Performing a full database disaster recovery with RMAN

1. Make the RMAN backup set pieces available.

2. Restore the database spfile from autobackups.  --先恢复参数文件

3. Restore the control file from autobackups.--再恢复控制文件

4. Run the RMAN restore and recover command.  --mount状态下restore和recover数据文件

5. Open the database with the alter database open resetlogs command. --以resetlogs方式打开数据库