记一次ORA-01102导致数据库实例无法启动案例

1.现象

由于之前启动过一次报错，首先关闭数据库，然后重启

$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.2.0 Production on 星期二 5月 26 15:36:50 2015

Copyright (c) 1982, 2010, Oracle. All rights reserved.

连接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> shutdown immediate

ORA-01507: database not mounted

ORACLE 例程已经关闭。

SQL>

SQL> startup

ORACLE 例程已经启动。

Total System Global Area 5.3447E+10 bytes

Fixed Size 2232248 bytes

Variable Size 3.2481E+10 bytes

Database Buffers 2.0938E+10 bytes

Redo Buffers 26517504 bytes

ORA-01102: cannot mount database in EXCLUSIVE mode

SQL>

SQL> exit

从 Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options 断开

$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.2.0 Production on 星期二 5月 26 15:43:32 2015

Copyright (c) 1982, 2010, Oracle. All rights reserved.

连接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL>

SQL> shutdown immediate

ORA-01507: database not mounted

ORACLE 例程已经关闭。

SQL>

SQL> exit

从 Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options 断开

2.分析原因

到$ORACLE_HOME/dbs下找到lk开头文件，这个错误主要是lk文件造成的

它的主要作用是说明DATABASE MOUNT上了,不用在MOUNT了；DATABASE UNMOUNT 后会自动删除,但异常情况时文件存在的话，即使数据库已经停掉，系统也会认为数据库已经mount了

$ cd $ORACLE_HOME/dbs

$ ls -l

total 96

-rw-rw---- 1 oracle oinstall 1544 Nov 17 2014 hc_DBUA0.dat

-rw-rw---- 1 oracle oinstall 1544 Nov 17 2014 hc_itdb1.dat

-rw-rw---- 1 oracle oinstall 1544 May 26 15:43 hc_itsys.dat

-rw-rw---- 1 oracle oinstall 1544 May 26 15:43 hc_itsys1.dat

-rw-rw---- 1 oracle oinstall 1544 May 13 16:16 hc_orcl.dat

-rw-r--r-- 1 oracle oinstall 2851 May 15 2009 init.ora

-rw-r----- 1 oracle oinstall 24 Nov 17 2014 lkITSYS1

-rw-r----- 1 oracle oinstall 24 Aug 04 2014 lkORCL

-rw-r----- 1 oracle oinstall 1536 Nov 17 2014 orapwitsys1

-rw-r----- 1 oracle oinstall 1536 Aug 04 2014 orapworcl

-rw-r----- 1 oracle oinstall 2560 May 05 10:15 spfileitsys1.ora

-rw-r----- 1 oracle oinstall 2560 Feb 10 22:00 spfileorcl.ora

3.解决方法

用fuser命令kill掉占用lkITSYS1文件的进程

$ fuser -k lkITSYS1

lkITSYS1: 5701814 5767372 5832954 6946854 7209198 7667712 7930062 8323164 8388624 8847426 9306156 9633968 9699564 9895986 16187422

$ fuser -u lkITSYS1

lkITSYS1:

$

$

$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.2.0 Production on 星期二 5月 26 15:46:35 2015

Copyright (c) 1982, 2010, Oracle. All rights reserved.

已连接到空闲例程。

SQL>

SQL> startup

ORACLE 例程已经启动。

Total System Global Area 5.3447E+10 bytes

Fixed Size 2232248 bytes

Variable Size 3.2481E+10 bytes

Database Buffers 2.0938E+10 bytes

Redo Buffers 26517504 bytes

数据库装载完毕。

数据库已经打开。

SQL>