Oracle RAC启动失败(DNS故障)

问题：

数据库启动报错：ORA-00119、ORA-00132等

环境：

DB:Oracle 11.2.0.4.0

OS:Redhat 6.5

问题现象：

启动数据库报错：

[grid@rac01 ~]$ srvctl start database -d cjcdb

PRCR-1079 : Failed to start resource ora.cjcdb.dbCRS-5017: The resource action "ora.cjcdb.db start" encountered the following error: ORA-00119: invalid specification for system parameter REMOTE_LISTENERORA-00132: syntax error or unresolved network name 'rac-scan.cjc.com:1521'. For details refer to "(:CLSN00107:)" in "/u01/app/11.2.0/grid/log/rac02/agent/crsd/oraagent_oracle/oraagent_oracle.log".CRS-5017: The resource action "ora.cjcdb.db start" encountered the following error: ORA-00119: invalid specification for system parameter REMOTE_LISTENERORA-00132: syntax error or unresolved network name 'rac-scan.cjc.com:1521'. For details refer to "(:CLSN00107:)" in "/u01/app/11.2.0/grid/log/rac01/agent/crsd/oraagent_oracle/oraagent_oracle.log".CRS-2674: Start of 'ora.cjcdb.db' on 'rac02' failedCRS-2674: Start of 'ora.cjcdb.db' on 'rac01' failedCRS-2632: There are no more servers to try to place resource 'ora.cjcdb.db' on that would satisfy its placement policy

其中remote_listener参数值为：rac-scan.cjc.com:1521

怀疑DNS解析SCAN失败

登录到rac01执行nslookup rac-scan.cjc.com

[root@rac01 bin]# nslookup rac-scan.cjc.com;; connection timed out; trying next origin;; connection timed out; no servers could be reached

查看resolv.conf配置信息被清空了，实际上每次服务器重启网卡resolv.conf配置都会被自动清空

[root@rac01 bin]# cat /etc/resolv.conf# Generated by NetworkManagernameserver 8.8.8.8

检查网卡配置文件里没有指定90的DNS，手动添加90DNS。

[root@rac02 bin]# cd /etc/sysconfig/network-scripts/[root@rac02 network-scripts]# vim ifcfg-eth0DNS1="192.168.31.90"

重新添加resolv.conf配置信息

[root@rac01 bin]# vim /etc/resolv.conf# Generated by NetworkManagernameserver 8.8.8.8domain  cjc.comnameserver 192.168.31.90options rotateoptions timeout:2options attempts:5

可以正常解析了

[root@rac01 bin]# nslookup rac-scan.cjc.comServer:192.168.31.90Address:192.168.31.90#53Name:rac-scan.cjc.comAddress: 192.168.31.60Name:rac-scan.cjc.comAddress: 192.168.31.70Name:rac-scan.cjc.comAddress: 192.168.31.50

启动数据

[root@rac01 bin]# ./srvctl start instance -d cjcdb -i cjcdb1[root@rac01 bin]# ./srvctl start instance -d cjcdb -i cjcdb2

检查实例状态

[root@rac01 bin]# ./srvctl status database -d cjcdbInstance cjcdb1 is running on node rac01Instance cjcdb2 is running on node rac02

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