ORA-27101 Shared memory realm does not exist

1.sqlplus user/password

在试图启动或连接数据库的时候 ,Oracle报告下列错误：

ERROR:

ORA-27101 Shared memory realm does not exist

ORA-01034 ORACLE not available

2.sqlplus /nolog

3.SQL> conn /as sysdba

ERROR:

ORA-28056: Writing audit records to Windows Event Log failed

OSD-1627319533: Message 1627319533 not found; product=RDBMS; facility=SOSD

O/S-Error: (OS 1502) ??????????????????

4.打开windows 事件查看器(win+R->eventvwr)，将应用程序日志清理一下，重新连接数据库，连接成功。

5.SQL>
conn /as sysdba

6.startup

参考：

http://kylinsoong.iteye.com/blog/776654

/article/4236291.html