来自官方文档：（1）Can I change the public hostname in my Oracle Database 10g Cluster using Oracle Clusterware?
Hostname changes are not supported in Oracle Clusterware (CRS), unless you want to perform a deletenode followed by a new addnode operation.
The hostname is used to store among other things the flag files and Oracle Clusterware stack will not start if hostname is changed.
（2）Does the hostname have to match the public name or can it be anything else?
When there is no vendor clusterware, only Oracle Clusterware, then the public node name must match the host name. When vendor clusterware is present, it determines the public node names, and the installer doesn't present an opportunity to change them. So, when you have a choice, always choose the hostname.
From： Metalink Note 220970.1 RAC Frequently Asked Questions:
（1）. RAC 环境一旦安装好后， 主机名就不能修改，除非先删除节点，修改Hostname， 在添加节点。
（2）. 主机名必须和public 名一致。这一点在安装文档中有特别强调。
大神博客链接：http://blog.csdn.net/tianlesoftware/article/details/6055612
由于之前的安装失误，将/etc/hosts文件配置成如下格式
#管理网段 30.11.3.178 rappdb1 30.11.3.179 rappdb2 #public IP 30.2.21.161 rappdb1-pub 30.2.21.163 rappdb2-pub 30.2.21.162 rappdb1-vip 30.2.21.163 rappdb2-vip 172.2.21.101 rappdb1-priv 172.2.21.102 rappdb2-priv
当安装完成后，监听中发现监听的是 管理IP（30.11.3.178）和VIP（30.2.21.162），正常应该是监听PublicIP和VIP。一般不建议直接修改hosts文件。
修复操作如下：
一、先卸载CRS
在非最后一个节点运行
/oracle/asm/crs/install/rootcrs.pl -verbose -deconfig -force Using configuration parameter file: /oracle/asm/crs/install/crsconfig_params Network exists: 1/8.8.6.0/255.255.255.0/en0, type static VIP exists: /dbrac1-vip/8.8.6.11/8.8.6.0/255.255.255.0/en0, hosting node dbrac1 VIP exists: /dbrac2-vip/8.8.6.21/8.8.6.0/255.255.255.0/en0, hosting node dbrac2 GSD exists ONS exists: Local port 6100, remote port 6200, EM port 2016 CRS-2673: Attempting to stop 'ora.registry.acfs' on 'dbrac1' CRS-2677: Stop of 'ora.registry.acfs' on 'dbrac1' succeeded CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'dbrac1' CRS-2673: Attempting to stop 'ora.crsd' on 'dbrac1' CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on 'dbrac1' CRS-2673: Attempting to stop 'ora.oc4j' on 'dbrac1' CRS-2673: Attempting to stop 'ora.ASMCRS.dg' on 'dbrac1' CRS-2673: Attempting to stop 'ora.racdb.db' on 'dbrac1' CRS-2677: Stop of 'ora.racdb.db' on 'dbrac1' succeeded CRS-2673: Attempting to stop 'ora.ASMVG1.dg' on 'dbrac1' CRS-2677: Stop of 'ora.ASMVG1.dg' on 'dbrac1' succeeded CRS-2677: Stop of 'ora.oc4j' on 'dbrac1' succeeded CRS-2672: Attempting to start 'ora.oc4j' on 'dbrac2' CRS-2676: Start of 'ora.oc4j' on 'dbrac2' succeeded CRS-2677: Stop of 'ora.ASMCRS.dg' on 'dbrac1' succeeded CRS-2673: Attempting to stop 'ora.asm' on 'dbrac1' CRS-2677: Stop of 'ora.asm' on 'dbrac1' succeeded CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'dbrac1' has completed CRS-2677: Stop of 'ora.crsd' on 'dbrac1' succeeded CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'dbrac1' CRS-2673: Attempting to stop 'ora.crf' on 'dbrac1' CRS-2673: Attempting to stop 'ora.ctssd' on 'dbrac1' CRS-2673: Attempting to stop 'ora.evmd' on 'dbrac1' CRS-2673: Attempting to stop 'ora.asm' on 'dbrac1' CRS-2673: Attempting to stop 'ora.mdnsd' on 'dbrac1' CRS-2677: Stop of 'ora.crf' on 'dbrac1' succeeded CRS-2677: Stop of 'ora.ctssd' on 'dbrac1' succeeded CRS-2677: Stop of 'ora.evmd' on 'dbrac1' succeeded CRS-2677: Stop of 'ora.mdnsd' on 'dbrac1' succeeded CRS-2677: Stop of 'ora.drivers.acfs' on 'dbrac1' succeeded CRS-2677: Stop of 'ora.asm' on 'dbrac1' succeeded CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'dbrac1' CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'dbrac1' succeeded CRS-2673: Attempting to stop 'ora.cssd' on 'dbrac1' CRS-2677: Stop of 'ora.cssd' on 'dbrac1' succeeded CRS-2673: Attempting to stop 'ora.gipcd' on 'dbrac1' CRS-2677: Stop of 'ora.gipcd' on 'dbrac1' succeeded CRS-2673: Attempting to stop 'ora.gpnpd' on 'dbrac1' CRS-2677: Stop of 'ora.gpnpd' on 'dbrac1' succeeded CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'dbrac1' has completed CRS-4133: Oracle High Availability Services has been stopped. This may take several minutes. Please wait ... 0518-307 odmdelete: 1 objects deleted. 0518-307 odmdelete: 1 objects deleted. 0518-307 odmdelete: 1 objects deleted. Successfully deconfigured Oracle clusterware stack on this node
在最后一个节点运行
/oracle/asm/crs/install/rootcrs.pl -verbose -deconfig -force -lastnode Using configuration parameter file: /oracle/asm/crs/install/crsconfig_params CRS resources for listeners are still configured Network exists: 1/8.8.6.0/255.255.255.0/en0, type static VIP exists: /dbrac2-vip/8.8.6.21/8.8.6.0/255.255.255.0/en0, hosting node dbrac2 GSD exists ONS exists: Local port 6100, remote port 6200, EM port 2016 CRS-2673: Attempting to stop 'ora.registry.acfs' on 'dbrac2' CRS-2677: Stop of 'ora.registry.acfs' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.crsd' on 'dbrac2' CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on 'dbrac2' CRS-2673: Attempting to stop 'ora.oc4j' on 'dbrac2' CRS-2673: Attempting to stop 'ora.ASMCRS.dg' on 'dbrac2' CRS-2673: Attempting to stop 'ora.racdb.db' on 'dbrac2' CRS-2677: Stop of 'ora.racdb.db' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.ASMVG1.dg' on 'dbrac2' CRS-2677: Stop of 'ora.ASMVG1.dg' on 'dbrac2' succeeded CRS-2677: Stop of 'ora.oc4j' on 'dbrac2' succeeded CRS-2677: Stop of 'ora.ASMCRS.dg' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.asm' on 'dbrac2' CRS-2677: Stop of 'ora.asm' on 'dbrac2' succeeded CRS-2792: Shutdown of Cluster Ready Services-managed resources on 'dbrac2' has completed CRS-2677: Stop of 'ora.crsd' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.ctssd' on 'dbrac2' CRS-2673: Attempting to stop 'ora.evmd' on 'dbrac2' CRS-2673: Attempting to stop 'ora.asm' on 'dbrac2' CRS-2677: Stop of 'ora.evmd' on 'dbrac2' succeeded CRS-2677: Stop of 'ora.ctssd' on 'dbrac2' succeeded CRS-2677: Stop of 'ora.asm' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'dbrac2' CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.cssd' on 'dbrac2' CRS-2677: Stop of 'ora.cssd' on 'dbrac2' succeeded CRS-2672: Attempting to start 'ora.cssdmonitor' on 'dbrac2' CRS-2676: Start of 'ora.cssdmonitor' on 'dbrac2' succeeded CRS-2672: Attempting to start 'ora.cssd' on 'dbrac2' CRS-2672: Attempting to start 'ora.diskmon' on 'dbrac2' CRS-2676: Start of 'ora.diskmon' on 'dbrac2' succeeded CRS-2676: Start of 'ora.cssd' on 'dbrac2' succeeded CRS-4611: Successful deletion of voting disk +ASMCRS. ASM de-configuration trace file location: /tmp/asmcadc_clean2012-11-20_10-05-15-AM.log ASM Clean Configuration START ASM Clean Configuration END ASM with SID +ASM1 deleted successfully. Check /tmp/asmcadc_clean2012-11-20_10-05-15-AM.log for details. CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'dbrac2' CRS-2673: Attempting to stop 'ora.mdnsd' on 'dbrac2' CRS-2673: Attempting to stop 'ora.crf' on 'dbrac2' CRS-2673: Attempting to stop 'ora.ctssd' on 'dbrac2' CRS-2673: Attempting to stop 'ora.asm' on 'dbrac2' CRS-2677: Stop of 'ora.mdnsd' on 'dbrac2' succeeded CRS-2677: Stop of 'ora.crf' on 'dbrac2' succeeded CRS-2677: Stop of 'ora.asm' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.cluster_interconnect.haip' on 'dbrac2' CRS-2677: Stop of 'ora.ctssd' on 'dbrac2' succeeded CRS-2677: Stop of 'ora.cluster_interconnect.haip' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.cssd' on 'dbrac2' CRS-2677: Stop of 'ora.cssd' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.gipcd' on 'dbrac2' CRS-2677: Stop of 'ora.gipcd' on 'dbrac2' succeeded CRS-2673: Attempting to stop 'ora.gpnpd' on 'dbrac2' CRS-2677: Stop of 'ora.gpnpd' on 'dbrac2' succeeded CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'dbrac2' has completed CRS-4133: Oracle High Availability Services has been stopped. This may take several minutes. Please wait ... 0518-307 odmdelete: 1 objects deleted. 0518-307 odmdelete: 1 objects deleted. 0518-307 odmdelete: 1 objects deleted. Successfully deconfigured Oracle clusterware stack on this node
二、修改主机名 （本案例不涉及修改主机名）
smitty tcpip修改主机名
第一节点：dbrac1修改为dbrac100
第一节点：dbrac2修改为dbrac200
三、修改/etc/hosts
#管理网段 #30.11.3.178 rappdb1 #30.11.3.179 rappdb2 #public IP 30.2.21.161 rappdb1 30.2.21.163 rappdb2 30.2.21.162 rappdb1-vip 30.2.21.163 rappdb2-vip 172.2.21.101 rappdb1-priv 172.2.21.102 rappdb2-priv
四、修改11g grid的参数文件
修改$ORACLE_HOME/crs/install/crsconfig_params中相关部分：
ORACLE_HOME=/oracle/asm ORACLE_BASE=/oracle/grid OLD_CRS_HOME= JREDIR=/oracle/asm/jdk/jre/ JLIBDIR=/oracle/asm/jlib VNDR_CLUSTER=false OCR_LOCATIONS=NO_VAL CLUSTER_NAME=dbrac-cluster HOST_NAME_LIST=dbrac100,dbrac200 NODE_NAME_LIST=dbrac100,dbrac200 PRIVATE_NAME_LIST= VOTING_DISKS=NO_VAL #VF_DISCOVERY_STRING=%s_vfdiscoverystring% ASM_UPGRADE=false ASM_SPFILE= ASM_DISK_GROUP=ASMCRS ASM_DISCOVERY_STRING= ASM_DISKS=/dev/rhdisk3 ASM_REDUNDANCY=EXTERNAL CRS_STORAGE_OPTION=1 CSS_LEASEDURATION=400 CRS_NODEVIPS="dbrac100-vip/255.255.255.0/en0,dbrac200-vip/255.255.255.0/en0" NODELIST=dbrac100,dbrac200 NETWORKS="en0"/8.8.6.0:public,"en1"/7.7.9.0:cluster_interconnect SCAN_NAME=dbrac-scan SCAN_PORT=1521 GPNP_PA= OCFS_CONFIG= # GNS consts GNS_CONF=false GNS_ADDR_LIST= GNS_DOMAIN_LIST= GNS_ALLOW_NET_LIST= GNS_DENY_NET_LIST= GNS_DENY_ITF_LIST= #### Required by OUI add node NEW_HOST_NAME_LIST= NEW_NODE_NAME_LIST= NEW_PRIVATE_NAME_LIST= NEW_NODEVIPS="dbrac100-vip/255.255.255.0/en0,dbrac200-vip/255.255.255.0/en0" ############### OCR constants # GPNPCONFIGDIR is handled differently in dev (T_HAS_WORK for all) # GPNPGCONFIGDIR in dev expands to T_HAS_WORK_GLOBAL GPNPCONFIGDIR=$ORACLE_HOME GPNPGCONFIGDIR=$ORACLE_HOME OCRLOC= OLRLOC= OCRID= CLUSTER_GUID= CLSCFG_MISSCOUNT= #### IPD/OS CRFHOME="/oracle/asm"
注：10g RAC的参数配置文件： $ORA_CRS_HOME/install/rootconfig
五、在各个节点依次运行root.sh脚本
节点1运行root.sh
另外一个节点运行root.sh
六、注册信息
1.grid用户asmca命令加载ASMVG1
2.oracle用户注册集群信息
./srvctl add database -d racdb -o /oracle/db/product/11.2
./srvctl add instance -d racdb -i racdb1 -n dbrac100
./srvctl add instance -d racdb -i racdb2 -n dbrac200
root用户
./srvctl add scan -n dbrac-scan -S 8.8.6.0/255.255.255.0
3.grid用户netca注册监听
七、完成检查状态
$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.ASMCRS.dg ora....up.type ONLINE ONLINE dbrac100
ora.ASMVG1.dg ora....up.type ONLINE ONLINE dbrac100
ora....ER.lsnr ora....er.type ONLINE ONLINE dbrac100
ora.asm ora.asm.type ONLINE ONLINE dbrac100
ora....SM1.asm application ONLINE ONLINE dbrac100
ora....00.lsnr application ONLINE ONLINE dbrac100
ora....100.gsd application OFFLINE OFFLINE
ora....100.ons application ONLINE ONLINE dbrac100
ora....100.vip ora....t1.type ONLINE ONLINE dbrac100
ora....SM2.asm application ONLINE ONLINE dbrac200
ora....00.lsnr application ONLINE ONLINE dbrac200
ora....200.gsd application OFFLINE OFFLINE
ora....200.ons application ONLINE ONLINE dbrac200
ora....200.vip ora....t1.type ONLINE ONLINE dbrac200
ora.gsd ora.gsd.type OFFLINE OFFLINE
ora....network ora....rk.type ONLINE ONLINE dbrac100
ora.ons ora.ons.type ONLINE ONLINE dbrac100
ora.racdb.db ora....se.type ONLINE ONLINE dbrac100
ora.scan1.vip ora....ip.type ONLINE ONLINE dbrac100
来源：https://www.cnblogs.com/51linux/p/4762873.html