探索Oracle之RMAN_07参数文件丢失恢复

探索Oracle之RMAN_07 参数文件丢失恢复，Oracle数据库的参数文件有两种一种是pfile(初始化参数文件)，还有一种是spfile(服务器初

Oracle数据库的参数文件有两种一种是pfile(初始化参数文件)，还有一种是spfile(服务器初始化参数文件)；实际上spfile是pfile衍生过来的一新参数文件，应用9i以后的版本，在9i之前的版本都不支持，只支持pfile；而且pfile是不能通过oracle命令来进行备份的，只有spfile才支持备份。

以后

备份参数文件：

RMAN> backupspfile;

Starting backupat 05-JUL-12

using channelORA_DISK_1

channelORA_DISK_1: starting full datafile backupset

channelORA_DISK_1: specifying datafile(s) in backupset

including currentSPFILE in backupset

channelORA_DISK_1: starting piece 1 at 05-JUL-12

channelORA_DISK_1: finished piece 1 at 05-JUL-12

piecehandle=/DBBak/bak_WWL_07_05_03nfbi5c_1_1 tag=TAG20120705T175348 comment=NONE

channelORA_DISK_1: backup set complete, elapsed time: 00:00:02

Finished backupat 05-JUL-12

Starting ControlFile and SPFILE Autobackup at 05-JUL-12

piecehandle=/DBSoft/product/10.2.0/db_1/dbs/c-5520179-20120705-01 comment=NONE

Finished ControlFile and SPFILE Autobackup at 05-JUL-12

RMAN>

2、备份完之后，我们可以看到如下备份信息：

BS Key Type LV Size Device Type Elapsed Time Completion Time

------- ---- ------------ ----------- ------------ ---------------

3 Full 80.00K DISK 00:00:01 05-JUL-12

BP Key: 3 Status: AVAILABLE Compressed: NO Tag: TAG20120705T175348

Piece Name:/DBBak/bak_WWL_07_05_03nfbi5c_1_1

SPFILE Included: Modification time: 05-JUL-12

3、模拟参数文件丢失：

SQL> showparameter spfile;

NAME TYPE VALUE

----------------------------------------------- ------------------------------

spfile string /DBSoft/product/10.2.0/db_1/db

s/spfileWWL.ora

SQL>

删除参数文件：

[oracle@wwldb ~]$ rm /DBSoft/product/10.2.0/db_1/dbs/spfileWWL.ora

[oracle@wwldb ~]$ ls /DBSoft/product/10.2.0/db_1/dbs/spfileWWL.ora

ls: /DBSoft/product/10.2.0/db_1/dbs/spfileWWL.ora: No such file ordirectory

[oracle@wwldb dbs]$ ll

total 7240

drwxr-xr-x 2 oracle oinstall 4096 Jul 5 18:25 bak

-rw-rw---- 1 oracle oinstall 1544 May 16 16:44 hc_WWL.dat

-rw-rw---- 1 oracle oinstall 24 May 23 15:52 lkDUMMY

-rw-rw---- 1 oracle oinstall 24 May 16 16:47 lkWWL

-rw-r----- 1 oracle oinstall 1536 May 21 15:05 orapwWWL

drwxr-xr-x 2 oracle oinstall 4096 Jul 5 18:25 pfilebak

-rw-r----- 1 oracle oinstall 7389184 Jul 5 17:53 snapcf_WWL.f

[oracle@wwldb dbs]$

来供数据库的启动。