linux 启动oracle<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

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。
 
一、如何启动数据库实例
   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 <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />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                                              --“
连接到
sysdba”
Connected to an idle instance.
SQL> startup                                                     --“
启动数据库实例
ORACLE instance started.
Total System Global Area  285212672 bytes
Fixed Size      1218968 bytes
Variable Size     88082024 bytes
Database Buffers   188743680 bytes
Redo Buffers      7168000 bytes
Database mounted.
Database opened.
SQL> shutdown immediate                                          --“
关闭数据库实例
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
[oracle@redhat ~]$ lsnrctl stop                                 --“
关闭监听
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 14-OCT-2009 19:08:06
Copyright (c) 1991, 2005, Oracle.  All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC2)))
The command completed successfully
 
   2.
dbstartdbshut启动和关闭数据库实例
 
先启动监听 lsnrctl start
启动实例
  dbstart
 
使用dbstart命令启动数据库比较方便,但是在linux上安装好oracle之后,第一次使用dbstart命令可能会报如下错误:
 
ORACLE_HOME_LISTNER is not SET, unable to auto-start Oracle Net Listener
Usage: /u01/app/oracle/oracle/product/10.2.0/db_1/bin/dbstart ORACLE_HOME

原因:
dbstart
dbshut脚本文件中ORACLE_HOME_LISTNER的设置有问题,分别打开两个文件找到:用vi编辑dbstartORACLE_HOME_LISTNER=$1,修改为
ORACLE_HOME_LISTNER=$ORACLE_HOME
 
 
然后保存退出,此时再运行dbstart,已经不报错了,但是没有任何反应,ps一下进程,没有oracle的进程,说明oracle实例没有正常启动。
 
此时的原因是在/etc/oratab的设置问题,我们vi一下,发现
zgz:/home/oracle/product/10g:N
最后设置的是"N"(我的环境中只有一个实例,因此只有一行配置语句),我们需要把“N”修改为“Y”
 
以上的工作做好之后,dbstart就可以正常使用了:
 
[oracle@redhat bin]$ lsnrctl start                                   --“
启动监听
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 14-OCT-2009 19:44:53
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 19:44:53
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 bin]$ dbstart                                   --“
启动数据库实例
Processing Database instance "zgz": log file /home/oracle/product/10g/startup.log
[oracle@redhat bin]$ dbshut                                    --“
关闭数据库实例
[oracle@redhat bin]$ lsnrctl stop                              --“
关闭监听
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 14-OCT-2009 19:45:33
Copyright (c) 1991, 2005, Oracle.  All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC2)))
The command completed successfully
 
二、如何使数据库实例和linux系统一起启动
/etc/rc.d/rc.local中加入如下语句即可实现同系统启动实例:
su - oracle -c "lsnrctl start"
su - oracle -c "dbstart"