一次行迁移记录的解决方案

一、查找出有迁移记录的表（解决迁移记录后还是能查出此表，在处理的时候不可以根据这个来判断）
SELECT
owner owner
, table_name table_name
, '' partition_name
, num_rows num_rows
, ROUND((chain_cnt/num_rows)*100, 2) || '%' pct_chained_rows
, avg_row_len avg_row_length
FROM
(select
owner
, table_name
, chain_cnt
, num_rows
, avg_row_len
from
sys.dba_tables
where
chain_cnt is not null
and num_rows is not null
and chain_cnt > 0
and num_rows > 0
and owner != 'SYS')
UNION ALL
SELECT
table_owner owner
, table_name table_name
, partition_name partition_name
, num_rows num_rows
, '<div align="right">' || ROUND((chain_cnt/num_rows)*100, 2) || '%</div>' pct_chained_rows
, avg_row_len avg_row_length
FROM
(select
table_owner
, table_name
, partition_name
, chain_cnt
, num_rows
, avg_row_len
from
sys.dba_tab_partitions
where
chain_cnt is not null
and num_rows is not null
and chain_cnt > 0
and num_rows > 0
and table_owner != 'SYS') b
WHERE
(chain_cnt/num_rows)*100 > 10;

------------------------------------------------------
二、创建记录表
SQL> @/u01/app/oracle/product/10.1/rdbms/admin/utlchain.sql
三、记录发生迁移记录，注意一定要查是否有关联关系，如果有则先禁用后启用
analyze table WFPROCESSINST list chained rows into chained_rows;
select count(*) from chained_rows;4934
select * from chained_rows;

select index_name,index_type,table_name from user_indexes where table_name='WFPROCESSINST';

select constraint_name,constraint_type,table_name from user_constraints d where d.r_constraint_name

in(select constraint_name from user_constraints where table_name='WFPROCESSINST')
-------------有迁移记录的行 consistent gets 不是1---------------------------
SQL> set autotrace on
SQL> select * from WFPROCESSINST where rowid='AAANLvAAIAABJBlAAD';
7 consistent gets

-------------对迁移记录的处理
create table terminal_temp as

select * from WFPROCESSINST where rowid in(select head_rowid from chained_rows where table_name = 'WFPROCESSINST');

copy from tssa/tssa2006@sxtsioms to tssa/tssa2006@sxtsioms create terminal_temp using select * from WFPROCESSINST where rowid in(select head_rowid from chained_rows where table_name = 'WFPROCESSINST');
-------------------------
select count(*)from WFPROCESSINST;31493

select count(*)from terminal_temp;4934

delete WFPROCESSINST

where rowid in

(select head_rowid

from chained_rows

where table_name = 'WFPROCESSINST');

commit;
---------------------
insert into WFPROCESSINST select * from terminal_temp;
copy from tssa/tssa2006@sxtsioms to tssa/tssa2006@sxtsioms Append WFPROCESSINST using select * from terminal_temp;

--------查看处理结果
SQL> set autotrace on
SQL> select * from WFPROCESSINST where rowid='AAANLvAAIAABJBlAAD';
1 consistent gets

truncate table chained_rows;
analyze table WFPROCESSINST list chained rows into chained_rows
select count(*) from chained_rows;---0