SQL> startup
ERROR at line 1:
ORA-01092: ORACLE instance terminated. Disconnection forced
alert
Errors in file /oracle/admin/mydb2/udump/mydb2_ora_5811.trc:
ORA-00704: bootstrap process failure
ORA-39700: database must be opened with UPGRADE option
Mon Mar 2 06:11:29 2009
Error 704 happened during db open, shutting down database
USER: terminating instance due to error 704
Instance terminated by USER, pid = 5811
ORA-1092 signalled during: alter database open…
解决方法：
SQL> startup upgrade
重建数据字典表
SQL> @?/rdbms/admin/catupgrd.sql
编译失效对象
SQL>@?/rdbms/admin/utlrp.sql
SQL>@?/rdbms/admin/catalog.sql
SQL>shutdown immediate
SQL>startup
数据库启动成功