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sql>SELECT username,PROFILE from dba_users;
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sql>ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;
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SQL> conn sys as sysdba;
SQL> select username,account_status from dba_users;
SQL> alter user sysman account unlock;
SQL>alter user xxx identified by xxx;
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create sequence myse
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start with
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1.view ÏÞÖÆ
create or replace view my_view01
as select * from emp
with check option
/
2.synonym ͬÒå´Ê
create synonym dept for scott.dept;
select * from dept;
3.sysdba ¹«¹²
drop synonym dept;
create public synonym dept for scott.dept;
desc dba_synonyms
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create procedure ¹ý³ÌÃû [²ÎÊý1 in|out|in out¡­]
    ¾Ö²¿±äÁ¿ÉùÃ÷
    Ö´ÐÐÓï¾ä
in
out
in out
    ¹ý³ÌÃû(²ÎÊýÀï±í); create or replace
procedure add123 as
i integer;
j integer;
begin
i:=1;
j:=2;
dbms_output.put_l ......
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