oracle 11g system01.dbf,如何解决系统启动时，出现的system01.dbf文件数据块损坏的问题（在线等）...

D:ORACLEORADATAORCLARCHIVEORACLE_02835.ARC

ORA-328 signalled during: ALTER DATABASE RECOVER    CONTINUE DEFAULT  ...

Mon Sep 20 22:12:46 2004

ALTER DATABASE RECOVER CANCEL

ORA-1547 signalled during: ALTER DATABASE RECOVER CANCEL ...

Mon Sep 20 22:22:10 2004

Shutting down instance (immediate)

License high water mark = 11

Mon Sep 20 22:22:11 2004

ALTER DATABASE CLOSE NORMAL

ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL...

Mon Sep 20 22:22:11 2004

ALTER DATABASE DISMOUNT

Completed: ALTER DATABASE DISMOUNT

archiving is disabled

Mon Sep 20 22:22:14 2004

ARCH shutting down

ARC0: Archival stopped

Starting up ORACLE RDBMS Version: 8.1.6.0.0.

System parameters with non-default values:

processes                = 160

sessions                 = 181