关于linux下安装oracle之后，重启系统后oracle不能正常启动的配置总结

一、linux下无法启动sqlplus

问题描述：

[root@localhost oracle]# su - oracle
[oracle@localhost oracle]$ sqlplus "as/sysdba"
-bash: sqlplus: command not found
[oracle@localhost oracle]$ /u01/app/oracle/oracle/product/11.1.0/db_1/bin/sqlplus
Error 6 initializing SQL*Plus
Message file sp1.msb not found
SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory
[oracle@localhost oracle]$
解决方法：

 

由于环境变量没有设置导致的。可以编辑.profile文件可以进行环境变量设置的。

打开/etc/profile底部插入

 

export ORACLE_SID=demo1(数据库实例id)

export ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1

export PATH=$PATH:$ORACLE_HOME/bin

保存关闭,重启系统或执行source /ect/profile设置立即生效。

二、启动数据库实例，分为两步：第一步，启动监听；第二步，启动数据库实例。

1.进入到sqlplus启动实例
[oracle@redhat ~]$ su - oracle                                 --“切换到oracle用户”
Password:
[oracle@redhat ~]$ lsnrctl start                               --“打开监听”
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 14-OCT-2009 19:06:40
Copyright (c) 1991, 2005, Oracle.  All rights reserved.
Starting /home/oracle/product/10g/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /home/oracle/product/10g/network/admin/listener.ora
Log messages written to /home/oracle/product/10g/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC2)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=redhat)(PORT=1522)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC2)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date                14-OCT-2009 19:06:40
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/product/10g/network/admin/listener.ora
Listener Log File         /home/oracle/product/10g/network/log/listener.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC2)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=redhat)(PORT=1522)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
[oracle@redhat ~]$ sqlplus /nolog                                --“进入到sqlplus”
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Oct 14 19:06:45 2009
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> conn /as sysdba