查看Oracle数据库是否安装成功
sqlplus /nolog
SQL>conn / as sysdba
Connected to an Idle instance(表明成功)
SQL>startup
如何查看Oracle的启动状态
sqlplus /nolog
conn / as sysdba
SQL> select status from v$instance
ORA-01034: ORACLE not available ------------shutdown
SQL> startup nomount ------------started
SQL> alter database mount ------------mounted
SQL> alter database open ------------open