oracle 10g的启动与关闭

1,以oracle用户登录,用sqlplus启动数据库 bash-3.00# su oracle   $ bash bash-3.00$ sqlplus /nolog SQL*Plus: Release 10.2.0.1.0 - Production on Mon Nov 6 10:55:45 2006 Copyright (c) 1982, 2005, Oracle. All rights reserved. SQL> connect / as sysdba Connected. SQL> startup ORACLE instance started. Total System Global Area 205520896 bytes Fixed Size          778392 bytes Variable Size       74456936 bytes Database Buffers     130023424 bytes Redo Buffers         262144 bytes Database mounted. Database opened. SQL> 出现如下显示，表示Oracle已经成功启动 ORACLE instance started. Total System Global Area 205520896 bytes Fixed Size          778392 bytes Variable Size       74456936 bytes Database Buffers     130023424 bytes Redo Buffers         262144 bytes Database mounted. Database opened. 2.用sqlplus停止数据库 bash-3.00# su oracle   $ bash bash-3.00$ sqlplus /nolog SQL*Plus: Release 10.2.0.1.0 - Production on Mon Nov 6 10:55:45 2006 Copyright (c) 1982, 2005, Oracle. All rights reserved. SQL> connect / as sysdba Connected. SQL> shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. 注：shutdown可加关闭选项,从最温和到最粗暴的行为选项为(shutdown、shutdown transactional、shutdown immediate、shutdown abort) 命令解释如下 shutdown:关闭，等待每个用户退出系统戓被取消后退出关闭数据库。 shutdown transactional:事务性关闭，等待每个用户提交戓回退当前的事务，然后oracle取消对话，在所有用户退出系统后执行关闭。 shutdown immediate:直接关闭，取消所有用户对话（促使回退），执行正常的关闭程序。 shutdown abort:终止关闭，关闭数据库时没有自动检查点戓日志开关。 出现如下显示,表示oracle已经停止 Database closed. Database dismounted. ORACLE instance shut down.