Oracle 11g R2 RAC with ASM存储迁移--Rman copy&ASM Rebalance（一）
ASM GROUP-Rman copy迁移
0x00--环境介绍
VMware版本：VMware12pro
主机操作系统：RHEL6.5_64
共享存储使用VMWARE创建共享磁盘文件
数据库版本：Oracle11gR2 11.2.0.4.0_RAC
Oracle数据库文件部署在ASM磁盘组上，需要在不停机或者尽量短的停机时间完成存储迁移。由于只是设计存储更换，无需借助第三方工具。采取迁移ASM DISKGROUP的方式完成迁移。模拟现实环境中，ASM磁盘组存放在存储设备上，模拟由于设备升级、存储虚拟化整合或者存储设备淘汰，需要进行存储更换。
首先使用新建ASM GROUP,使用rman copy替换旧有的存储ASM group，然后再采取ASM Rebalance进行在线迁移回来。两种方法
0x01--迁移步骤
数据为重，首先应该有完整可恢复的数据备份，确保数据的安全性。再进行迁移。迁移前首先收集数据库现有的信息。
1) 划分asm disk，并检查或更改UDEV配置文件，使得新存储的asm disk对ASM实例可识别。 2) 备份OCR、Voting Disk、ASM disk header和数据库。 3) 创建新的DISKGROUP 4) 迁移OCR和Vote Disks到新磁盘组（ASM diskgroup） 5) 迁移ASM Spfile到新磁盘组（ASM diskgroup） 6) 迁移数据库相关文件至新磁盘组（ASM diskgroup） 7) 在线修改数据库参数文件（归档路径、闪回等） 8) 删除旧磁盘组 9) 观察期。 10) 执行数据库备份
0x02--新存储划分空间
模拟环境中，是用VMware创建共享磁盘文件实现新存储划分。新创建3个10G新共享存储磁盘，ndata1，ndata2，ndata3用于存放数据文件，新建3个1GB共享存储磁盘，nocr1，nocr2，nocr3，用于存放OCR与VOTE信息，将原存储上的数据全部迁移过来。
C:\Windows\system32>cd c:\VM\VM12 c:\VM\VM12>vmware-vdiskmanager.exe -c -s 10240Mb -a lsilogic -t 2 C:\VM\VM12\sharedisk\ndata1.vmdk
Creating disk 'C:\VM\VM12\sharedisk\ndata1.vmdk'
Create: 100% done.
Virtual disk creation successful. c:\VM\VM12>vmware-vdiskmanager.exe -c -s 10240Mb -a lsilogic -t 2 C:\VM\VM12\sharedisk\ndata2.vmdk
Creating disk 'C:\VM\VM12\sharedisk\ndata2.vmdk'
Create: 100% done.
Virtual disk creation successful. c:\VM\VM12>vmware-vdiskmanager.exe -c -s 10240Mb -a lsilogic -t 2 C:\VM\VM12\sharedisk\ndata3.vmdk
Creating disk 'C:\VM\VM12\sharedisk\ndata3.vmdk'
Create: 100% done.
Virtual disk creation successful. c:\VM\VM12>vmware-vdiskmanager.exe -c -s 1024Mb -a lsilogic -t 2 C:\VM\VM12\sharedisk\nocr1.vmdk
Creating disk 'C:\VM\VM12\sharedisk\nocr1.vmdk'
Create: 100% done.
Virtual disk creation successful. c:\VM\VM12>vmware-vdiskmanager.exe -c -s 1024Mb -a lsilogic -t 2 C:\VM\VM12\sharedisk\nocr2.vmdk
Creating disk 'C:\VM\VM12\sharedisk\nocr2.vmdk'
Create: 100% done.
Virtual disk creation successful. c:\VM\VM12>vmware-vdiskmanager.exe -c -s 1024Mb -a lsilogic -t 2 C:\VM\VM12\sharedisk\nocr3.vmdk
Creating disk 'C:\VM\VM12\sharedisk\nocr3.vmdk'
Create: 100% done.
Virtual disk creation successful.
0x03--虚拟机添加磁盘
选择独立模式，保留现有格式，磁盘设置，高级设置中，修改虚拟设备节点，与本地磁盘不在同一总线上。在两节点都添加6块新盘。
主机端识别新划盘：分别是sdh、sdi、sdj，三块10GB的磁盘，sdk，sdl，sdm，为3块1GB的磁盘。
0x04--Create New ASM diskgroup创建ASM DISKGROUP
查看当前ASM磁盘组信息
ASMCMD> lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED NORMAL N 512 4096 1048576 23529 18226 10236 3995 0 Y DATA/
MOUNTED EXTERN N 512 4096 1048576 10236 9709 0 9709 0 N ORADATA1/
ASMCMD> [grid@myrac1 ~]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 05:22:17 2017 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> select instance_name from v$instance; INSTANCE_NAME
----------------
+ASM1 SQL> col name for a10
SQL> set linesize 150
SQL> select NAME, ALLOCATION_UNIT_SIZE, STATE, TOTAL_MB, FREE_MB USABLE_FILE_MB from gv$asm_diskgroup; NAME ALLOCATION_UNIT_SIZE STATE TOTAL_MB USABLE_FILE_MB
---------- -------------------- ----------- ---------- --------------
DATA 1048576 MOUNTED 23529 18234
ORADATA1 1048576 MOUNTED 10236 9709
DATA 1048576 MOUNTED 23529 18234
ORADATA1 1048576 MOUNTED 10236 9709 SQL> select failgroup, name from v$asm_disk where group_number=(select group_number from v$asm_diskgroup where name = 'DATA'); FAILGROUP NAME
------------------------------ ----------
DATA2 DATA2
DATA3 DATA3
OCR1 OCR1
OCR2 OCR2
OCR3 OCR3 SQL> select NAME,PATH,total_mb,free_mb from v$asm_disk;
NAME PATH TOTAL_MB FREE_MB
---------- --------------- ---------- ----------
DATA1 ORCL:DATA1 10236 9709
DATA2 ORCL:DATA2 10236 8180
DATA3 ORCL:DATA3 10236 8200
OCR1 ORCL:OCR1 1019 612
OCR2 ORCL:OCR2 1019 618
OCR3 ORCL:OCR3 1019 616 6 rows selected. SQL>
fdisk 对新划磁盘进行分区,创建ASM磁盘
[root@myrac2 ~]# oracleasm listdisks
DATA1
DATA2
DATA3
OCR1
OCR2
OCR3
[root@myrac2 ~]# oracleasm createdisk NDATA1 /dev/sdh1
Writing disk header: done
Instantiating disk: done
[root@myrac2 ~]# oracleasm createdisk NDATA2 /dev/sdi1
Writing disk header: done
Instantiating disk: done
[root@myrac2 ~]# oracleasm createdisk NDATA3 /dev/sdj1
Writing disk header: done
Instantiating disk: done
[root@myrac2 ~]# oracleasm createdisk NOCR1 /dev/sdk1
Writing disk header: done
Instantiating disk: done
[root@myrac2 ~]# oracleasm createdisk NOCR2 /dev/sdl1
Writing disk header: done
Instantiating disk: done
[root@myrac2 ~]# oracleasm createdisk NOCR3 /dev/sdm1
Writing disk header: done
Instantiating disk: done
[root@myrac2 ~]# oracleasm listdisks
DATA1
DATA2
DATA3
NDATA1
NDATA2
NDATA3
NOCR1
NOCR2
NOCR3
OCR1
OCR2
OCR3
[root@myrac2 ~]# [root@myrac1 ~]# oracleasm scandisks
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...
Instantiating disk "NDATA1"
Instantiating disk "NDATA2"
Instantiating disk "NDATA3"
Instantiating disk "NOCR1"
Instantiating disk "NOCR2"
Instantiating disk "NOCR3"
[root@myrac1 ~]# oracleasm listdisks
DATA1
DATA2
DATA3
NDATA1
NDATA2
NDATA3
NOCR1
NOCR2
NOCR3
OCR1
OCR2
OCR3
[root@myrac1 ~]#
0x05--ASMCA创建新的ASM GROUP
SQL> CREATE DISKGROUP NDATA EXTERNAL REDUNDANCY DISK ' /dev/oracleasm/disks/NDATA1' ' /dev/oracleasm/disks/NDATA2 SIZE 10240M ATTRIBUTE 'compatible.asm'='11.2.0.0.
0','au_size'='1M' /* ASMCA */
SQL> CREATE DISKGROUP FRA2 EXTERNAL REDUNDANCY DISK '/dev/asm-diskl' SIZE 5120M ATTRIBUTE 'compatible.asm'='11.2.0.0.0'
,'au_size'='1M' /* ASMCA */ [grid@myrac1 ~]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 06:41:11 2017 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> select name,state from v$asm_diskgroup; NAME STATE
------------------------------ -----------
DATA MOUNTED
ORADATA1 MOUNTED
NDATA MOUNTED
NOCR MOUNTED SQL>
0x06--Moving OCR&VOTE DISK to new ASM diskgroup 迁移OCR和Vote Disks到新磁盘组
[grid@myrac1 ~]$ ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 262120
Used space (kbytes) : 3152
Available space (kbytes) : 258968
ID : 943942235
Device/File Name : +ORADATA1
Device/File integrity check succeeded Device/File not configured Device/File not configured Device/File not configured Device/File not configured Cluster registry integrity check succeeded Logical corruption check bypassed due to non-privileged user
添加OCR磁盘组
[root@myrac1 dev]# ocrconfig -add +NOCR
[root@myrac1 dev]# ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 262120
Used space (kbytes) : 3152
Available space (kbytes) : 258968
ID : 943942235
Device/File Name : +ORADATA1
Device/File integrity check succeeded
Device/File Name : +NOCR
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 [root@myrac1 dev]#
删除旧OCR磁盘组
[root@myrac1 ~]# ocrconfig -delete +ORADATA1
[root@myrac1 ~]# ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 262120
Used space (kbytes) : 3152
Available space (kbytes) : 258968
ID : 943942235
Device/File Name : +NOCR
Device/File integrity check succeeded Device/File not configured Device/File not configured Device/File not configured Device/File not configured Cluster registry integrity check succeeded Logical corruption check succeeded [root@myrac1 ~]#
查看votedisks信息，迁移至新磁盘组
[root@myrac1 ~]# crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 30f8194c62ee4f94bf0da8c5cdd174b6 (ORCL:OCR1) [DATA]
2. ONLINE 866e0b01fabc4f29bf3935f9c02bfaea (ORCL:OCR2) [DATA]
3. ONLINE 78a869e1fa844f65bf5b2b05cc93bb27 (ORCL:OCR3) [DATA]
Located 3 voting disk(s).
[root@myrac1 ~]#
[root@myrac1 ~]#
[root@myrac1 ~]# crsctl replace votedisk +NOCR
Successful addition of voting disk 89681e4b76bf4f0fbf09e8d5879af2d4.
Successful deletion of voting disk 30f8194c62ee4f94bf0da8c5cdd174b6.
Successful deletion of voting disk 866e0b01fabc4f29bf3935f9c02bfaea.
Successful deletion of voting disk 78a869e1fa844f65bf5b2b05cc93bb27.
Successfully replaced voting disk group with +NOCR.
CRS-4266: Voting file(s) successfully replaced
[root@myrac1 ~]# crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 89681e4b76bf4f0fbf09e8d5879af2d4 (ORCL:NOCR1) [NOCR]
Located 1 voting disk(s).
[root@myrac1 ~]#
0x07--Moving server side ASM SPfile to new ASM diskgroup
[grid@myrac1 ~]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 06:51:27 2017 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 +ORADATA1/myrac-cluster/asmpar
ameterfile/asmspfile.ora
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
[grid@myrac1 ~]$ asmcmd
ASMCMD> spget
+ORADATA1/myrac-cluster/asmparameterfile/asmspfile.ora
ASMCMD> exit
[grid@myrac1 ~]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 06:52:24 2017 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> create pfile='/tmp/asm_pfile.ora' from spfile; File created. SQL> create spfile='+NOCR' from pfile='/tmp/asm_pfile.ora'; File created. SQL>
查看ASM日志信息
Thu Feb 09 06:54:35 2017
NOTE: updated gpnp profile ASM diskstring:
NOTE: updated gpnp profile ASM SPFILE to +NOCR/myrac-cluster/asmparameterfile/registry.253.935477673
[grid@myrac1 ~]$ asmcmd
ASMCMD> spget
+NOCR/myrac-cluster/asmparameterfile/registry.253.935477673
ASMCMD>
0x08--Moving database related files to new ASM diskgroup
迁移控制文件
[oracle@myrac1 ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 07:00:06 2017 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 +DATA/myrac/controlfile/curren
t.256.935374197
control_management_pack_access string DIAGNOSTIC+TUNING
SQL> alter system set control_files='+NDATA' scope=spfile sid='*'; System altered. SQL> show parameter control NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_file_record_keep_time integer 7
control_files string +DATA/myrac/controlfile/curren
t.256.935374197
control_management_pack_access string DIAGNOSTIC+TUNING
SQL>
关闭数据库
[oracle@myrac1 ~]$ srvctl stop database -d myrac
[oracle@myrac1 ~]$
启动实例1到nomount状态
[oracle@myrac1 ~]$ srvctl start instance -d myrac -i myrac1 -o nomount
[oracle@myrac1 ~]$
RMAN Restore
[oracle@myrac1 ~]$ rman target / Recovery Manager: Release 11.2.0.4.0 - Production on Thu Feb 9 07:20:16 2017 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. connected to target database: MYRAC (not mounted) RMAN> restore controlfile from '+DATA/myrac/controlfile/current.256.935374197';
Starting restore at 09-FEB-17
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=34 instance=myrac1 device type=DISK channel ORA_DISK_1: copied control file copy
output file name=+NDATA/myrac/controlfile/current.257.935479241
Finished restore at 09-FEB-17 RMAN>
完成迁移
[oracle@myrac1 ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 07:22:11 2017 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> 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 +NDATA/myrac/controlfile/curre
nt.257.935479241
control_management_pack_access string DIAGNOSTIC+TUNING
SQL>
0x09--Moving SPfile to new ASM diskgroup
查看参数文件
SQL> show parameter spfile NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
spfile string +ORADATA1/myrac/spfilemyrac.or
a
SQL> create pfile='/tmp/pfile_db.ora' from spfile; File created. SQL> create spfile='+NDATA' from pfile='/tmp/pfile_db.ora'; File created. SQL>
ASMCMD移动SPFILE文件位置
[grid@myrac1 trace]$ asmcmd
ASMCMD> spget
+NOCR/myrac-cluster/asmparameterfile/registry.253.935477673
ASMCMD> ls
DATA/
NDATA/
NOCR/
ORADATA1/
ASMCMD> cd ndata
ASMCMD> ls
MYRAC/
ASMCMD> cd myrac
ASMCMD> ls
CONTROLFILE/
PARAMETERFILE/
ASMCMD> cd parameterfile
ASMCMD> ls
spfile.258.935480051
ASMCMD> mkalias +NDATA/myrac/parameterfile/spfile.258.935480051 +NDATA/myrac/spfilemyrac.ora
ASMCMD> ls -l
Type Redund Striped Time Sys Name
Y CONTROLFILE/
Y PARAMETERFILE/
N spfilemyrac.ora => +NDATA/MYRAC/PARAMETERFILE/spfile.258.935480051
ASMCMD>
编辑spfile
[oracle@myrac1 dbs]$ cat initmyrac1.ora
SPFILE='+ORADATA1/myrac/spfilemyrac.ora' # line added by Agent
[oracle@myrac1 dbs]$ vim initmyrac1.ora
[oracle@myrac1 dbs]$ cat initmyrac1.ora
SPFILE='+NDATA/myrac/spfilemyrac.ora' # line added by Agent
[oracle@myrac1 dbs]$ [oracle@myrac2 dbs]$ cat initmyrac2.ora
SPFILE='+ORADATA1/myrac/spfilemyrac.ora' # line added by Agent
[oracle@myrac2 dbs]$ vim initmyrac2.ora
[oracle@myrac2 dbs]$ cat initmyrac2.ora
SPFILE='+NDATA/myrac/spfilemyrac.ora' # line added by Agent
[oracle@myrac2 dbs]$
srvctl修改数据库参数文件位置
[oracle@myrac1 dbs]$ srvctl modify database -d myrac -p +NDATA/MYRAC/spfilemyrac.ora
[oracle@myrac1 dbs]$ srvctl config database -d myrac
Database unique name: myrac
Database name: myrac
Oracle home: /u01/app/oracle/product/11.2/db_1
Oracle user: oracle
Spfile: +NDATA/MYRAC/spfilemyrac.ora
Domain: weidong.zhang
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools: myrac
Database instances: myrac1,myrac2
Disk Groups: ORADATA1,DATA,NDATA
Mount point paths:
Services:
Type: RAC
Database is administrator managed
用新的spfile以及controlfile启动，验证正确性
[oracle@myrac1 ~]$ srvctl start database -d myrac
[oracle@myrac1 dbs]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 08:36:24 2017 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 +NDATA/myrac/spfilemyrac.ora
SQL>
SQL> show parameter control NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_file_record_keep_time integer 7
control_files string +NDATA/myrac/controlfile/curre
nt.257.935479241
control_management_pack_access string DIAGNOSTIC+TUNING
SQL>
0x0A--Moving data files to new ASM diskgroup
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination +DATA
Oldest online log sequence 35
Next log sequence to archive 36
Current log sequence 36 [oracle@myrac1 dbs]$ rman target / Recovery Manager: Release 11.2.0.4.0 - Production on Thu Feb 9 08:41:47 2017 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. connected to target database: MYRAC (DBID=42893065) RMAN> backup as copy database format '+NDATA'; Starting backup at 09-FEB-17
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=56 instance=myrac1 device type=DISK
channel ORA_DISK_1: starting datafile copy
input datafile file number=00001 name=+DATA/myrac/datafile/system.261.935388681
output file name=+NDATA/myrac/datafile/system.259.935484205 tag=TAG20170209T084324 RECID=16 STAMP=935484210
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
channel ORA_DISK_1: starting datafile copy
input datafile file number=00002 name=+DATA/myrac/datafile/sysaux.264.935388699
output file name=+NDATA/myrac/datafile/sysaux.260.935484213 tag=TAG20170209T084324 RECID=17 STAMP=935484218
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
channel ORA_DISK_1: starting datafile copy
input datafile file number=00006 name=+DATA/myrac/datafile/test_temp_tablespace.268.935388711
output file name=+NDATA/myrac/datafile/test_temp_tablespace.261.935484219 tag=TAG20170209T084324 RECID=18 STAMP=935484222
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
input datafile file number=00003 name=+DATA/myrac/datafile/undotbs1.265.935388707
output file name=+NDATA/myrac/datafile/undotbs1.262.935484223 tag=TAG20170209T084324 RECID=19 STAMP=935484223
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
channel ORA_DISK_1: starting datafile copy
input datafile file number=00005 name=+DATA/myrac/datafile/undotbs2.267.935388709
output file name=+NDATA/myrac/datafile/undotbs2.263.935484225 tag=TAG20170209T084324 RECID=20 STAMP=935484224
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
channel ORA_DISK_1: starting datafile copy
copying current control file
output file name=+NDATA/myrac/controlfile/backup.264.935484227 tag=TAG20170209T084324 RECID=21 STAMP=935484229
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
input datafile file number=00004 name=+DATA/myrac/datafile/users.266.935388709
output file name=+NDATA/myrac/datafile/users.265.935484231 tag=TAG20170209T084324 RECID=22 STAMP=935484231
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:04
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current SPFILE in backup set
channel ORA_DISK_1: starting piece 1 at 09-FEB-17
channel ORA_DISK_1: finished piece 1 at 09-FEB-17
piece handle=+NDATA/myrac/backupset/2017_02_09/nnsnf0_tag20170209t084324_0.266.935484233 tag=TAG20170209T084324 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03
Finished backup at 09-FEB-17 ==================================
[oracle@myrac1 ~]$ srvctl stop database -d myrac -o immediate
[oracle@myrac1 ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 08:47:32 2017 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to an idle instance. SQL> startup mount
ORACLE instance started. Total System Global Area 1653518336 bytes
Fixed Size 2253784 bytes
Variable Size 1493175336 bytes
Database Buffers 150994944 bytes
Redo Buffers 7094272 bytes
Database mounted.
SQL>
===============================================
[oracle@myrac1 dbs]$ rman target / Recovery Manager: Release 11.2.0.4.0 - Production on Thu Feb 9 08:48:39 2017 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. connected to target database: MYRAC (DBID=42893065, not open) RMAN> switch database to copy; using target database control file instead of recovery catalog
datafile 1 switched to datafile copy "+NDATA/myrac/datafile/system.259.935484205"
datafile 2 switched to datafile copy "+NDATA/myrac/datafile/sysaux.260.935484213"
datafile 3 switched to datafile copy "+NDATA/myrac/datafile/undotbs1.262.935484223"
datafile 4 switched to datafile copy "+NDATA/myrac/datafile/users.265.935484231"
datafile 5 switched to datafile copy "+NDATA/myrac/datafile/undotbs2.263.935484225"
datafile 6 switched to datafile copy "+NDATA/myrac/datafile/test_temp_tablespace.261.935484219" RMAN> recover database; Starting recover at 09-FEB-17
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=37 instance=myrac1 device type=DISK starting media recovery
media recovery complete, elapsed time: 00:00:01 Finished recover at 09-FEB-17 RMAN>
启动数据库
[oracle@myrac1 ~]$ srvctl stop database -d myrac
[oracle@myrac1 ~]$ srvctl start database -d myrac
[oracle@myrac1 dbs]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 08:57:56 2017 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>
SQL> SQL> select file_name from dba_data_files; FILE_NAME
--------------------------------------------------------------------------------
+NDATA/myrac/datafile/users.265.935484231
+NDATA/myrac/datafile/undotbs1.262.935484223
+NDATA/myrac/datafile/sysaux.260.935484213
+NDATA/myrac/datafile/system.259.935484205
+NDATA/myrac/datafile/undotbs2.263.935484225
+NDATA/myrac/datafile/test_temp_tablespace.261.935484219 6 rows selected. SQL>
0x0B--Moving temp files to new ASM diskgroup
SQL> select file_name from dba_temp_files; FILE_NAME
--------------------------------------------------------------------------------
+DATA/myrac/tempfile/temp.258.935389865 SQL>
修改db_create_file_dest参数
SQL> show parameter db_c NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_cache_advice string ON
db_cache_size big integer 0
db_create_file_dest string +DATA
db_create_online_log_dest_1 string
db_create_online_log_dest_2 string
db_create_online_log_dest_3 string
db_create_online_log_dest_4 string
db_create_online_log_dest_5 string
SQL> alter system set db_create_file_dest = '+NDATA'; System altered. SQL> show parameter db_c NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_cache_advice string ON
db_cache_size big integer 0
db_create_file_dest string +NDATA
db_create_online_log_dest_1 string
db_create_online_log_dest_2 string
db_create_online_log_dest_3 string
db_create_online_log_dest_4 string
db_create_online_log_dest_5 string
SQL>
增加临时文件
##由于已经设置了 db_create_file_dest参数，创建时会直接在NDATA上
SQL> select file_name from dba_temp_files; FILE_NAME
--------------------------------------------------------------------------------
+DATA/myrac/tempfile/temp.258.935389865 SQL> alter tablespace temp add tempfile; Tablespace altered. SQL> select file_name from dba_temp_files; FILE_NAME
--------------------------------------------------------------------------------
+NDATA/myrac/tempfile/temp.267.935485927
+DATA/myrac/tempfile/temp.258.935389865
删除原有临时文件
SQL> alter tablespace temp drop tempfile '+DATA/myrac/tempfile/temp.258.935389865'; Tablespace altered. SQL> select file_name from dba_temp_files; FILE_NAME
--------------------------------------------------------------------------------
+NDATA/myrac/tempfile/temp.267.935485927 SQL>
0x0C--Moving online redo log files to new ASM diskgroup
SQL> select group#,member from v$logfile;
GROUP# MEMBER
---------- ---------------------------------------------
1 +DATA/myrac/onlinelog/group_1.269.935390433
2 +DATA/myrac/onlinelog/group_2.270.935390443
3 +DATA/myrac/onlinelog/group_3.271.935390447
4 +DATA/myrac/onlinelog/group_4.272.935390453
1 +DATA/myrac/onlinelog/group_1.273.935390965
2 +DATA/myrac/onlinelog/group_2.274.935390973
3 +DATA/myrac/onlinelog/group_3.275.935390977
4 +DATA/myrac/onlinelog/group_4.276.935390983
8 rows selected.
将新磁盘组添加进logfile日志组
SQL> alter database add logfile member '+NDATA' ,'+NDATA' to group 1; Database altered. SQL> alter database add logfile member '+NDATA' ,'+NDATA' to group 2; Database altered. SQL> alter database add logfile member '+NDATA' ,'+NDATA' to group 3; Database altered. SQL> alter database add logfile member '+NDATA' ,'+NDATA' to group 4; Database altered. SQL> alter database add logfile member '+NDATA' ,'+NDATA' to group 5; Database altered.
删除原日志成员（注：切换为非当前日志进行删除）
依次删除原日志组成员
SQL>alter database drop logfile member '+DATA/myrac/onlinelog/group_3.275.935390977';
若无法删除，可进行手动日志切换
alter system switch logfile;
alter system checkpoint;
SQL> select log.group#,log.status,logfile.member from v$log log, v$logfile logfile where log.group#=logfile.group# order by group#;
GROUP# STATUS MEMBER
---------- ---------------- ---------------------------------------------
1 INACTIVE +NDATA/myrac/onlinelog/group_1.277.935488433
1 INACTIVE +NDATA/myrac/onlinelog/group_1.278.935489653
2 CURRENT +NDATA/myrac/onlinelog/group_2.269.935487101
2 CURRENT +NDATA/myrac/onlinelog/group_2.273.935487191
3 INACTIVE +NDATA/myrac/onlinelog/group_3.270.935487107
3 INACTIVE +NDATA/myrac/onlinelog/group_3.274.935487197
4 CURRENT +NDATA/myrac/onlinelog/group_4.271.935487115
4 CURRENT +NDATA/myrac/onlinelog/group_4.275.935487203
5 INACTIVE +NDATA/myrac/onlinelog/group_5.276.935487665
5 INACTIVE +NDATA/myrac/onlinelog/group_5.272.935490035
0x0D--修改闪回区，归档路径
SQL> show parameter recover NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest string +DATA
db_recovery_file_dest_size big integer 4407M
db_unrecoverable_scn_tracking boolean TRUE
recovery_parallelism integer 0
SQL>
SQL>
SQL> alter system set db_recovery_file_dest='+NDATA';
System altered.
SQL> show parameter recover NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest string +NDATA
db_recovery_file_dest_size big integer 4407M
db_unrecoverable_scn_tracking boolean TRUE
recovery_parallelism integer 0
SQL> archive log list
Database log mode Archive Mode
Automatic archival Enabled
Archive destination +DATA
Oldest online log sequence 50
Next log sequence to archive 51
Current log sequence 51
SQL> alter system set log_archive_dest_1='location=+NDATA'; System altered.
SQL> archive log list
Database log mode Archive Mode
Automatic archival Enabled
Archive destination +NDATA
Oldest online log sequence 50
Next log sequence to archive 51
Current log sequence 51
SQL>
0x0E--Dropping old disk groups,删除旧磁盘组
[grid@myrac1 ~]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 10:45:50 2017 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 oradata1 dismount; Diskgroup altered. [grid@myrac2 ~]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.4.0 Production on Thu Feb 9 10:51:39 2017 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 oradata1 dismount; Diskgroup altered. SQL> SQL> drop diskgroup data including contents;
drop diskgroup data including contents
*
ERROR at line 1:
ORA-15039: diskgroup not dropped
ORA-15001: diskgroup "DATA" does not exist or is not mounted
SQL> drop diskgroup data force including contents;
drop diskgroup data force including contents
*
ERROR at line 1:
ORA-15039: diskgroup not dropped
ORA-15073: diskgroup DATA is mounted by another ASM instance SQL> drop diskgroup data force including contents; Diskgroup dropped. SQL> drop diskgroup oradata1 force including contents; Diskgroup dropped. SQL>
Remove the disks from OCR
[root@myrac1 ~]# srvctl remove diskgroup -g DATA
PRCA-1002 : Failed to remove CRS resource ora.DATA.dg for ASM Disk Group DATA
PRCR-1028 : Failed to remove resource ora.DATA.dg
PRCR-1072 : Failed to unregister resource ora.DATA.dg
CRS-0222: Resource 'ora.DATA.dg' has dependency error.
[root@myrac1 ~]# srvctl modify database -d myrac -a "NDATA,NOCR"
[root@myrac1 ~]# srvctl remove diskgroup -g DATA
[root@myrac1 ~]# srvctl remove diskgroup -g ORADATA1
至此已经全部完成存储迁移。其中需要多次重启数据库，有少量停机时间，做好数据备份。
---本文首发于本人的云栖社区博客
0x0F--ASM rebalance迁移详见下篇随笔
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