我们知道数据库启动到nomount状态需要参数文件,那么参数文件丢了该怎么办呢?博主来奉上解决方法~~
创建文本文件,让数据库启动到nomount状态:
1、环境变量
[oracle@ocp dbs]$ pwd
/u01/app/oracle/product/11.2.0/db_1/dbs
[oracle@ocp dbs]$ vi initbibi.ora
[oracle@ocp dbs]$ cat initbibi.ora
db_name=bibi #数据库名称
[oracle@ocp ~]$ export ORACLE_SID=bibi
[oracle@ocp ~]$ echo $ORACLE_SID
bibi
[oracle@ocp ~]$ huahua
SQL*Plus: Release 11.2.0.4.0 Production on Mon Feb 25 17:35:18 2019
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to an idle instance.
SYS@bibi> startup
ORACLE instance started.
Total System Global Area 217157632 bytes
Fixed Size 2251816 bytes
Variable Size 159384536 bytes
Database Buffers 50331648 bytes
Redo Buffers 5189632 bytes
ORA-00205: error in identifying control file, check alert log for more info
如上报错是因为我们模拟了一个数据库,并没有创建控制文件。
不过该方法的其他值都是默认的,不实用。
2、用模板写
[oracle@ocp dbs]$ cat init.ora | grep -v ^#|grep -v ^$ >initqq.ora
[oracle@ocp dbs]$ vi initqq.ora
[oracle@ocp dbs]$ cat initqq.ora
db_name='qq' #数据库名称
memory_target=1G
processes = 150
audit_file_dest='/u01/app/oracle/admin/qq/adump' #告警文件路径
audit_trail ='db'
db_block_size=8192
db_domain=''
db_recovery_file_dest='/u01/app/oracle/flash_recovery_area' #数据库恢复文件路径
db_recovery_file_dest_size=2G
diagnostic_dest='/u01/app/oracle'
dispatchers='(PROTOCOL=TCP) (SERVICE=ORCLXDB)'
open_cursors=300
remote_login_passwordfile='EXCLUSIVE'
undo_tablespace='UNDOTBS1'
control_files = (/u01/app/oracle/oradata/qq/control1, /u01/app/oracle/oradata/qq/control2) #控制文件
compatible ='11.2.0'
注意要去另一个终端查看以上文件夹是否存在,不存在的用mkdir -p 创建。
[oracle@ocp qq]$ export ORACLE_SID=qq
[oracle@ocp qq]$ echo $ORACLE_SID
qq
[oracle@ocp qq]$ huahua
SQL*Plus: Release 11.2.0.4.0 Production on Mon Feb 25 17:52:31 2019
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to an idle instance.
SYS@qq> startup nomount;
ORACLE instance started.
Total System Global Area 1068937216 bytes
Fixed Size 2260088 bytes
Variable Size 671089544 bytes
Database Buffers 390070272 bytes
Redo Buffers 5517312 bytes
SYS@qq> alter database mount;
alter database mount
*
ERROR at line 1:
ORA-00205: error in identifying control file, check alert log for more info
如上错误也是因为没有控制文件,控制文件故障怎么恢复呢?看博主的其他博客叭。
(能启动到nomount阶段,就说明参数文件没有问题。)