各位大神，oracle 11g 11204版本，没有开归档，没有备份，现在想备份数据库，提示有坏块，下边是备份的提示：

[oracle@FTBILL bakbak1205]$ exp “sys/future@BILL as sysdba” owner=DBUSRBILL buffer=1024000 file=/bakbak1205/expbill.dmp log=/bakbak1205/expbill.log

Export: Release 11.2.0.3.0 - Production on 星期四 12月 5 22:19:04 2019

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连接到: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning and OLAP options
EXP-00008: 遇到 ORACLE 错误 1578
ORA-01578: ORACLE 数据块损坏 (文件号 1, 块号 22895)
ORA-01110: 数据文件 1: ‘/oradata/BILL/BILL/SYS/SYSTEM01.dbf’
EXP-00000: 导出终止失败