Oracle中大批量删除数据的方法

答案：写一个循环删除的过程。 
create or replace procedure delBigTab(p_TableName in varchar2,p_Condition in varchar2,p_Count in varchar2)  
as 
pragma autonomous_transaction; 
n_delete number:=0; 
begin 
 while 1=1 loop 
EXECUTE IMMEDIATE 
'delete from '||p_TableName||' where '||p_Condition||' and rownum <= :10000' 
USING p_Count; 
if SQL%NOTFOUND then 
exit; 
else 
n_delete:=n_delete + SQL%ROWCOUNT; 
end if; 
commit; 
end loop; 
commit; 
DBMS_OUTPUT.PUT_LINE('Finished!'); 
DBMS_OUTPUT.PUT_LINE('Totally '||to_char(n_delete)||' records deleted!'); 
end delBigTab;  
调用： 
SQL> set timing on 
SQL> exec delBigTab('HS_DLF_DOWNLOG_HISTORY','NUMDLFLOGGUID < 11100000','10000'); 
PL/SQL procedure successfully completed. 
Elapsed: 00:00:18.54 
方法虽好，但我应用在一个亿级数据库时还是觉得慢得不行。就算删一点点数据也觉得好象挺慢的。 

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