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conn / as sysdba;
create user t1 identified by t1;
create user t2 identified by t2;
grant connect to t1,t2;
grant create table, create view to t1 with admin option;
conn t1/t1
grant create table to t2;
conn / as sysdba;
select * from dba_sys_privs where grantee in('T1', 'T2');
GRANTEE PRIVILEGE ADM
------------------------------ ---------------------------------------- ---
T1 CREATE TABLE YES
T1 CREATE VIEW YES
T2 CREATE TABLE NO
with admin option ¿Éʹ±»ÊÚÓèȨÏÞÕßÓÐȨתÊÚÆäËûÈË¡£
revoke create table, create view from t1;
select * from dba_sys_privs where grantee in('T1', 'T2');
GRANTEE PRIVILEGE ADM
------------------------------ ---------------------------------------- ---
T2 CREATE TABLE NO
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conn test/test
grant select on t to t1 with grant option;
conn t1/t1
grant select on test.t to t2;
conn test/test
select * from dba_tab_privs where grantee in('T1', 'T2');
GRANTEE OWNER TABLE_NAME GRANTOR PRIVILEGE
------------------------------ ------------------------------ ------------------------------ ------- --------------------------------
T2 TEST T T1 SELECT
T1 TEST T TEST SELECT
revoke select on t from t1;
select * from dba_tab_privs where grantee in('T1', 'T2');
SQL> select * from dba_tab_privs where grantee in('T1', 'T2');
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create role ttt;
grant create table, create user, create session to ttt with admin option;
grant select on test.t to ttt with grant option;
SQL> grant select on test.t to ttt with grant option;
grant select on test.t to ttt with grant option
ORA-01926:
ÎÞ·¨Ê¹ÓÃwith grant optionÑ¡Ïî¸ø½ÇÉ«ÊÚȨ¡£
grant select on test.t to ttt;
create user d identified by d;
create user e identified by e;
grant ttt to d with admin option;
conn d/d
grant ttt to e;
select * from test.t;
SQL> select * from test.t;
conn / as
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select job,count(empno) from emp
where job in(select job from emp group by job having min(sal)>1500)
group by job;
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select e.ename,d.dname,m.ename,e.sal,sa. ......
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create table emp1
as
select * from emp where deptno = 20;
updateµôemp1ÖеIJ¿·ÖÊý¾Ý
update emp1
set sal = sal + 100,
comm = nvl(comm,0) + 50
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sessions=1.1*processes + 5
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SQL> show parameter processes;
NAME &n ......
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http://freeglad.javaeye.com/blog/586444
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backup.sh
rq=`date '+%Y%m%d%H%M'`
su - oracle -c "exp zjhk/zjhk_123 owner=zjhk file=/home/oracle/zjhk_$rq.dmp"
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