而逻辑损坏的修复，通常是使用dbms_repair 包将损坏块忽略
SQL> exec dbms_repair.skip_corrupt_blocks('SYS','T1');
PL/SQL procedure successfully completed.
SQL> update t1 set object_name=rownum;
22849 rows updated.
SQL> commit;
Commit complete.
构建并修复逻辑损坏块和物理损坏块(三)
188 to 8191 Dba:0x01400014
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ff060000 l ....
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