解决ORACLE 11g rac(11.2.0.1) 生产库scanip无法使用的故障
SCANIP是ORACLE11G数据库的新特性,使用它可以简化客户端的vip配置,本单位去年搭建ORACLE11RAC环境时,由于搭建仓促,未对SCANIP进行测试,今年由于业务需要,
SCANIP是ORACLE11G数据库的新特性,香港服务器,使用它可以简化客户端的vip配置,本单位去年搭建ORACLE11 RAC环境时,由于搭建仓促,未对SCANIP进行测试,今年由于业务需要,需在多台客户端配置SCANIP时,发现SCANIP无法使用,报错截图如下:
随后在google中搜索解决,但也遇到点问题,特将解决步骤写下:
测试SCANIP地址
tnsping test
没有问题。
测试端口
telnet 172.16.5.40 1521
正常。
查看linux服务器hosts配置:
cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
# Public Network
172.16.5.30 test1
172.16.5.31 test2
172.16.5.32 test3
# Private Network
20.20.20.1 test1-priv
20.20.20.2 test2-priv
20.20.20.3 test3-priv
# Public Virtual IP
172.16.5.35 test1-vip
172.16.5.36 test2-vip
172.16.5.37 test3-vip
# Single Client Access Name (SCAN)
172.16.5.40 tscanip
用集群命令检查SCANIP状态:
srvctl status scan
SCAN VIP scan1 is enabled
SCAN VIP scan1 is running on node test1
查看初始化参数文件
show parameter local_listener
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
local_listener string (DESCRIPTION=(ADDRESS_LIST=(AD
DRESS=(PROTOCOL=TCP)(HOST=test
1-vip)(PORT=1521))))
在这里需修改local_listener参数,实现SCANIP地址的注册
修改前先备份初始化参数
create pfile='/home/oracle/bak/spfilebak_20130523_scanip.ora' from spfile;
修改local_listener参数
alter system set local_listener='(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.5.35)(PORT=1521))))' scope=both sid='test1';
用命令是修改的值直接生效。
alter system register;
第二个节点修改方法和第一个节点的方法一致。分别测试SCANIP和VIP的连接都没有问题,任务完成。
注:这里需注意的是HOST主机参数为vip的ip地址,不是scanip的地址,如果填写的是scanip地址的话,美国服务器,则修改完参数后,scanip能够正常使用,但如果有客户端配置使用vip的话,则会出现下图所示错误。
只有分别修改两个节点的local_listener参数为两个节点的vip的ip地址,虚拟主机,才能够使scanip和vip地址同时生效!!!
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