oracle 9i 最近发现登陆报错 - Oracle / 基础和管理

用PL/SQL 登陆时弹出报错窗口，错误如下！
  ORA-01034:ORACLE not available
  ORA-27101:shared memory realm does not exist


请问，有没有人遇到这种情况，怎么解决？谢谢！

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1. Oracle sid 正确？
2. Oracle home 正确？
3. 检查下数据库的状态。 是否运行正常。




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ORA-01034: ORACLE not available 
Cause: Oracle was not started up. Possible causes include the following: 
- The SGA requires more space than was allocated for it.

- The operating-system variable pointing to the instance is improperly defined.

Action: Refer to accompanying messages for possible causes and correct the problem mentioned in the other messages. If Oracle has been initialized, then on some operating systems, verify that Oracle was linked correctly. See the platform specific Oracle documentation.

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ORA-27101: shared memory realm does not exist 
Cause: Unable to locate shared memory realm
Action: Verify that the realm is accessible

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引用

看一下你的安装目录DATABASE 下面的 ORADIM.LOG 文件
如果