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探索Oracle之RMAN_07 参数文件丢失恢复

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Release: 2016-06-07 17:15:59
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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spfilepfile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。

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