SQL>startup mount
检查是否连接oracle
SQL>select sysdate from dual;
Sp2-0640:Not connected
挂起
SQL>startup
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如果出现错误信息：
ORA-01078:failucr in processing system parameters
LRM-00109:could not open parametet file/opt/ora9/product/9.2/dbs/initora9i.or
执行：
#cp /opt/ora9/admin/orcl/pfile/init.ora.613200412101 /opt/ora9/product/9.2/dbs/initora9.ora
