Oracle数据库的启动与停止

oracle linux下开启与关闭
 1、启动ORACLE监听
首先要登录用户oracle：su - oracle
oracle@localhost bin]$ lsnrctl       --启动oracle监听命令
 LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 29-OCT-2010 19:36:02
 Copyright (c) 1991, 2005, Oracle. All rights reserved.
 Welcome to LSNRCTL, type "help" for information
LSNRCTL>start
。。。。。。。。
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
启动成功

2.开户数据库
[oracle@localhost bin]$ sqlplus /nolog

SQL> conn / as sysdba;
Connected to an idle instance.

SQL> startup
ORACLE instance started.
Total System Global Area 2147483648 bytes
Fixed Size                  1220432 bytes
Variable Size             335544496 bytes
Database Buffers         1795162112 bytes
Redo Buffers               15556608 bytes
Database mounted.
Database opened.
（至此数据库启动,可以通过PL/SQL登录数据库进行操作了）

3.关闭ORCLAE   
先关闭ORACLE数据库：如果要关闭数据库，可在sqlplus中执行shutdown命令，如下所示。
SQL> shutdown immediate                     //关闭数据库  
  Database closed. 
  Database dismounted.  
  ORACLE instance shut down. 
再关闭监听程序：
oracle@localhost bin]$ lsnrctl stop      --关闭oracle监听命令
LSNRCTL for Linux: Version 11.1.0.6.0 - Production on 29-OCT-2008 14:39:31  Copyright (c) 1991, 2007, Oracle.  All rights reserved.  Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=demoserver)(PORT=  1521)))  The command completed successfully                 //关闭成功