環境：Oracle10g，操作系統5.2
數據庫系統在rootvg下/Oracle文件系統下，數據文件在datavg下/oradata文件系統下
控制文件在 $/Oracle_HOME/dbs/一個和/oradata下兩個
重做日志文件在 $/Oracle_HOME/dbs/和/oradata下每組日志文件各一個，共三組
有最新spfile文件備份。
1、rootvg損壞，重新安裝操作系統。
2、安裝Oracle數據庫系統文件
3、恢復spfile文件到$/Oracle_HOME/dbs/下，
4、startup nomount，出現錯誤提示，建立$/Oracle_BASE/hb052500/cdump 和udump
5、startup nomount，出現錯誤提示
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文件中列出的路徑，建立相應路徑後台進程目錄和歸檔目錄
*.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，出現錯誤提示
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>
