今天看着我这个单节点的12C rac,突然觉得ocr所在的磁盘组叫做+DG_SYS有点不舒服，想改成+SYS_DG。处理方法是先把ocr/votedisk/asm spfile迁移到已经存在的asm中,然后修改磁盘组名称,最后迁移到新名称磁盘组中(本次处理流程+DG_SYS—>+DATA—>+SYS_DG)
当前运行情况

[grid@xifenfei ~]$ crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DATA.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.net1.network
               ONLINE  ONLINE       xifenfei                 STABLE
ora.ons
               ONLINE  ONLINE       xifenfei                 STABLE
ora.proxy_advm
               ONLINE  OFFLINE      xifenfei                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       xifenfei                 169.254.196.108 10.1
                                                             0.30.22,STABLE
ora.asm
      1        ONLINE  ONLINE       xifenfei                 Started,STABLE
      2        OFFLINE OFFLINE                               STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cdb.db
      1        ONLINE  ONLINE       xifenfei                 Open,STABLE
ora.cvu
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.oc4j
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.xifenfei.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
--------------------------------------------------------------------------------
SQL> select * from v$version;
BANNER                                                                               CON_ID
-------------------------------------------------------------------------------- ----------
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production              0
PL/SQL Release 12.1.0.1.0 - Production                                                    0
CORE    12.1.0.1.0      Production                                                                0
TNS for Linux: Version 12.1.0.1.0 - Production                                            0
NLSRTL Version 12.1.0.1.0 - Production                                                    0
SQL> select name,state from v$asm_diskgroup;
NAME                           STATE
------------------------------ -----------
DG_SYS                         MOUNTED
DATA                           MOUNTED
[grid@xifenfei ~]$ crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
1. ONLINE   60a037da30714f6bbfe5d90206ff27a7 (/dev/sdc2) [DG_SYS]
Located 1 voting disk(s).
[grid@xifenfei ~]$ ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1380
         Available space (kbytes) :     408188
         ID                       : 2132096904
         Device/File Name         :    +DG_SYS
                                    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
SQL> show parameter spfile;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      +DG_SYS/xff-cluster/ASMPARAMET
                                                 ERFILE/registry.253.825640465

修改ocr路径
ocrconfig -add和ocrconfig -delete完成ocr更换磁盘组,该过程可以在线处理

[root@xifenfei ~]# ocrconfig -add +data
--alert 日志
2013-09-09 22:32:40.799:
[crsd(5064)]CRS-1007:The OCR/OCR mirror location was replaced by +data.
[root@xifenfei ~]# ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1380
         Available space (kbytes) :     408188
         ID                       : 2132096904
         Device/File Name         :    +DG_SYS
                                    Device/File integrity check succeeded
         Device/File Name         :      +data
                                    Device/File integrity check succeeded
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
         Cluster registry integrity check succeeded
[root@xifenfei ~]# ocrconfig -delete +DG_SYS
--alert 日志
2013-09-09 22:35:53.585:
[crsd(5064)]CRS-1010:The OCR mirror location +DG_SYS was removed.
[root@xifenfei ~]# ocrcheck
Status of Oracle Cluster Registry is as follows :
         Version                  :          4
         Total space (kbytes)     :     409568
         Used space (kbytes)      :       1380
         Available space (kbytes) :     408188
         ID                       : 2132096904
         Device/File Name         :      +data
                                    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

修改votedisk路径
通过crsctl replace votedisk命令修改

[root@xifenfei ~]# crsctl replace votedisk +DATA
Successful addition of voting disk 161ddea0a5fe4f28bfb67536e6105122.
Successful deletion of voting disk 60a037da30714f6bbfe5d90206ff27a7.
Successfully replaced voting disk group with +DATA.
CRS-4266: Voting file(s) successfully replaced
-alert日志
2013-09-09 22:38:15.259:
[cssd(4685)]CRS-1605:CSSD voting file is online: /dev/sdb; details in /u01/app/12.1/grid/product/log/xifenfei/cssd/ocssd.log.
2013-09-09 22:38:15.259:
[cssd(4685)]CRS-1626:A Configuration change request completed successfully
2013-09-09 22:38:15.285:
[cssd(4685)]CRS-1601:CSSD Reconfiguration complete. Active nodes are xifenfei .
[root@xifenfei ~]# crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
1. ONLINE   161ddea0a5fe4f28bfb67536e6105122 (/dev/sdb) [DATA]
Located 1 voting disk(s).

修改asm spfile位置

[grid@xifenfei ~]$  gpnptool get -o-
Success.
…………
<orcl:ASM-Profile id="asm" DiscoveryString="/dev/sd*" SPFile="+DG_SYS/xff-cluster/ASMPARAMETERFILE/registry.253.825640465" Mode="legacy"/>
…………
[grid@xifenfei ~]$ sqlplus / as sysasm
SQL*Plus: Release 12.1.0.1.0 Production on Mon Sep 9 22:42:05 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> create pfile='/tmp/pfile.asm' from spfile;
File created.
SQL> create spfile='+DATA' FROM PFILE='/tmp/pfile.asm';
File created.
[grid@xifenfei ~]$  gpnptool get -o-
Success.
…………
<orcl:ASM-Profile id="asm" DiscoveryString="/dev/sd*" SPFile="+DATA/xff-cluster/ASMPARAMETERFILE/registry.253.825720159" Mode="legacy"/>
…………

这里证明create asm spfile会自动修改spfile在gpnptool对应的profile里面的配置,无需人工干预

重启crs
为了使得asm使用新的磁盘组中的spfile文件

[root@xifenfei ~]# crsctl stop crs
[root@xifenfei ~]# crsctl start crs

验证+DG_SYS磁盘组未被使用

[grid@xifenfei ~]$ sqlplus / as sysasm
SQL*Plus: Release 12.1.0.1.0 Production on Mon Sep 9 22:59:49 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> show parameter spfile;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      +DATA/xff-cluster/ASMPARAMETER
                                                 FILE/registry.253.825720159
ASMCMD> lsof
DB_Name  Instance_Name  Path
+ASM     +ASM1          +DATA.255.819326577
cdb      cdb1           +DATA/CDB/CONTROLFILE/current.274.819356503
cdb      cdb1           +DATA/CDB/DATAFILE/sysaux.278.819355829
cdb      cdb1           +DATA/CDB/DATAFILE/system.269.819356101
cdb      cdb1           +DATA/CDB/DATAFILE/undotbs1.276.819356317
cdb      cdb1           +DATA/CDB/DATAFILE/users.279.819356309
cdb      cdb1           +DATA/CDB/DD7C48AA5A4404A2E04325AAE80A403C/DATAFILE/pdbseed_temp01.dbf
cdb      cdb1           +DATA/CDB/DD7C48AA5A4404A2E04325AAE80A403C/DATAFILE/sysaux.272.819356709
cdb      cdb1           +DATA/CDB/DD7C48AA5A4404A2E04325AAE80A403C/DATAFILE/system.271.819356709
cdb      cdb1           +DATA/CDB/ONLINELOG/group_1.277.822736453
cdb      cdb1           +DATA/CDB/ONLINELOG/group_2.280.822736461
cdb      cdb1           +DATA/CDB/ONLINELOG/group_3.275.822736397
cdb      cdb1           +DATA/CDB/TEMPFILE/temp.273.819356649

dismount +DG_SYS磁盘组

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  EXTERN  N         512   4096  1048576     20480     3369                0            3369              0             Y  DATA/
MOUNTED  EXTERN  N         512   4096  1048576      5451     5231                0            5231              0             N  DG_SYS/
ASMCMD> umount dg_sys
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  EXTERN  N         512   4096  1048576     20480     3369                0            3369              0             Y  DATA/

修改asm dg名称
修改磁盘组+DG_SYS为+SYS_DG

[grid@xifenfei ~]$ renamedg phase=both dgname=DG_SYS newdgname=SYS_DG verbose=true
Parsing parameters..
Parameters in effect:
         Old DG name       : DG_SYS
         New DG name          : SYS_DG
         Phases               :
                 Phase 1
                 Phase 2
         Discovery str        : (null)
         Clean              : TRUE
         Raw only           : TRUE
renamedg operation: phase=both dgname=DG_SYS newdgname=SYS_DG verbose=true
Executing phase 1
Discovering the group
Performing discovery with string:
Identified disk UFS:/dev/sdc2 with disk number:0 and timestamp (32990496 1727895552)
Checking for hearbeat...
Re-discovering the group
Performing discovery with string:
Identified disk UFS:/dev/sdc2 with disk number:0 and timestamp (32990496 1727895552)
Checking if the diskgroup is mounted or used by CSS
Checking disk number:0
Generating configuration file..
Completed phase 1
Executing phase 2
Looking for /dev/sdc2
Modifying the header
Completed phase 2
Terminating kgfd context 0x7fceeb02a0a0

mount +SYS_DG

SQL> select name,state from v$asm_diskgroup;
NAME                           STATE
------------------------------ -----------
DATA                           MOUNTED
SYS_DG                         DISMOUNTED
SQL> alter diskgroup sys_dg mount;
Diskgroup altered.
SQL>  select name,state from v$asm_diskgroup;
NAME                           STATE
------------------------------ -----------
DATA                           MOUNTED
SYS_DG                         MOUNTED

asm spfile/ocr/votedisk迁移从+DATA到+SYS_DG

SQL> create spfile='+SYS_DG' FROM pfile='/tmp/pfile.asm';
File created.
[root@xifenfei ~]# ocrconfig -add +SYS_DG
[root@xifenfei ~]# ocrconfig -DELETE +DATA
[root@xifenfei ~]# crsctl replace votedisk +SYS_DG
Successful addition of voting disk 9694a31053ea4ff4bfb57891461a1296.
Successful deletion of voting disk 161ddea0a5fe4f28bfb67536e6105122.
Successfully replaced voting disk group with +SYS_DG.
CRS-4266: Voting file(s) successfully replaced
[root@xifenfei ~]# crsctl stop crs
[root@xifenfei ~]# crsctl start crs

删除ocr里面老磁盘组(+DG_SYS)信息

[root@xifenfei ~]# crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DATA.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DG_SYS.dg
               ONLINE  OFFLINE      xifenfei                 STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.SYS_DG.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.net1.network
               ONLINE  ONLINE       xifenfei                 STABLE
ora.ons
               ONLINE  ONLINE       xifenfei                 STABLE
ora.proxy_advm
               ONLINE  OFFLINE      xifenfei                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       xifenfei                 169.254.196.108 10.1
                                                             0.30.22,STABLE
ora.asm
      1        ONLINE  ONLINE       xifenfei                 Started,STABLE
      2        OFFLINE OFFLINE                               STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cdb.db
      1        ONLINE  ONLINE       xifenfei                 Open,STABLE
ora.cvu
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.oc4j
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.xifenfei.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
--------------------------------------------------------------------------------
[root@xifenfei ~]# srvctl remove diskgroup -diskgroup dg_sys
[root@xifenfei ~]# crsctl status res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.DATA.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       xifenfei                 STABLE
ora.SYS_DG.dg
               ONLINE  ONLINE       xifenfei                 STABLE
ora.net1.network
               ONLINE  ONLINE       xifenfei                 STABLE
ora.ons
               ONLINE  ONLINE       xifenfei                 STABLE
ora.proxy_advm
               ONLINE  OFFLINE      xifenfei                 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.MGMTLSNR
      1        ONLINE  ONLINE       xifenfei                 169.254.196.108 10.1
                                                             0.30.22,STABLE
ora.asm
      1        ONLINE  ONLINE       xifenfei                 Started,STABLE
      2        OFFLINE OFFLINE                               STABLE
      3        OFFLINE OFFLINE                               STABLE
ora.cdb.db
      1        ONLINE  ONLINE       xifenfei                 Open,STABLE
ora.cvu
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.oc4j
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
ora.xifenfei.vip
      1        ONLINE  ONLINE       xifenfei                 STABLE
--------------------------------------------------------------------------------

至此ocr/votedisk/asm spfile所在磁盘组修改名称完成,因为该库是一个单节点的rac,如果是两个或者更多节点的rac可以实现不停机的情况下进行(分步重启节点).该处理过程和11.2 rac完全相同,未有任何的改变