ORA-01034:ORACLE not available问题的解决方法

刚装上的oracle9i,上次还能用呢,这次突然用不了.

[oracle@R39i oracle]$ sqlplus scott/tiger

SQL*Plus: Release 9.2.0.4.0 - Production on Mon Nov 24 11:06:50 2008

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

ERROR:

ORA-01034: ORACLE not available

ORA-27101: shared memory realm does not exist

Linux Error: 2: No such file or directory

[root@R39i root]# id oracle

uid=500(oracle) gid=501(dba) groups=501(dba)

[root@R39i root]# su - oracle

[oracle@R39i oracle]$ lsnrctl start

LSNRCTL for Linux: Version 9.2.0.4.0 - Production on 24-NOV-2008 10:57:29

Copyright (c) 1991, 2002, Oracle Corporation. All rights reserved.

Starting /oracle/product/9i/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 9.2.0.4.0 - Production

System parameter file is /oracle/product/9i/network/admin/listener.ora

Log messages written to /oracle/product/9i/network/log/listener.log

Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))

TNS-12542: TNS:address already in use

TNS-12560: TNS:protocol adapter error

TNS-00512: Address already in use

   Linux Error: 98: Address already in use

Listener failed to start. See the error message(s) above...

[oracle@R39i oracle]$ lsnrctl status

LSNRCTL for Linux: Version 9.2.0.4.0 - Production on 24-NOV-2008 11:21:13

Copyright (c) 1991, 2002, Oracle Corporation. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))

STATUS of the LISTENER

==============================================

[oracle@R39i oracle]$ lsnrctl status

LSNRCTL for Linux: Version 9.2.0.4.0 - Production on 24-NOV-2008 11:21:13

Copyright (c) 1991, 2002, Oracle Corporation. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))

STATUS of the LISTENER

------------------------

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 9.2.0.4.0 - Production

Start Date                24-NOV-2008 10:52:27

Uptime                    0 days 0 hr. 28 min. 45 sec

Trace Level               off

Security                  OFF

SNMP                      OFF

Listener Parameter File   /oracle/product/9i/network/admin/listener.ora

Listener Log File         /oracle/product/9i/network/log/listener.log

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC)))

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=R39i)(PORT=1521)))

Services Summary...

Service "PLSExtProc" has 1 instance(s).

Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...

Service "mydata" has 1 instance(s).

Instance "mydata", status UNKNOWN, has 1 handler(s) for this service...

The command completed successfully

呵呵，原来监听已经启动了.

[oracle@R39i oracle]$ sqlplus /nolog

SQL*Plus: Release 9.2.0.4.0 - Production on Mon Nov 24 12:01:37 2008

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

SQL> connect /as sysdba

Connected to an idle instance.

SQL> startup

ORACLE instance started.

Total System Global Area 122754448 bytes

Fixed Size                   451984 bytes

Variable Size              88080384 bytes

Database Buffers           33554432 bytes

Redo Buffers                 667648 bytes

Database mounted.

Database opened.

数据库就可以用了。

总结，

1,数据库没有打开时，其它用户是联不上的。

2,如果用sys也打不开数据库，则可能是坏境变量的事了。

可用下面的方法来检查,看是否和你预想的一样。

env |grep ORACLE