oracle启动问题一般解决方法

oracle启动问题
一：数据库没有启动
#sqlplus /nolog
sql>connect /as sysdba
sql>startup
 
二：监听出问题
登录DB服务器
使用lsnrctl start/stop开启/关闭监听
使用lsnrctl status查看状态
理应为：
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ERPAP)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 10.2.0.3.0 - Production
Start Date                13-5月 -2010 03:54:14
Uptime                    0 days 5 hr. 49 min. 53 sec
Process ID                4255
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u2/oracle/10g/network/admin/listener.ora
Listener Log File         /u2/oracle/10g/network/log/listener.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ERPAP)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "topprod" has 1 instance(s).
  Instance "topprod", status READY, has 1 handler(s) for this s