实验准备
OGG (DBID=3068169019)
spfile：/u01/app/oracle/fast_recovery_area/OGG/backupset/2018_03_26/o1_mf_ncsnf_TAG20180326T162759_fckd47yp_.bkp
我们分两种情况
1.不知道DBID，知道备份路径
2.知道DBID
（1）.模拟删除spfile
[oracle@ogg-80 dbs]$ cd /u01/app/oracle/product/11.2.0/dbhome_1/dbs
[oracle@ogg-80 dbs]$ mv spfileogg.ora spfileogg.ora.bak
（2）.启动数据库报错
SYS@ogg> startup force;
ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/initogg.ora'
针对第一种情况
1.不知道DBID，知道备份路径
[oracle@ogg-80 ~]$ rman target /
RMAN> startup nomount; ------启动到mount
startup failed: ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/initogg.ora'
starting Oracle instance without parameter file for retrieval of spfile
Oracle instance started
Total System Global Area 1068937216 bytes
Fixed Size 2260088 bytes
Variable Size 281019272 bytes
Database Buffers 780140544 bytes
Redo Buffers 5517312 bytes
RMAN> restore spfile to '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/spfileogg.ora' from '/u01/app/oracle/fast_recovery_area/OGG/backupset/2018_03_26/o1_mf_ncsnf_TAG20180326T162759_fckd47yp_.bkp';
Starting restore at 26-MAR-18
using channel ORA_DISK_1
channel ORA_DISK_1: restoring spfile from AUTOBACKUP /u01/app/oracle/fast_recovery_area/OGG/backupset/2018_03_26/o1_mf_ncsnf_TAG20180326T162759_fckd47yp_.bkp
channel ORA_DISK_1: SPFILE restore from AUTOBACKUP complete
Finished restore at 26-MAR-18
针对第二种情况
2.知道DBID
[oracle@ogg-80 ~]$ rman target /
RMAN> set dbid=3068169019
executing command: SET DBID
RMAN> startup nomount;
startup failed: ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/initogg.ora'
starting Oracle instance without parameter file for retrieval of spfile
Oracle instance started
Total System Global Area 1068937216 bytes
Fixed Size 2260088 bytes
Variable Size 281019272 bytes
Database Buffers 780140544 bytes
Redo Buffers 5517312 bytes
方法一：利用自动备份
RMAN> restore spfile from autobackup;
自动备份这里会报错，因为我们没有设置自动备份
方法二：利用手动备份
RMAN> restore spfile to '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/spfileogg.ora' from '/u01/app/oracle/fast_recovery_area/OGG/backupset/2018_03_26/o1_mf_ncsnf_TAG20180326T162759_fckd47yp_.bkp';
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/31485142/viewspace-2152239/ ，如需转载，请注明出处，否则将追究法律责任。
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rman的连接
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