ORA-01012: not logged 未完全关闭数据库导致ORA-01012: not logged的解决

首先使用SHUTDOWN NORMAL方式关闭 数据库，在数据库未关闭时CTRL+Z停止执行，退出用SQLPLUS重登陆，出现报错：ORA-01012: not logged on

实验如下：

首先执行

SYS@bys1>shutdown

ORA-01013: user requested cancel of current operation

[oracle@bys001 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Sat Sep 7 09:05:08 2013

Copyright (c) 1982, 2009, Oracle. All rights reserved.

Connected.

ERROR:

ORA-01012: not logged on

Process ID: 0

Session ID: 0 Serial number: 0

SYS@bys1>startup

ORA-01012: not logged on

SYS@bys1>conn / as sysdba

Connected to an idle instance.

ERROR:

ORA-01012: not logged on

Process ID: 0

Session ID: 0 Serial number: 0

SYS@bys1>conn bys/bys

ERROR:

ORA-01090: shutdown in progress - connection is not permitted

Process ID: 0

Session ID: 0 Serial number: 0

Warning: You are no longer connected to ORACLE.

解决方法：

找到进程，kill掉就可以了。

[oracle@bys001 ~]$ ps -ef |grep ora_dbw0_

oracle 6519 1 0 Sep06 ? 00:00:15 ora_dbw0_bys1

oracle 20947 20924 0 09:08 pts/0 00:00:00 grep ora_dbw0_

[oracle@bys001 ~]$ kill -9 6519

[oracle@bys001 ~]$ ps -ef |grep ora_dbw0_

oracle 20949 20924 0 09:08 pts/0 00:00:00 grep ora_dbw0_

[oracle@bys001 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Sat Sep 7 09:08:22 2013

Copyright (c) 1982, 2009, Oracle. All rights reserved.

Connected to an idle instance.

SYS@bys1>startup

ORACLE instance started.

Total System Global Area 631914496 bytes

Fixed Size 1338364 bytes

Variable Size 264242180 bytes

Database Buffers 360710144 bytes

Redo Buffers 5623808 bytes

Database mounted.

Database opened.

SYS@bys1>