 1?? 52428800????????? 2
???????? 3????????? 2?? 52428800????????? 2
???????? 4????????? 2?? 52428800??? ??????2
SQL> select group#,status,member from v$logfile;
??? GROUP# STATUS? MEMBER
---------- ------- ------------------------------------------------------------
???????? 1???????? +DATA/racdb/onlinelog/group_1.268.1082155395
???????? 2???????? +DATA/racdb/onlinelog/group_2.269.1082155415
???????? 3???????? +DATA/racdb/onlinelog/group_3.270.1082155421
???????? 4???????? +DATA/racdb/onlinelog/group_4.271.1082155429
???????? 1???????? +DATA/racdb/onlinelog/group_1.266.1082155057
???????? 2???????? +DATA/racdb/onlinelog/group_2.267.1082155067
???????? 3???????? +FRA/racdb/onlinelog/group_3.258.1082155073
???????? 4???????? +FRA/racdb/onlinelog/group_4.259.1082155079
添加日志组
alter database add logfile member '+DGDATA' to group 1;
alter database add logfile member '+DGDATA' to group 2;
alter database add logfile member '+DGDATA' to group 3;
alter database add logfile member '+DGDATA' to group 4;
alter database add logfile member '+DGDATA' to group 1;
alter database add logfile member '+DGDATA' to group 2;
alter database add logfile member '+DGDATA' to group 3;
alter database add logfile member '+DGDATA' to group 4;
查看日志组
SQL> select group#,thread#,bytes,members from v$log;
??? GROUP#??? THREAD#????? BYTES??? MEMBERS
---------- ---------- ---------- ----------
???????? 1????????? 1?? 52428800????????? 4
???????? 2????????? 1?? 52428800????????? 4
???????? 3????????? 2?? 52428800????????? 4
???????? 4????????? 2?? 52428800????????? 4
SQL> select group#,status,member from v$logfile;
? ??GROUP# STATUS? MEMBER
---------- ------- ------------------------------------------------------------
???????? 1???????? +DATA/racdb/onlinelog/group_1.268.1082155395
???????? 2???????? +DATA/racdb/onlinelog/group_2.269.1082155415
???????? 3???????? +DATA/racdb/onlinelog/group_3.270.1082155421
???????? 4???????? +DATA/racdb/onlinelog/group_4.271.1082155429
???????? 1 INVALID +DGDATA/racdb/onlinelog/group_1.267.1082588959
???????? 1???????? +DATA/racdb/onlinelog/group_1.266.1082155057
???????? 2???????? +DATA/racdb/onlinelog/group_2.267.1082155067
???????? 3???????? +FRA/racdb/onlinelog/group_3.258.1082155073
???????? 2 INVALID +DGDATA/racdb/onlinelog/group_2.268.1082588967
???????? 3 INVALID +DGDATA/racdb/onlinelog/group_3.269.1082588975
???????? 4 INVALID +DGDATA/racdb/onlinelog/group_4.270.1082588981
??? GROUP# STATUS? MEMBER
---------- ------- ------------------------------------------------------------
???????? 4???????? +FRA/racdb/onlinelog/group_4.259.1082155079
???????? 1 INVALID +DGDATA/racdb/onlinelog/group_1.271.1082589049
???????? 2 INVALID +DGDATA/racdb/onlinelog/group_2.272.1082589057
???????? 3 INVALID +DGDATA/racdb/onlinelog/group_3.273.1082589063
???????? 4 INVALID +DGDATA/racdb/onlinelog/group_4.274.1082589069
删除组成员：
Alter database drop logfile member ‘+DATA/racdb/onlinelog/group_1.268.1082155395’;
通过切换日志组，删除日志成员；
SQL> select group#,status,member from v$logfile;
??? GROUP# STATUS? MEMBER
---------- ------- ------------------------------------------------------------
???????? 1???????? +DGDATA/racdb/onlinelog/group_1.267.1082588959
???????? 2???????? +DGDATA/racdb/onlinelog/group_2.268.1082588967
???????? 3???????? +DGDATA/racdb/onlinelog/group_3.269.1082588975
???????? 4???????? +DGDATA/racdb/onlinelog/group_4.270.1082588981
???????? 1???????? +DGDATA/racdb/onlinelog/group_1.271.1082589049
???????? 2???????? +DGDATA/racdb/onlinelog/group_2.272.1082589057
???????? 3???????? +DGDATA/racdb/onlinelog/group_3.273.1082589063
???????? 4???????? +DGDATA/racdb/onlinelog/group_4.274.1082589069
[oracle@host03 ~]$ srvctl? stop? database -d racdb????
[oracle@host03 ~]$ srvctl? start? database -d racdb
[oracle@host03 ~]$ srvctl? status? database -d racdb?
Instance RACDB1 is running on node host03
Instance RACDB2 is running on node host04
检查磁盘文件一致：
[oracle@host03 ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Mon Sep 6 23:30:08 2021
Copyright (c) 1982, 2013, Oracle.? All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> show parameter spfile;
NAME????????? ???????????????????????TYPE??????? VALUE
------------------------------------ ----------- ------------------------------
spfile?????????????????????????????? string????? +DGDATA/racdb/spfileracdb.ora
SQL> select file_name from dba_data_files;
FILE_NAME
--------------------------------------------------------------------------------
+DGDATA/racdb/datafile/users.264.1082587741
+DGDATA/racdb/datafile/undotbs1.261.1082587735
+DGDATA/racdb/datafile/sysaux.260.1082587727
+DGDATA/racdb/datafile/system.259.1082587719
+DGDATA/racdb/datafile/undotbs2.262.1082587735
SQL> select file_name from dba_temp_files;
FILE_NAME
--------------------------------------------------------------------------------
+DGDATA/racdb/tempfile/temp01.266.1082588257
SQL>
SQL>
SQL> show parameter control;
NAME???????????????????????????????? TYPE??????? VALUE
------------------------------------ ----------- ------------------------------
control_file_record_keep_time??????? integer???? 7
control_files??????????????????????? string????? +DGDATA/racdb/controlfile/curr
???????????????????????????????????????????????? ent.258.1082586725, +DGFRA/rac
???????????????????????????????????????????????? db/controlfile/current.256.108
???????????????????????????????????????????????? 2586735
control_management_pack_access?????? string????? DIAGNOSTIC+TUNING
6、删除磁盘组DATA、FRA（host03.host04节点）
[root@host03 ~]# su - grid
-bash-4.1$ sqlplus / as sysasm
SQL*Plus: Release 11.2.0.4.0 Production on Mon Sep 6 23:32:18 2021
Copyright (c) 1982, 2013, Oracle.? All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> alter diskgroup DATA dismount;
Diskgroup altered.
SQL> alter diskgroup fra dismount;
Diskgroup altered.
删除ASM磁盘组
SQL> drop diskgroup DATA force including contents;
Diskgroup dropped.
SQL> drop diskgroup FRA force including contents;
Diskgroup dropped.
CRS删除磁盘组
[oracle@host03 ~]$ srvctl remove diskgroup -g data -f
[oracle@host03 ~]$ srvctl remove diskgroup -g fra -f
[oracle@host03 ~]$ crsctl status res -t?????????????
--------------------------------------------------------------------------------
NAME???????? ??TARGET? STATE??????? SERVER?????????????????? STATE_DETAILS??????
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DGDATA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.DGFRA.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????? ???????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.DGOCR.dg
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04???????????????????????????? ??????????
ora.LISTENER.lsnr
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.asm
?????????????? ONLINE? ONLINE?????? host03???????????? ??????Started????????????
?????????????? ONLINE? ONLINE?????? host04?????????????????? Started????????????
ora.gsd
?????????????? OFFLINE OFFLINE????? host03??????????????????????????????????????
?????????????? OFFLINE OFFLINE????? host04??????????????????????????????????????
ora.net1.network
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.ons
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????????????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.registry.acfs
?????????????? ONLINE? ONLINE?????? host03??????????????????????????????????????
?????? ????????ONLINE? ONLINE?????? host04??????????????????????????????????????
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
????? 1??????? ONLINE? ONLINE?????? host03??????????????????????????????????????
ora.cvu
????? 1??????? ONLINE? ONLINE?????? host03??????????????????????????????????????
ora.host03.vip
????? 1??????? ONLINE? ONLINE?????? host03??? ???????????????????????????????????
ora.host04.vip
????? 1??????? ONLINE? ONLINE?????? host04??????????????????????????????????????
ora.oc4j
????? 1??????? ONLINE? ONLINE?????? host03??????????????????????????????????????
ora.racdb.db
????? 1??????? ONLINE? ONLINE?????? host03?????????????????? Open???????????????
????? 2??????? ONLINE? ONLINE?????? host04?????????????????? Open???????????????
ora.scan1.vip
????? 1??????? ONLINE? ONLINE?????? host03
更新CRS信息
[oracle@host03 ~]$ srvctl modify database -d racdb -a "DGOCR,DGDATA,DGFRA";
7、重新启动数据库，查看状态
SQL> select instance_name,status from gv$instance;
INSTANCE_NAME??? STATUS
---------------- ------------
RACDB2?????????? OPEN
RACDB1?????????? OPEN
检查rman备份配置
RMAN> SHOw all;
RMAN configuration parameters for database with db_unique_name RACDB are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '+FRA';
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+DGFRA/snapcf_RACDB.f';
备份一份数据（上面脚本）
8、删除硬件磁盘
[root@host03 oracle]# cat initdiskdel1.sh
## Delete asmdisk on host03
/etc/init.d/oracleasm deletedisk asmdisk1p1
/etc/init.d/oracleasm deletedisk asmdisk1p2
/etc/init.d/oracleasm deletedisk asmdisk1p3
/etc/init.d/oracleasm deletedisk asmdisk1p4
/etc/init.d/oracleasm deletedisk asmdisk1p5
/etc/init.d/oracleasm deletedisk asmdisk1p6
/etc/init.d/oracleasm deletedisk asmdisk1p7
/etc/init.d/oracleasm deletedisk asmdisk1p8
/etc/init.d/oracleasm deletedisk asmdisk2p1
/etc/init.d/oracleasm deletedisk asmdisk2p2
## Create disk asmdisk on host03
## Scan disk asmdisk on host03
/etc/init.d/oracleasm scandisks
/etc/init.d/oracleasm listdisks
## Scan disk asmdisk on host04
ssh host04 /etc/init.d/oracleasm scandisks
ssh host04 /etc/init.d/oracleasm listdisks
检查asm磁盘情况
[root@host03 oracle]# ll /dev/oracleasm/disks/
total 0
brw-rw---- 1 grid asmadmin 8, 33 Sep? 7 00:00 ASMDISK8P1
brw-rw---- 1 grid asmadmin 8, 34 Sep? 7 00:00 ASMDISK8P2
brw-rw---- 1 grid asmadmin 8, 35 Sep? 7 00:00 ASMDISK8P3
[oracle@host04 ~]$ ll /dev/oracleasm/disks/
total 0
brw-rw---- 1 grid asmadmin 8, 33 Sep? 7 00:00 ASMDISK8P1
brw-rw---- 1 grid asmadmin 8, 34 Sep? 7 00:00 ASMDISK8P2
brw-rw---- 1 grid asmadmin 8, 35 Sep? 7 00:00 ASMDISK8P3