Oracle ORA-01034，ORA-27101，ORA-00600

本机IP地址：192.168.1.163

[oracle@rtest ~]$ sqlplus /nolog

SQL*Plus: Release 10.2.0.2.0 - Production on Sun May 4 19:32:13 2014

@>conn sys/oracle

ERROR:

ORA-01034: ORACLE not available

ORA-27101: shared memory realm does not exist

Linux Error: 2: No such file or directory

产生ORA-01034和ORA-27101是因为数据库没有启动，需要有sysdba进入启动数据库。

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@>conn sys/oracle as sysdba

Connected to an idle instance.

SYS@TEST0422>startup

ORA-00600: internal error code, arguments: [keltnfy-ldmInit], [46], [1], [], [], [], [], []

SYS@TEST0422>startup

ORA-24324: service handle not initialized

ORA-01041: internal error. hostdef extension doesn't exist

产生以上ORA-00600根本原因是服务器hostname没有正确配置，通过hostname命令得到的主机名无法ping通，Oracle10g认为主机无法达到所以启动数据库报错。
解决方法：将hostname添加到/etc/hosts文件中，并且修改/etc/sysconfig/network，让hostname保持一致。重新启动数据库。

[root@rtest ~]# vi /etc/sysconfig/network

NETWORKING=yes

NETWORKING_IPV6=no

HOSTNAME=rtest.localdomain

[root@rtest ~]# vi /etc/hosts

# Do not remove the following line, or various programs

# that require network functionality will fail.

127.0.0.1 ocm1.localdomain ocm1 localhost.localdomain localhost

::1 localhost6.localdomain6 localhost6

192.168.1.163 rtest.localdomain rtest

之前是192.168.1.161 ocm1.localdomian ocm1

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[oracle@rtest ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 10.2.0.2.0 - Production on Sun May 4 19:43:40 2014

Connected to an idle instance.

SYS@TEST0422>startup

ORACLE instance started.

Total System Global Area 285212672 bytes

Fixed Size 1260420 bytes

Variable Size 92275836 bytes

Database Buffers 188743680 bytes

Redo Buffers 2932736 bytes

Database mounted.

Database opened.

SYS@TEST0422>