Oracle11gR2安装RAC错误之--HOSTS文件错误系统环境:操作系统:RedHatEL5Cluster:OracleGI(GridInfrastructure)Oracle:Oracle11.2.0.1.0如图所示:RAC系统架构
Oracle 11gR2 安装RAC错误之--HOSTS文件错误
系统环境:
操作系统:RedHat EL5
Cluster: Oracle GI(Grid Infrastructure)
Oracle: Oracle 11.2.0.1.0
如图所示:RAC 系统架构
对于Oracle 11G构建RAC首先需要构建GI(Grid Infrastructure)的架构
错误现象:
节点2运行root.sh脚本错误:
[root@hk2 ~]# /u01/11.2.0/grid/root.sh
Running Oracle 11g root.sh script... The following environment variables are set as: ORACLE_OWNER= grid ORACLE_HOME= /u01/11.2.0/grid Enter the full pathname of the local bin directory: [/usr/local/bin]: Copying dbhome to /usr/local/bin ... Copying oraenv to /usr/local/bin ... Copying coraenv to /usr/local/bin ... Creating /etc/oratab file... Entries will be added to the /etc/oratab file as needed by Database Configuration Assistant when a database is created Finished running generic part of root.sh script. Now product-specific root actions will be performed. 2014-07-07 17:04:37: Parsing the host name 2014-07-07 17:04:37: Checking for super user privileges 2014-07-07 17:04:37: User has super user privileges Using configuration parameter file: /u01/11.2.0/grid/crs/install/crsconfig_params Creating trace directory LOCAL ADD MODE Creating OCR keys for user 'root', privgrp 'root'.. Operation successful. Adding daemon to inittab CRS-4123: Oracle High Availability Services has been started. ohasd is starting CRS-4402: The CSS daemon was started in exclusive mode but found an active CSS daemon on node hk1, number 1, and is terminating An active cluster was found during exclusive startup, restarting to join the cluster CRS-2672: Attempting to start 'ora.mdnsd' on 'hk2' CRS-2676: Start of 'ora.mdnsd' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.gipcd' on 'hk2' CRS-2676: Start of 'ora.gipcd' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.gpnpd' on 'hk2' CRS-2676: Start of 'ora.gpnpd' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.cssdmonitor' on 'hk2' CRS-2676: Start of 'ora.cssdmonitor' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.cssd' on 'hk2' CRS-2672: Attempting to start 'ora.diskmon' on 'hk2' CRS-2676: Start of 'ora.diskmon' on 'hk2' succeeded CRS-2676: Start of 'ora.cssd' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.ctssd' on 'hk2' CRS-2676: Start of 'ora.ctssd' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.drivers.acfs' on 'hk2' CRS-2676: Start of 'ora.drivers.acfs' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.asm' on 'hk2' CRS-2676: Start of 'ora.asm' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.crsd' on 'hk2' CRS-2676: Start of 'ora.crsd' on 'hk2' succeeded CRS-2672: Attempting to start 'ora.evmd' on 'hk2' CRS-2676: Start of 'ora.evmd' on 'hk2' succeeded Timed out waiting for the CRS stack to start.查看日志:
[root@hk2 crsd]# ls
core.12152 core.15934 core.16128 crsd.log crsdOUT.log crsd.trc
[root@hk2 crsd]# tail crsdOUT.log
Unable to resolve address for localhost:2016
ONS runtime exiting
Fatal error: eONS: eonsapi.c: Aug 4 2009 21:09:36
2014-07-07 17:55:31
Changing directory to /u01/11.2.0/grid/log/hk2/crsd
2014-07-07 17:55:31
CRSD REBOOT
Unable to resolve address for localhost:2016
ONS runtime exiting
Fatal error: eONS: eonsapi.c: Aug 4 2009 21:09:36
[root@hk2 crsd]# more crsdOUT.log
2014-07-07 17:08:23
Changing directory to /u01/11.2.0/grid/log/hk2/crsd
2014-07-07 17:08:23
CRSD REBOOT
Unable to resolve address for localhost:2016
ONS runtime exiting
Fatal error: eONS: eonsapi.c: Aug 4 2009 21:09:36
......
错误提示,无法解析localhost主机!
查看/etc/hosts文件:

oracle asm指的是“自动存储管理”,是一种卷管理器,可自动管理磁盘组并提供有效的数据冗余功能;它是做为单独的Oracle实例实施和部署。asm的优势:1、配置简单、可最大化推动数据库合并的存储资源利用;2、支持BIGFILE文件等。

方法:1、利用“select*from user_indexes where table_name=表名”语句查询表中索引;2、利用“select*from all_indexes where table_name=表名”语句查询所有索引。

在Oracle中,可利用lsnrctl命令查询端口号,该命令是Oracle的监听命令;在启动、关闭或重启oracle监听器之前可使用该命令检查oracle监听器的状态,语法为“lsnrctl status”,结果PORT后的内容就是端口号。

在oracle中,可以利用“TO_SINGLE_BYTE(String)”将全角转换为半角;“TO_SINGLE_BYTE”函数可以将参数中所有多字节字符都替换为等价的单字节字符,只有当数据库字符集同时包含多字节和单字节字符的时候有效。

在oracle中,可以利用“drop sequence sequence名”来删除sequence;sequence是自动增加数字序列的意思,也就是序列号,序列号自动增加不能重置,因此需要利用drop sequence语句来删除序列。

在oracle中,可以利用“select ... From all_tab_columns where table_name=upper('表名') AND owner=upper('数据库登录用户名');”语句查询数据库表的数据类型。

方法:1、利用“LOWER(字段值)”将字段转为小写,或者利用“UPPER(字段值)”将字段转为大写;2、利用“REGEXP_LIKE(字符串,正则表达式,'i')”,当参数设置为“i”时,说明进行匹配不区分大小写。

方法:1、利用“alter system set sessions=修改后的数值 scope=spfile”语句修改session参数;2、修改参数之后利用“shutdown immediate – startup”语句重启服务器即可生效。


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