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iCount :=1;
for rec in cur_name loop
insert into table_name (.....);//DML Lanaguage
if iCount =2000 then
commit;
iCount:=0;
else
iCount:= iCount +1;
end if;
end loop;
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http://www.cnblogs.com/sleepywang/archive/2009/10/13/1582654.html
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to_date() function
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create tablespace ts_stone
logging
datafile 'xxx.dbf'
size 100m
autoextend on
next 100m maxsize 2048m
extent management local;
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create temporary tablespace temp_ts ......