linux下oracle 数据库的启动和关闭

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一、启动
    三个命令：
    1、sqlplux /nolog
    2、connect /as sysdba
    3、startup
    二、关闭
    1、shutdown immediate;
    [oracle@zhao ~]$ sqlplus /nolog
    SQL*Plus: Release 9.2.0.4.0 - Production on Sun Nov 1 15:08:40 2009
    Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
    SQL> connect /as sysdba
    Connected to an idle instance.
    SQL> startup
    ORACLE instance started.
    Total System Global Area 236000356 bytes
    Fixed Size 451684 bytes
    Variable Size 201326592 bytes
    Database Buffers 33554432 bytes
    Redo Buffers 667648 bytes
    Database mounted.
    Database opened.
    SQL>
    惊叹号在 SQL> ！ 回车可以退出 sql命令行
    查看oracle数据库运行启动的进程
    SQL> !
    [oracle@zhao ~]$ ps -ef | grep oracle
    root 4268 4235 0 15:08 pts/0 00:00:00 su - oracle
    oracle 4269 4268 0 15:08 pts/0 00:00:00 -bash
    oracle 4299 4269 0 15:08 pts/0 00:00:00 sqlplus
    oracle    4302     1  0 15:09 ?        00:00:00 ora_pmon_lx92
    oracle    4304     1  0 15:09 ?        00:00:00 ora_dbw0_lx92
    oracle    4306     1  0 15:09 ?        00:00:00 ora_lgwr_lx92
    oracle    4308     1  0 1