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环境：oracle10g，操作系统5.2

数据库系统在rootvg下/oracle文件系统下，

数据文件在datavg下/oradata文件系统下

控制文件在 $/ORACLE_HOME/dbs/一个和/oradata下两个

重做日志文件在 $/ORACLE_HOME/dbs/和/oradata下每组日志文件各一个，共三组

有最新spfile文件备份。

1、rootvg损坏，重新安装操作系统。

2、安装oracle数据库系统文件

3、恢复spfile文件到$/ORACLE_HOME/dbs/下，

4、startup nomount，出现错误提示，建立$/ORACLE_BASE/hb052500/cdump 和udump

5、startup nomount，出现错误提示

SQL> startup nomount

ORA-00444: background process "MMAN" failed while starting

ORA-07446: sdnfy: bad value '' for parameter .

ORA-07446 sdnfy: bad value 'string' for parameter string.

Cause: The directory specified as the value for the stated parameter could not

be used.

Action: Make sure the directory you have specified is a valid directory/file

specification.

6、建立pfile文件

SQL> create pfile from spfile;

File created.

7、查看pfile文件，按照pfile文件中列出的路径，建立相应路径后台进程目录和归档目录

*.log_archive_dest_1='LOCATION=/oracle/app/oracle/OraHome/dbs/archive'

*.background_dump_dest='/oracle/app/oracle/admin/hb052500/bdump'

$ cd $/ORACLE_BASE/hb052500/

$ ls

cdump udump

$ mkdir bdump

$ cd $ORACLE_HOME/dbs/

$ ls

hb052500 init.ora inithb052500.ora

hc_hb052500.dat initdw.ora spfilehb052500.ora

$ mkdir archive

8、startup nomount成功。

$ sqlplus /nolog

SQL*Plus: Release 10.1.0.2.0 - Production on Sun Oct 16 21:23:17 2005

Copyright (c) 1982, 2004, Oracle. All rights reserved.

SQL> conn / as sysdba

Connected to an idle instance.

SQL> startup nomount;

ORACLE instance started.

Total System Global Area 289406976 bytes

Fixed Size 1328912 bytes

Variable Size 262387952 bytes

Database Buffers 25165824 bytes

Redo Buffers 524288 bytes

SQL>

9、alter database mount，出现错误提示

SQL> alter database mount;

alter database mount

*

ERROR at line 1:

ORA-01990: error opening password file '/oracle/app/oracle/OraHome/dbs/orapw'

ORA-27037: unable to obtain file status

IBM AIX RISC System/6000 Error: 2: No such file or directory

Additional information: 3

10、建立口令文件

orapwd file=$ORACLE_HOME/dbs/orapwd.ora password=oracle

11、

SQL> alter database mount;

alter database mount

*

ERROR at line 1:

ORA-01100: database already mounted

SQL> alter database open;

alter database open

*

ERROR at line 1:

ORA-38760: This database instance failed to turn on flashback database

SQL> alter database flashback off;

Database altered.

SQL> alter database open;

Database altered.

SQL> archive log list;

Database log mode Archive Mode

Automatic archival Enabled

Archive destination /oracle/app/oracle/OraHome/dbs/archive

Oldest online log sequence 614

Next log sequence to archive 616

Current log sequence 616

SQL>

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