SQL> CONN / AS SYSDBA Connected. SQL> SHUTDOWN IMMEDIATE Database closed. Database dismounted. ORACLE instance shut down. --破坏数据快(其实就是清空一个数据块block 95,注意dd和实际数据的block对应关系相差1) [oracle@xifenfei ~]$ dd if=/dev/zero of =/u01/oracle/oradata/XFF/users01.dbf bs=8192 seek=95 count =1 conv=notrunc 1+0 records in 1+0 records out 8192 bytes (8.2 kB) copied, 0.000187113 seconds, 43.8 MB/s SQL> STARTUP ORACLE instance started. Total System Global Area 318767104 bytes Fixed Size 1267236 bytes Variable Size 104860124 bytes Database Buffers 205520896 bytes Redo Buffers 7118848 bytes Database mounted. Database opened. SQL> SELECT COUNT (*) FROM CHF.T_XIFENFEI; SELECT COUNT (*) FROM CHF.T_XIFENFEI * ERROR at line 1: ORA-08103: object no longer exists [oracle@xifenfei ~]$ exp chf/xifenfei tables=t_xifenfei file=/tmp/t_xifenfei.dmp Export: Release 10.2.0.4.0 - Production on Fri Jan 13 22:09:43 2012 Copyright (c) 1982, 2007, Oracle. All rights reserved. Connected to : Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production With the Partitioning, OLAP, Data Mining and Real Application Testing options Export done in ZHS16GBK character set and AL16UTF16 NCHAR character set About to export specified tables via Conventional Path ... . . exporting table T_XIFENFEI EXP-00056: ORACLE error 8103 encountered ORA-08103: object no longer exists Export terminated successfully with warnings. [oracle@xifenfei ~]$ expdp chf/xifenfei tables=t_xifenfei dumpfile=t_xifenfei.dmp Export: Release 10.2.0.4.0 - Production on Friday, 13 January, 2012 22:10:26 Copyright (c) 2003, 2007, Oracle. All rights reserved. Connected to : Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production With the Partitioning, OLAP, Data Mining and Real Application Testing options Starting "CHF" . "SYS_EXPORT_TABLE_01" : chf/******** tables=t_xifenfei dumpfile=t_xifenfei.dmp Estimate in progress using BLOCKS method... Processing object type TABLE_EXPORT/ TABLE /TABLE_DATA Total estimation using BLOCKS method: 384 KB Processing object type TABLE_EXPORT/ TABLE / TABLE ORA-31693: Table data object "CHF" . "T_XIFENFEI" failed to load /unload and is being skipped due to error: ORA-02354: error in exporting/importing data ORA-08103: object no longer exists Master table "CHF" . "SYS_EXPORT_TABLE_01" successfully loaded/unloaded ****************************************************************************** Dump file set for CHF.SYS_EXPORT_TABLE_01 is : /u01/oracle/oracle/product/10.2.0/db_1/rdbms/log/t_xifenfei.dmp Job "CHF" . "SYS_EXPORT_TABLE_01" completed with 1 error(s) at 22:10:50 |