data block corrupted

When configure the enterprise manager during 11G upgrade, got the following error messages:

ORA-01578: ORACLE data block corrupted (file # 19, block # 4340)

ORA-01110: data file 19: 'D:\ORADB11G\ORADATA\...\SYSAUX01.DBF'

And run select statements and got the followings:

SQL> SELECT tablespace_name, segment_type, owner, segment_name

FROM  dba_extents WHERE  file_id =19 AND 4340 between block_id AND block_id+blocks-1; 

SQL>  TABLESPACE SEGMENT_TY OWNER      SEGMENT_NAME

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

     SYSAUX     INDEX      SYS        WRM$_SNAPSHOT_PK

any suggestion/idea for how to fix/repair it (we do not have backup) or any bypass so that we can configure the EM? Thanks.