系统：CentOS7.9
数据库：Oracle11.2.0.4
安装GI在运行脚本步骤时，节点1直接运行root.sh脚本，会出现如下报错：
Adding Clusterware entries to inittab
ohasd failed to start
Failed to start the Clusterware. Last 20 lines of the alert log
follow:
2022-01-07 00:14:00.117:
[client(39969)]CRS-2101:The OLR was formatted using version 3.
原因：CentOS7.9使用systemd而不是initd运行进程和重启进程，而root.sh是通过传统的initd运行ohasd进程，此为Linux 7安装11204版本，执行root.sh时存在的BUG.
以下为解决过程：
方案1：
在运行脚本root.sh前，在CentOS7.9 中ohasd设置一个服务：
# touch
/usr/lib/systemd/system/ohas.service
# chmod 777
/usr/lib/systemd/system/ohas.service
# vi
/usr/lib/systemd/system/ohas.service
添加以下内容：
[Unit]
Description=Oracle
High Availability Services
After=syslog.target
[Service]
ExecStart=/etc/init.d/init.ohasd
run >/dev/null 2>&1 Type=simple
Restart=always
[Install]
WantedBy=multi-user.target
# systemctl daemon-reload
# systemctl enable ohas.service
Created symlink from /etc/systemd/system/multi-user.target.wants/ohas.service
to /usr/lib/systemd/system/ohas.service.
# systemctl start ohas.service
# systemctl status ohas.service
● ohas.service - Oracle High
Availability Services
Loaded: loaded (/usr/lib/systemd/system/ohas.service; enabled; vendor
preset: disabled)
Active: failed (Result: start-limit) since Sat 2022-01-08 14:30:24 CST;
17s ago
Process: 19603 ExecStart=/etc/init.d/init.ohasd run >/dev/null
2>&1 Type=simple (code=exited, status=203/EXEC)
Main PID: 19603 (code=exited, status=203/EXEC)
Jan 08 14:30:24 hisdb1 systemd[1]:
Unit ohas.service entered failed state.
Jan 08 14:30:24 hisdb1 systemd[1]:
ohas.service failed.
Jan 08 14:30:24 hisdb1 systemd[1]:
ohas.service holdoff time over, scheduling restart.
Jan 08 14:30:24 hisdb1 systemd[1]:
Stopped Oracle High Availability Services.
Jan 08 14:30:24 hisdb1 systemd[1]:
start request repeated too quickly for ohas.service
Jan 08 14:30:24 hisdb1 systemd[1]:
Failed to start Oracle High Availability Services.
Jan 08 14:30:24 hisdb1 systemd[1]:
Unit ohas.service entered failed state.
Jan 08 14:30:24 hisdb1 systemd[1]:
ohas.service failed.
说明：此时状态为failed，原因是现在还没有/etc/init.d/init.ohasd文件.
解决：运行root.sh脚本，另外开启一个会话一直刷新/etc/init.d，直到出现init.ohasd文件，然后马上手动开启ohas.service服务，语句：systemctl
start ohas.service
# /u01/app/11.2.0/grid/root.sh
Performing root
user operation for Oracle 11g
The following
environment variables are set as:
ORACLE_OWNER= grid
ORACLE_HOME= /u01/app/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 script.
Now
product-specific root actions will be performed.
Using
configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_params
Creating trace directory
User ignored
Prerequisites during installation
Installing Trace
File Analyzer
OLR
initialization - 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
Clusterware entries to inittab
CRS-2672:
Attempting to start 'ora.mdnsd' on 'hisdb1'
CRS-2676: Start
of 'ora.mdnsd' on 'hisdb1' succeeded
CRS-2672:
Attempting to start 'ora.gpnpd' on 'hisdb1'
CRS-2676: Start
of 'ora.gpnpd' on 'hisdb1' succeeded
CRS-2672:
Attempting to start 'ora.cssdmonitor' on 'hisdb1'
CRS-2672:
Attempting to start 'ora.gipcd' on 'hisdb1'
CRS-2676: Start
of 'ora.cssdmonitor' on 'hisdb1' succeeded
CRS-2676: Start
of 'ora.gipcd' on 'hisdb1' succeeded
CRS-2672:
Attempting to start 'ora.cssd' on 'hisdb1'
CRS-2672:
Attempting to start 'ora.diskmon' on 'hisdb1'
CRS-2676: Start
of 'ora.diskmon' on 'hisdb1' succeeded
CRS-2676: Start
of 'ora.cssd' on 'hisdb1' succeeded
ASM created and
started successfully.
Disk Group
ocr_vote created successfully.
clscfg: -install
mode specified
Successfully
accumulated necessary OCR keys.
Creating OCR
keys for user 'root', privgrp 'root'..
Operation
successful.
CRS-4256:
Updating the profile
Successful
addition of voting disk 73fe02a30e3d4fa9bfab2df50c5a5f75.
Successfully
replaced voting disk group with +ocr_vote.
CRS-4256:
Updating the profile
CRS-4266: Voting
file(s) successfully replaced
## STATE
File Universal Id
File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE
73fe02a30e3d4fa9bfab2df50c5a5f75 (/dev/asm-diskb) [OCR_VOTE]
Located 1 voting
disk(s).
CRS-2672:
Attempting to start 'ora.asm' on 'hisdb1'
CRS-2676: Start
of 'ora.asm' on 'hisdb1' succeeded
CRS-2672:
Attempting to start 'ora.OCR_VOTE.dg' on 'hisdb1'
CRS-2676: Start
of 'ora.OCR_VOTE.dg' on 'hisdb1' succeeded
Configure Oracle
Grid Infrastructure for a Cluster ... succeeded
说明：节点1成功跑完root.sh脚本.
方案2：
在执行root.sh前安装补丁18370031修复
18370031补丁安装（双节点执行）
上传补丁包
p18370031_112040_Linux-x86-64.zip
解压补丁包
cd /soft
unzip -q p18370031_112040_Linux-x86-64.zip
授权补丁包
chown -R grid:oinstall /soft/18370031
在grid用户下安装补丁
opatch napply -oh $ORACLE_HOME -local /soft/18370031 –silent
开始执行root脚本（双节点执行）
root用户下执行
/u01/app/oraInventory/orainstRoot.sh
/u01/app/11.2.0/grid/root.sh
说明：推荐使用方案2解决此问题.
