1、跟踪错误表
alter session set max_dump_file_size=unlimited;
alter session set db_file_multiblock_read_count=1;
alter session set events ‘10200 trace name context forever, level 1’;
执行下面语句
SELECT COUNT(*) FROM QXTDEV1.TAB_SMS_MT_DOWN
报错
ORA-01410: invalid ROWID
alter session set events ‘10200 trace name context off’;
2、查看跟踪文件尾部
Consistent read started for block 0 : 00400652
env: (scn: 0x0abf.1ee04657 xid: 0x0000.000.00000000 uba: 0x00000000.0000.00 statement num=0 parent xid: xid: 0x0000.000.00000000 scn: 0x0000.00000000 0sch: scn: 0x0000.00000000)
Consistent read finished for block 0 : 400652
Consistent read finished for block 0 : 400652
通过这个文件看到文件读到400652的块的时候终止了，错误应该在这块上
3、分析400652块内容
–转换为10进制
SELECT to_number(‘400652′,’xxxxxxxx’) FROM dual;
–求文件号和块号
SELECT DBMS_UTILITY.DATA_BLOCK_ADDRESS_FILE(4195922),
DBMS_UTILITY.DATA_BLOCK_ADDRESS_BLOCK(4195922)
FROM DUAL;
4、dump文件号为1，块号为1618的内容
alter system dump datafile 1 block 1618;
Block header dump: 0x00400652
Object id on Block? Y
seg/obj: 0xde csc: 0xabf.1e400c0c itc: 2 flg: O typ: 1 – DATA
fsl: 0 fnx: 0x0 ver: 0x01
得到object_id为de，转化为十进制
SELECT to_number(‘de’,’xx’) FROM dual;
查询all_objects表
SELECT * FROM All_Objects WHERE object_id=222;
发现这个数据库（绝对块号400652，相对：文件号1，块号1618）指向的表为dual
5、得出结论
我们的QXTDEV1.TAB_SMS_MT_DOWN表中的数据块指向了sys.dual表，从而出现了ORA-01410错误