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最近发表
- 断电引起的ORA-08102: 未找到索引关键字, 对象号 39故障处理
- ORA-00227: corrupt block detected in control file
- 手工删除19c rac
- 解决oracle数据文件路径有回车故障
- .wstop扩展名勒索数据库恢复
- Oracle Recovery Tools工具一键解决ORA-00376 ORA-01110故障（文件offline）
- OGG-02771 Input trail file format RELEASE 19.1 is different from previous trail file form at RELEASE 11.2.
- OGG-02246 Source redo compatibility level 19.0.0 requires trail FORMAT 12.2 or higher
- GoldenGate 19安装和打patch
- dd破坏asm磁盘头恢复
- 删除asmlib磁盘导致磁盘组故障恢复
- Kylin Linux 安装19c
- ORA-600 krse_arc_complete.4
- Oracle 19c 202410补丁（RUs+OJVM）
- ntfs MFT损坏(ntfs文件系统故障)导致oracle异常恢复
- .mkp扩展名oracle数据文件加密恢复
- 清空redo,导致ORA-27048: skgfifi: file header information is invalid
- A_H_README_TO_RECOVER勒索恢复
- 通过alert日志分析客户自行对一个数据库恢复的来龙去脉和点评
- ORA-12514: TNS: 监听进程不能解析在连接描述符中给出的SERVICE_NAME
标签归档：ORACLE 12C RAC HUB LEAF
ORACLE 12C RAC hub AND leaf 相互转换
感谢Lunar的指导,完成ORACLE 12C RAC hub和leaf相互转换,参考官方文档Oracle Flex Clusters部分
当前数据库状态
--集群状态
[root@rac1 ~]# crsctl status res -t
--------------------------------------------------------------------------------
Name Target State Server State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.DATA.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.LISTENER.lsnr
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.SYSDB_NEW.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.SYSDG.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.net1.network
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.ons
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.proxy_advm
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE rac1 STABLE
ora.LISTENER_SCAN2.lsnr
1 ONLINE ONLINE rac2 STABLE
ora.LISTENER_SCAN3.lsnr
1 ONLINE ONLINE rac2 STABLE
ora.MGMTLSNR
1 ONLINE ONLINE rac2 169.254.177.226 10.1
.1.104,STABLE
ora.asm
1 ONLINE ONLINE rac1 STABLE
2 ONLINE ONLINE rac2 STABLE
3 OFFLINE OFFLINE STABLE
ora.cvu
1 ONLINE ONLINE rac2 STABLE
ora.gns
1 ONLINE ONLINE rac2 STABLE
ora.gns.vip
1 ONLINE ONLINE rac2 STABLE
ora.mgmtdb
1 ONLINE ONLINE rac2 Open,STABLE
ora.oc4j
1 ONLINE ONLINE rac2 STABLE
ora.ora12c.db
1 ONLINE ONLINE rac1 Open,STABLE
2 ONLINE ONLINE rac2 Open,STABLE
ora.rac1.vip
1 ONLINE ONLINE rac1 STABLE
ora.rac2.vip
1 ONLINE ONLINE rac2 STABLE
ora.scan1.vip
1 ONLINE ONLINE rac1 STABLE
ora.scan2.vip
1 ONLINE ONLINE rac2 STABLE
ora.scan3.vip
1 ONLINE ONLINE rac2 STABLE
--------------------------------------------------------------------------------
--rac运行在flex模式
[root@rac1 ~]# crsctl get cluster mode status
Cluster is running in "flex" mode
--asm运行在flex模式
[grid@rac1 ~]$ asmcmd
ASMCMD> showclustermode
ASM cluster : Flex mode enabled
--节点角色
[root@rac1 ~]# crsctl get node role config
Node 'rac1' configured role is 'hub'
[root@rac2 ~]# crsctl get node role config
Node 'rac2' configured role is 'hub'
转换hub to leaf
--转换hub为leaf
[root@rac1 ~]# crsctl set node role leaf
CRS-4408: Node 'rac1' configured role successfully changed; restart Oracle High Availability Services for new role to take effect.
--关闭集群
[root@rac1 ~]# crsctl stop crs
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'rac1'
CRS-2673: Attempting to stop 'ora.crsd' on 'rac1'
CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on 'rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN1.lsnr' on 'rac1'
CRS-2673: Attempting to stop 'ora.LISTENER.lsnr' on 'rac1'
CRS-2673: Attempting to stop 'ora.SYSDB_NEW.dg' on 'rac1'
CRS-2673: Attempting to stop 'ora.DATA.dg' on 'rac1'
CRS-2673: Attempting to stop 'ora.SYSDG.dg' on 'rac1'
CRS-2673: Attempting to stop 'ora.ora12c.db' on 'rac1'
CRS-2673: Attempting to stop 'ora.proxy_advm' on 'rac1'
CRS-2677: Stop of 'ora.LISTENER.lsnr' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.rac1.vip' on 'rac1'
CRS-2677: Stop of 'ora.LISTENER_SCAN1.lsnr' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.scan1.vip' on 'rac1'
CRS-2677: Stop of 'ora.rac1.vip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.rac1.vip' on 'rac2'
CRS-2677: Stop of 'ora.ora12c.db' on 'rac1' succeeded
CRS-2677: Stop of 'ora.scan1.vip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.scan1.vip' on 'rac2'
CRS-2676: Start of 'ora.rac1.vip' on 'rac2' succeeded
CRS-2677: Stop of 'ora.SYSDB_NEW.dg' on 'rac1' succeeded
CRS-2676: Start of 'ora.scan1.vip' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.LISTENER_SCAN1.lsnr' on 'rac2'
CRS-2677: Stop of 'ora.DATA.dg' on 'rac1' succeeded
CRS-2677: Stop of 'ora.SYSDG.dg' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'rac1'
CRS-2677: Stop of 'ora.asm' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.ASMNET1LSNR_ASM.lsnr' on 'rac1'
CRS-2676: Start of 'ora.LISTENER_SCAN1.lsnr' on 'rac2' succeeded
CRS-2677: Stop of 'ora.proxy_advm' on 'rac1' succeeded
CRS-2677: Stop of 'ora.ASMNET1LSNR_ASM.lsnr' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.ons' on 'rac1'
CRS-2677: Stop of 'ora.ons' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.net1.network' on 'rac1'
CRS-2677: Stop of 'ora.net1.network' on 'rac1' succeeded
CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'rac1' has completed
CRS-2677: Stop of 'ora.crsd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.storage' on 'rac1'
CRS-2673: Attempting to stop 'ora.crf' on 'rac1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac1'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'rac1'
CRS-2677: Stop of 'ora.storage' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.asm' on 'rac1'
CRS-2677: Stop of 'ora.drivers.acfs' on 'rac1' succeeded
CRS-2677: Stop of 'ora.crf' on 'rac1' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.asm' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'rac1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.ctssd' on 'rac1'
CRS-2673: Attempting to stop 'ora.evmd' on 'rac1'
CRS-2677: Stop of 'ora.evmd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.ctssd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'rac1'
CRS-2677: Stop of 'ora.cssd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'rac1'
CRS-2677: Stop of 'ora.gipcd' on 'rac1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'rac1' has completed
CRS-4133: Oracle High Availability Services has been stopped.
--启动集群
[root@rac1 ~]# crsctl start crs -wait
CRS-4123: Starting Oracle High Availability Services-managed resources
CRS-2672: Attempting to start 'ora.mdnsd' on 'rac1'
CRS-2672: Attempting to start 'ora.evmd' on 'rac1'
CRS-2676: Start of 'ora.evmd' on 'rac1' succeeded
CRS-2676: Start of 'ora.mdnsd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'rac1'
CRS-2676: Start of 'ora.gpnpd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gipcd' on 'rac1'
CRS-2676: Start of 'ora.gipcd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac1'
CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'rac1'
CRS-2672: Attempting to start 'ora.diskmon' on 'rac1'
CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded
CRS-2789: Cannot stop resource 'ora.diskmon' as it is not running on server 'rac1'
CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'rac1'
CRS-2672: Attempting to start 'ora.ctssd' on 'rac1'
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'rac1' succeeded
CRS-2676: Start of 'ora.ctssd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.storage' on 'rac1'
CRS-2676: Start of 'ora.storage' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.crf' on 'rac1'
CRS-2676: Start of 'ora.crf' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.crsd' on 'rac1'
CRS-2676: Start of 'ora.crsd' on 'rac1' succeeded
CRS-6017: Processing resource auto-start for servers: rac1
CRS-6016: Resource auto-start has completed for server rac1
CRS-6024: Completed start of Oracle Cluster Ready Services-managed resources
CRS-4123: Oracle High Availability Services has been started.
--hub转换为leaf后状态
[root@rac1 ~]# crsctl stat res -t
--------------------------------------------------------------------------------
Name Target State Server State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
ONLINE ONLINE rac2 STABLE
ora.DATA.dg
ONLINE ONLINE rac2 STABLE
ora.LISTENER.lsnr
ONLINE ONLINE rac2 STABLE
ora.SYSDB_NEW.dg
ONLINE ONLINE rac2 STABLE
ora.SYSDG.dg
ONLINE ONLINE rac2 STABLE
ora.net1.network
ONLINE ONLINE rac2 STABLE
ora.ons
ONLINE ONLINE rac2 STABLE
ora.proxy_advm
ONLINE ONLINE rac2 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE rac2 STABLE
ora.LISTENER_SCAN2.lsnr
1 ONLINE ONLINE rac2 STABLE
ora.LISTENER_SCAN3.lsnr
1 ONLINE ONLINE rac2 STABLE
ora.MGMTLSNR
1 ONLINE ONLINE rac2 169.254.177.226 10.1
.1.104,STABLE
ora.asm
1 ONLINE OFFLINE STABLE
2 ONLINE ONLINE rac2 STABLE
3 OFFLINE OFFLINE STABLE
ora.cvu
1 ONLINE ONLINE rac2 STABLE
ora.gns
1 ONLINE ONLINE rac2 STABLE
ora.gns.vip
1 ONLINE ONLINE rac2 STABLE
ora.mgmtdb
1 ONLINE ONLINE rac2 Open,STABLE
ora.oc4j
1 ONLINE ONLINE rac2 STABLE
ora.ora12c.db
1 ONLINE OFFLINE Instance Shutdown,ST
ABLE
2 ONLINE ONLINE rac2 Open,STABLE
ora.rac1.vip
1 ONLINE INTERMEDIATE rac2 FAILED OVER,STABLE
ora.rac2.vip
1 ONLINE ONLINE rac2 STABLE
ora.scan1.vip
1 ONLINE ONLINE rac2 STABLE
ora.scan2.vip
1 ONLINE ONLINE rac2 STABLE
ora.scan3.vip
1 ONLINE ONLINE rac2 STABLE
--------------------------------------------------------------------------------
--集群角色
[root@rac1 ~]# crsctl get node role config
Node 'rac1' configured role is 'leaf'
[root@rac2 ~]# crsctl get node role config
Node 'rac2' configured role is 'hub'
leaf转换为hub
--leaf转换为hub
[root@rac1 ~]# crsctl set node role hub
CRS-4408: Node 'rac1' configured role successfully changed; restart Oracle High Availability Services for new role to take effect.
--关闭集群
[root@rac1 ~]# crsctl stop crs
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'rac1'
CRS-2673: Attempting to stop 'ora.crsd' on 'rac1'
CRS-2677: Stop of 'ora.crsd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.storage' on 'rac1'
CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac1'
CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac1'
CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'rac1'
CRS-2677: Stop of 'ora.storage' on 'rac1' succeeded
CRS-2677: Stop of 'ora.drivers.acfs' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.crf' on 'rac1'
CRS-2673: Attempting to stop 'ora.ctssd' on 'rac1'
CRS-2673: Attempting to stop 'ora.evmd' on 'rac1'
CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'rac1'
CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'rac1' succeeded
CRS-2677: Stop of 'ora.gpnpd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.crf' on 'rac1' succeeded
CRS-2677: Stop of 'ora.evmd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.mdnsd' on 'rac1' succeeded
CRS-2677: Stop of 'ora.ctssd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on 'rac1'
CRS-2677: Stop of 'ora.cssd' on 'rac1' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on 'rac1'
CRS-2677: Stop of 'ora.gipcd' on 'rac1' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'rac1' has completed
CRS-4133: Oracle High Availability Services has been stopped.
--启动集群
[root@rac1 ~]# crsctl start crs -wait
CRS-4123: Starting Oracle High Availability Services-managed resources
CRS-2672: Attempting to start 'ora.mdnsd' on 'rac1'
CRS-2672: Attempting to start 'ora.evmd' on 'rac1'
CRS-2676: Start of 'ora.evmd' on 'rac1' succeeded
CRS-2676: Start of 'ora.mdnsd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'rac1'
CRS-2676: Start of 'ora.gpnpd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gipcd' on 'rac1'
CRS-2676: Start of 'ora.gipcd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac1'
CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'rac1'
CRS-2672: Attempting to start 'ora.diskmon' on 'rac1'
CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded
CRS-2789: Cannot stop resource 'ora.diskmon' as it is not running on server 'rac1'
CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'rac1'
CRS-2672: Attempting to start 'ora.ctssd' on 'rac1'
CRS-2676: Start of 'ora.ctssd' on 'rac1' succeeded
CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'rac1'
CRS-2676: Start of 'ora.asm' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.storage' on 'rac1'
CRS-2676: Start of 'ora.storage' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.crf' on 'rac1'
CRS-2676: Start of 'ora.crf' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.crsd' on 'rac1'
CRS-2676: Start of 'ora.crsd' on 'rac1' succeeded
CRS-6017: Processing resource auto-start for servers: rac1
CRS-2672: Attempting to start 'ora.ons' on 'rac1'
CRS-2673: Attempting to stop 'ora.rac1.vip' on 'rac2'
CRS-2672: Attempting to start 'ora.ASMNET1LSNR_ASM.lsnr' on 'rac1'
CRS-2673: Attempting to stop 'ora.LISTENER_SCAN1.lsnr' on 'rac2'
CRS-2677: Stop of 'ora.LISTENER_SCAN1.lsnr' on 'rac2' succeeded
CRS-2673: Attempting to stop 'ora.scan1.vip' on 'rac2'
CRS-2677: Stop of 'ora.rac1.vip' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.rac1.vip' on 'rac1'
CRS-2677: Stop of 'ora.scan1.vip' on 'rac2' succeeded
CRS-2672: Attempting to start 'ora.scan1.vip' on 'rac1'
CRS-2676: Start of 'ora.rac1.vip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER.lsnr' on 'rac1'
CRS-2676: Start of 'ora.scan1.vip' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.LISTENER_SCAN1.lsnr' on 'rac1'
CRS-2676: Start of 'ora.ASMNET1LSNR_ASM.lsnr' on 'rac1' succeeded
CRS-2676: Start of 'ora.ons' on 'rac1' succeeded
CRS-2676: Start of 'ora.LISTENER.lsnr' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'rac1'
CRS-2676: Start of 'ora.LISTENER_SCAN1.lsnr' on 'rac1' succeeded
CRS-2676: Start of 'ora.asm' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.proxy_advm' on 'rac1'
CRS-2676: Start of 'ora.proxy_advm' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.ora12c.db' on 'rac1'
CRS-2676: Start of 'ora.ora12c.db' on 'rac1' succeeded
CRS-6016: Resource auto-start has completed for server rac1
CRS-6024: Completed start of Oracle Cluster Ready Services-managed resources
CRS-4123: Oracle High Availability Services has been started.
--集群状态
[root@rac1 ~]# crsctl stat res -t
--------------------------------------------------------------------------------
Name Target State Server State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.DATA.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.LISTENER.lsnr
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.SYSDB_NEW.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.SYSDG.dg
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.net1.network
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.ons
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
ora.proxy_advm
ONLINE ONLINE rac1 STABLE
ONLINE ONLINE rac2 STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE rac1 STABLE
ora.LISTENER_SCAN2.lsnr
1 ONLINE ONLINE rac2 STABLE
ora.LISTENER_SCAN3.lsnr
1 ONLINE ONLINE rac2 STABLE
ora.MGMTLSNR
1 ONLINE ONLINE rac2 169.254.177.226 10.1
.1.104,STABLE
ora.asm
1 ONLINE ONLINE rac1 STABLE
2 ONLINE ONLINE rac2 STABLE
3 OFFLINE OFFLINE STABLE
ora.cvu
1 ONLINE ONLINE rac2 STABLE
ora.gns
1 ONLINE ONLINE rac2 STABLE
ora.gns.vip
1 ONLINE ONLINE rac2 STABLE
ora.mgmtdb
1 ONLINE ONLINE rac2 Open,STABLE
ora.oc4j
1 ONLINE ONLINE rac2 STABLE
ora.ora12c.db
1 ONLINE ONLINE rac1 Open,STABLE
2 ONLINE ONLINE rac2 Open,STABLE
ora.rac1.vip
1 ONLINE ONLINE rac1 STABLE
ora.rac2.vip
1 ONLINE ONLINE rac2 STABLE
ora.scan1.vip
1 ONLINE ONLINE rac1 STABLE
ora.scan2.vip
1 ONLINE ONLINE rac2 STABLE
ora.scan3.vip
1 ONLINE ONLINE rac2 STABLE
--------------------------------------------------------------------------------
--集群角色
[root@rac1 ~]# crsctl get node role config
Node 'rac1' configured role is 'hub'
[root@rac2 ~]# crsctl get node role config
Node 'rac2' configured role is 'hub'
这里实现了ORACLE 12C RAC的leaf和hub 角色相互转换,在转换的过程中需要转移确认集群和ASM均为flex mode,如果参考相关文档完成转换