11.2.0.3for RHEL5.6
[oracle@lxasm ~]$ sqlplus system/qazwsx@lxasmorc1 SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 19 01:21:47 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. ERROR: ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist Linux-x86_64 Error: 2: No such file or directory Process ID: 0 Session ID: 0 Serial number: 0
明明信息已经注册到监听上去了，以及数据库也是启动了的
--用本地认证登录进行验证是否启动数据库
[oracle@lxasm ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 19 01:22:33 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP, Data Mining and Real Application Testing options SQL>
查看参数：
SQL> show parameter name NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ O7_DICTIONARY_ACCESSIBILITY boolean FALSE awr_snapshot_time_offset integer 0 control_management_pack_access string DIAGNOSTIC+TUNING cursor_bind_capture_destination string memory+disk db_file_name_convert string db_name string lxasmorc db_unique_name string lxasmorcl enable_ddl_logging boolean FALSE global_names boolean FALSE instance_name string lxasmorc1 java_jit_enabled boolean TRUE service_names string lxasmorcl
通过检查发现，instance_name和service_names不一样 一个是L（小写）一个是1
现在是instance lxasmorc1
所以注册上去后，通过@lxasmorc1这种方式连接 会去查找 lxasmorc1 Service name,然而这里服务名是 lxasmorcl (L)
所以判断认为实例没有启动 解决方案：
现在是instance lxasmorc1
所以注册上去后，通过@lxasmorc1这种方式连接 会去查找 lxasmorc1 Service name,然而这里服务名是 lxasmorcl (L)
所以判断认为实例没有启动 解决方案：
创建pfile并关闭数据库
[oracle@lxasm dbs]$ export ORACLE_SID=lxasmorc1 (这里只是说明一下，依然是1SID,如果你没更改，可不export） [oracle@lxasm ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 19 01:22:33 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP, Data Mining and Real Application Testing options SQL>create pfile from spfile; SQL>shutdown immediate;
将pfile改名后尝试启动
[oracle@lxasm dbs]$ cp initlxasmorc1.ora initlxasmorcl.ora [oracle@lxasm dbs]$ export ORACLE_SID=lxasmorcl [oracle@lxasm dbs]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 19 01:26:05 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to an idle instance. SQL> startup ORA-29760: instance_number parameter not specified
这时候报这个错。继续修复修改pfile中的instance_number参数
[oracle@lxasm dbs]$ vi initlxasmorcl.ora 修改pfile中的 lxasmorc1.instance_number=1 变为 lxasmorcl.instance_number=1
保存 退出
[oracle@lxasm dbs]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.3.0 Production on Tue Mar 19 01:26:05 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to an idle instance. SQL>startup pfile='?/dbs/initlxasmorcl.ora'
启动成功！
这里注意，再成功后，要把dbs目录下的密码文件也改名正确(orc1 变为 orcl)
再登陆进去 赋予sys ,system sysdba权限。否则sqlplus system/password@lxasmorcl as sysdba无法登陆的（报没有权限错误）
这里注意，再成功后，要把dbs目录下的密码文件也改名正确(orc1 变为 orcl)
再登陆进去 赋予sys ,system sysdba权限。否则sqlplus system/password@lxasmorcl as sysdba无法登陆的（报没有权限错误）
还有一个收获，就是你安装完grid，安装完程序，最好顺便也把库建了，而不是甩给别的同事，因为很有可能就会出现 l 1不分的情况。。
当然，是在你没有交代清楚，同事也没问的情况下