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Oracle Óαê Cursor ʹÓÃ

create or replace procedure getok
as
cursor mycur is select ids,name from aaa where name not in (select names from ok);
vempno aaa.ids%type;
vename aaa.name%type;
begin
open mycur;
loop
fetch mycur into vempno,vename;
exit when mycur%notfound;
if mycur%found then
    insert into ok values(vempno,vename);
end if;
end loop;
dbms_output.put_line('I Found You!'||mycur%rowcount||'ÐÐ');
close mycur;
end getok;
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Oracle DropÃüÁî

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drop tablespace tablespace_name including contents;
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drop tablespace tablespace_name including datafiles;
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Oracle Flashback Technology


Oracle Flashback Technology
Oracle Flashback Technology reduces recovery time from hours to minutes.
from: http://www.oracle.com/technology/deploy/availability/htdocs/Flashback_Overview.htm
According to many studies, 40% of application outages are caused by operator or user errors. Part of be ......

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¡¡¡¡select * from v$version;
¡¡¡¡²é¿´±í¿Õ¼äµÄʹÓÃÇé¿ö
¡¡¡¡select sum(bytes)/(1024*1024) as free_space,tablespace_name
¡¡¡¡from dba_free_space
¡¡¡¡group by tablespace_name;
¡¡¡¡SELECT A.TABLESPACE_NAME,A.BYTES TOTAL,B.BYTES USED, C.BYTES FREE,
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   ÔÚÒ»°ãSelectÓï¾äÖÐÎÒÃÇͨ¹ýOrder by ...Asc/DescÀ´½øÐÐÅÅÐò¡£µ«ÊÇÕâÖÖÅÅÐò·½Ê½ÔÚÊä³öʱ£¬²»°üº¬ÅÅÐòºóµÄÐòºÅÐÅÏ¢¡£
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   1. RANK ( ) OVER ( [query_partition_clause] order_by_clause )
   RANK ( ) OVER ( [query_p ......
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