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oracle ×Ô¶¯Ôö³¤ÁÐ Àý×Ó

--´´½¨ÐòÁÐ
create sequence innerid
minvalue 1
maxvalue 999999999
start with 1
increment by 1
cache 20
order;
--´´½¨±í
create table users(
userid int primary key,
username   varchar2(20),
userpwd    varchar2(20)
);
select * from users;
insert into users values(innerid.nextval,'zhangsan','123');
insert into users values(innerid.nextval,'lisi','123');
insert into users values(innerid.nextval,'wangwu','123');
--´´½¨´¥·¢Æ÷
create or replace trigger users_id
before insert on users for each row
begin
     select innerid.nextval into :new.userid from dual;
end users_id;
insert into users(username,userpwd) values('zhaoliu','123');
select * from users;
commit;


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--´´½¨Óû§
create user iagent identified by ia
--profile default 
default  tablespace users
temporary tablespace temp;
--account unlock;
 
--ɾ³ýÓû§
drop user iagent cascade;
--ÐÞ¸ÄÓû§ÃÜÂë
  alter  user  iagent  identified   by ia;
--¸ø´´½¨µ ......

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ÿ¸öOracleÊý¾Ý¿â¶¼ÊÇÓÉOracle Instance£¨ÊµÀý£©ÓëÊý¾Ý¿â£¨Êý¾ÝÎļþ£¬¿ØÖÆÎļþ¡¢ÖØ×öÈÕÖ¾Îļþ£©×é³É£¬ÆäÖÐËùνʵÀý¾ÍÊÇÓû§Í¬Êý¾Ý¿â½»»¥µÄý½é£¬Óû§Í¨¹ýÓÚÒ»¸öʵÀýÏàÁ¬À´²Ù×÷Êý¾Ý¿â¡£¶øÊµÀýÓÖÊÇÓÉͳһµÄÄÚ´æ½á¹¹£¨SGA£¬PGA£¬UGA£©ºÍ ......

³£¼ûOracle HINTµÄÓ÷¨

¡¡1. /*+ALL_ROWS*/
¡¡¡¡±íÃ÷¶ÔÓï¾ä¿éÑ¡Ôñ»ùÓÚ¿ªÏúµÄÓÅ»¯·½·¨,²¢»ñµÃ×î¼ÑÍÌÍÂÁ¿,ʹ×ÊÔ´ÏûºÄ×îС»¯.
¡¡¡¡ÀýÈç:
¡¡¡¡SELECT /*+ALL+_ROWS*/ EMP_NO,EMP_NAM,DAT_IN from BSEMPMS WHERE EMP_NO='SCOTT';
¡¡¡¡2. /*+FIRST_ROWS*/
¡¡¡¡±íÃ÷¶ÔÓï¾ä¿éÑ¡Ôñ»ùÓÚ¿ªÏúµÄÓÅ»¯·½·¨,²¢»ñµÃ×î¼ÑÏìӦʱ¼ä,ʹ×ÊÔ´ÏûºÄ×îС»¯.
¡¡¡¡ÀýÈç ......

oracleÓÅ»¯1

--ÉèÖÃÃÜÂë·¨¹ýÆÚ
alter profile default limit PASSWORD_LIFE_TIME unlimited;
alter profile default limit FAILED_LOGIN_ATTEMPTS unlimited;
--È¡ÏûÉó¼Æ
alter system set audit_trail='FALSE' scope=spfile;
--¶¨ÒåÁ¬½ÓÊý¾Ý¿âµÄ×î´ó½ø³ÌÊý
alter system set processes=1024 scope=spfile;
--¹Ø±ÕÀ¬»ø»ØÊÕÕ¾
al ......

oracleÓÅ»¯2

--¶¨ÒåÊý¾Ý¿âÁ¬½Ó·Ö·¢Æ÷
alter system set dispatchers='(PROTOCOL=TCP)(SERVICE=imapdb)(DISPATCHERS=5)(PROTOCOL=IPC)(DISPATCHERS=5)' scope=spfile;
--¶¨Òå¹²Ïí·þÎñÊý
alter system set shared_servers=20 scope=spfile;
--¶¨Òå¹²Ïí·þÎñµÄsessionÊý
alter system set shared_server_sessions=1024 scope=spfile;
......
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