找出数据库中所有表表中REMARK列中含有WN、wind、wlr中表名和数量

declare
i number:=0;
begin
 for c1 in
(select table_name from user_tab_columns where column_name='REMARK')
loop
 EXECUTE IMMEDIATE 'select count(*)  from  '|| c1.table_name
  ||' where UPPER(REMARK) LIKE ''%WN%'' or UPPER(remark) like ''%WIND%'' or UPPER(remark) like ''%WLR%'''
  into  i;
    if i>0 then
      dbms_output.put_line(c1.table_name||'------'||i);
      end if;
    end loop;
end;

1、创建允许登录用户表

CREATE TABLE "CHF"."LOG$LOGIN_OS"
  (
    "OS_USER" VARCHAR2(60 BYTE)
  )

2、创建触发器实现限制用户登录

create or replace
TRIGGER TR_LOGIN_RECORD_TEST
AFTER logon ON DATABASE
DECLARE
mtSession v$session%ROWTYPE;
CURSOR cSession(iiQuerySid IN NUMBER) IS
   SELECT * FROM v$session where USERNAME is not null
    and nvl(osuser,'x') <> 'SYSTEM'   and type <> 'BACKGROUND' and audsid = iiQuerySid;
  USER_NUM NUMBER(5);
  V_SQL VARCHAR2(100);
BEGIN
OPEN cSession(userenv('SESSIONID'));
  FETCH cSession INTO mtSession;
  IF cSession%FOUND THEN
  select count(*) into USER_NUM FROM CHF.LOG$LOGIN_OS WHERE OS_USER=mtSession.Osuser;
  IF USER_NUM!=0 THEN
  V_SQL:=' alter system kill session '||''''||mtSession.Sid||','||mtSession.Serial#||'''';
  EXECUTE IMMEDIATE V_SQL;
  END IF;
  END IF;
  CLOSE cSession;
EXCEPTION
  WHEN OTHERS THEN
   -- dbms_output.put_line('登记登录信息错误：'||SQLERRM);
    RAISE;
END;

注：使用sysdba帐号创建触发器，因为在oracle中user不能kill掉自己的session，如果是用sysdba那么就可以kill掉其他的任何非自身的session

1、先需要建立一张表，用于存放登陆信息

create table LOG$INFORMATION
(
  USERNAME VARCHAR2(30),
  TERMINAL VARCHAR2(50),
  IPADRESS VARCHAR2(20),
  OSUSER VARCHAR2(30),
  MACHINE VARCHAR2(64),
  PROGRAM VARCHAR2(64),
  SID NUMBER,
  SERIAL# NUMBER,
  AUSID NUMBER,
  LOGINTIME DATE default sysdate,
  LOGout_TIME date
)

2、创建触发器，记载登录信息

CREATE OR REPLACE TRIGGER TR_LOGIN_RECORD
AFTER logon ON DATABASE
DECLARE
mtSession v$session%ROWTYPE;
CURSOR cSession(iiQuerySid IN NUMBER) IS
   SELECT * FROM v$session
      WHERE nvl(osuser,'x') <> 'SYSTEM'   and type <> 'BACKGROUND' and audsid = iiQuerySid;
BEGIN
OPEN cSession(userenv('SESSIONID'));
  FETCH cSession INTO mtSession;
  IF cSession%FOUND THEN
INSERT INTO log$information(username,logintime,terminal,ipadress,osuser,machine,
program,sid,serial#,ausid)
       VALUES(USER,SYSDATE,mtSession.Terminal,
              SYS_CONTEXT ('USERENV','IP_ADDRESS'),mtSession.Osuser,
          mtSession.Machine,mtSession.Program,mtSession.Sid,mtSession.Serial#,userenv('SESSIONID'));
  END IF;
  CLOSE cSession;
EXCEPTION
  WHEN OTHERS THEN
    RAISE;
END;

3、用户登出触发器，记录登出时间

create or replace trigger TR_LOGOFF_RECORD
before LOGOFF ON DATABASE
DECLARE
mtSession v$session%ROWTYPE;
CURSOR cSession(iiQuerySid IN NUMBER) IS
   SELECT * FROM v$session where
       nvl(osuser,'x') <> 'SYSTEM'   and type <> 'BACKGROUND' and audsid = iiQuerySid;
BEGIN
OPEN cSession(userenv('SESSIONID'));
  FETCH cSession INTO mtSession;
  IF cSession%FOUND THEN
            UPDATE LOG$INFORMATION SET LOGOUT_TIME=SYSDATE WHERE sid=mtSession.Sid AND serial#=mtSession.Serial#;
  END IF;
  CLOSE cSession;
EXCEPTION
  WHEN OTHERS THEN
    RAISE;
END;

要点
chr(10)–表示换行
set heading off–不显示表格头部
set pagesize 0–不分页
set linesize 800–行宽
spool filename–写入到文件中
sql语句

select 'declare'||chr(10)||' i   integer:=0;'||chr(10)||'cursor cur is select rowid as rid from '||t1 ||' WHERE DATASOURCE=''WN'' OR MODIFYSOURCE=''WN'';'||chr(10)||'begin for c in cur loop '||chr(10)||'i:=i+1;'||chr(10)|| 'update '||t1||chr(10)||'SET DATASOURCE=F_BYF_UPDATE_WN(datasource),MODIFYSOURCE=F_BYF_UPDATE_WN(MODIFYSOURCE),REMARK=F_BYF_UPDATE_WN(REMARK) WHERE rowid=c.rid;'||chr(10)|| ' if mod(i,200)=0 then'||chr(10)|| '  commit;'||chr(10)||'end if;'||chr(10)||' if mod(i,20000)=0 then'||chr(10)||'  dbms_lock.sleep(40);'||chr(10)||' if i>30000 then'||chr(10)|| ' dbms_lock.sleep(40);'||chr(10)||' end if;'||chr(10)||' end if;'||chr(10)|| ' if i>500000 then'||chr(10)||'  exit;'||chr(10)||' end if;'||chr(10)||' end loop;'||chr(10)||'  commit;'||chr(10)||'end;'||chr(10)||'/'||chr(10)||'--------'||t1||'-------------' from t1;

效果

declare
 i      integer:=0;
cursor cur is select rowid as rid from FUND294
 WHERE DATASOURCE='WN' OR MODIFYSOURCE='WN';
begin for c in cur loop
i:=i+1;
update FUND294
SET DATASOURCE=F_BYF_UPDATE_WN(datasource),MODIFYSOURCE=F_BYF_UPDATE_WN(MODIFYSOURCE),REMARK=F_BYF_UPDATE_WN(REMARK) WHERE rowid=c.rid;
 if mod(i,200)=0 then
  commit;
end if;
 if mod(i,20000)=0 then
  dbms_lock.sleep(40);
 if i>30000 then
 dbms_lock.sleep(40);
 end if;
 end if;
 if i>500000 then
  exit;
 end if;
 end loop;
  commit;
end;
/
--------FUND294-------------

一、创建物化视图主要语法

 create materialized view [view_name]
     {TABLESPACE (表空间名)}--保存表空间
     {BUILD [DEFERRED|IMMEDIATE(默认值)]} --延迟刷新还是立即刷新
refresh [fast|complete|force]
[
on [commit|demand] |
start with (start_time) next (next_time)
]
as
{创建物化视图用的查询语句}

二、相关参数说明
创建物化视图主要选项说明
创建物化视图时可以指定多种选项，下面对几种主要的选项进行简单说明：

[refresh [fast | complete | force]
         [on demand | commit]
         [start with date]
         [next date]
         [with {primary key | rowid}]
]

创建实体化试图日志主要选项说明
如果需要进行快速刷新，则需要建立实体化视图日志。实体化视图日志根据不同实体化视图的快速刷新的需要，可以建立为ROWID或PRIMARY KEY类型的。还可以选择是否包括SEQUENCE、INCLUDING NEW VALUES以及指定列的列表。

三、举例说明
1、简单示例

 create materialized view MV_except_pattern_orders
refresh Complete on demand
      start with to_date('2010-11-06 13:20:51','YYYY-MM-DD HH24:MI:SS') next sysdate+1/(24*60)
as
    select * from v_except_pattern_orders

2、带日志物化视图

--创建物化视图日志
create materialized view log on table1
tablespace ts_data --日志保存在特定的表空间
with rowid;
--创建物化视图主体
create materialized view MV_LVY_LEVYDETAILDATA
TABLESPACE ZGMV_DATA --保存表空间
BUILD DEFERRED --延迟刷新不立即刷新
refresh force --如果可以快速刷新则进行快速刷新，否则完全刷新
on demand --按照指定方式刷新
start with to_date('24-11-2005 18:00:10', 'dd-mm-yyyy hh24:mi:ss') --第一次刷新时间
next TRUNC(SYSDATE+1)+18/24 --刷新时间间隔
as
as select * from table1;