11.2.0.1 RAC环境经典bug CRS-4124: Oracle High Availability Services startup failed.

今天在做RAC集群环境，安装grid软件执行/u01/app/11.2.0.1/grid/root.sh脚本时出现如下错误提示

 Running Oracle 11g root.sh script...


The following environment variables are set as:

    ORACLE_OWNER= grid

    ORACLE_HOME=  /u01/app/11.2.0.1/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.

2021-03-01 10:46:10: Parsing the host name

2021-03-01 10:46:10: Checking for super user privileges

2021-03-01 10:46:10: User has super user privileges

Using configuration parameter file: /u01/app/11.2.0.1/grid/crs/install/crsconfig_params

Creating trace directory

LOCAL ADD MODE 

Creating OCR keys for user 'root', privgrp 'root'..

Operation successful.

  root wallet

  root wallet cert

  root cert export

  peer wallet

  profile reader wallet

  pa wallet

  peer wallet keys

  pa wallet keys

  peer cert request

  pa cert request

  peer cert

  pa cert

  peer root cert TP

  profile reader root cert TP

  pa root cert TP

  peer pa cert TP

  pa peer cert TP

  profile reader pa cert TP

  profile reader peer cert TP

  peer user cert

  pa user cert

Adding daemon to inittab

CRS-4124: Oracle High Availability Services startup failed.

CRS-4000: Command Start failed, or completed with errors.

ohasd failed to start: Inappropriate ioctl for device

ohasd failed to start at /u01/app/11.2.0.1/grid/crs/install/rootcrs.pl line 443. 

于是就上网查询资料，才发现这是11.2.0.1 RAC环境的经典bug。解决方法也很简单，也就是在执行脚本时出现了 Adding daemon to inittab，然后另开一个窗口执行。

/bin/dd if=/var/tmp/.oracle/npohasd of=/dev/null bs=1024 count=1

当然，窗口可以提前开好，当运行脚本出现 Adding daemon to inittab 立马切换窗口去执行dd那条命令。

注意：重新执行脚本需要删除之前的配置，命令如下。

/u01/app/11.2.0.1/grid/crs/install/roothas.pl -deconfig -force -verbose

在这里，我个人建议还是一切重头开始，因为删除了之前配置。装好了环境后面也遇到了各种问题。还不如一开始就避免这个问题。

另外，装好了RAC环境后。如若你需要重新启动RAC环境，那么你也需要另外开一个窗口来执行这条命令，最好是在执行crsctl start crs 之前执行dd 命令。

/bin/dd if=/var/tmp/.oracle/npohasd of=/dev/null bs=1024 count=1

资料中提到还有另外的解决办法，就是更改/var/tmp/.oracle/npohasd文件的权限，我是两个都做了。影响是没有，反正环境目前是可以正常启停

chown root:oinstall /var/tmp/.oracle/npohasd

参考资料