ORA-01102 报错解决方法

SQL> startup
ORACLE instance started.
Total System Global Area  599785472 bytes
Fixed Size                  2022600 bytes
Variable Size             171967288 bytes
Database Buffers          419430400 bytes
Redo Buffers                6365184 bytes
ORA-01102: cannot mount database in EXCLUSIVE mode

这个错误主要是lk文件造成的，该文件位于ORALCE_HOME下的dbs目录下,
这个lk的主要作用是说明DATABASE MOUNT上了,不用在MOUNT了.DATABASE UNMOUNT 后会删除掉,如果DATABASE确实没有MOUNT,这个文件在你也MOUNT上,只有手工删除,所以一定要小心.
具体解决ORA-01102问题的步骤:

# /sbin/fuser -u lkTEST
lkTEST: 4918(oracle) 20726(oracle) 20728(oracle) 20730(oracle) 20732(oracle) 20734(oracle) 20736(oracle) 20738(oracle) 20740(oracle) 20742(oracle) 20744(oracle) 20746(oracle) 20754(oracle) 21781(oracle) 21783(oracle)

该文件没释放，用fuser命令kill掉：

# /sbin/fuser -k lkTEST
lkTEST: 6666 6668 6670 6672 6674 6676 6678 6680 6690 6692 6694 6696 6737 6830
# /sbin/fuser -u lkTEST

然后：

SQL> startup
ORACLE instance started.
Total System Global Area  599785472 bytes
Fixed Size                  2022600 bytes
Variable Size             171967288 bytes
Database Buffers          419430400 bytes
Redo Buffers                6365184 bytes
Database mounted.
Database opened.
SQL>

数据库成功OPEN.