背景说明：在当前数据库中，每半个小时创建一张基于时间点的表，表内容来自于另一个数据库orcl中shall.Scott_Emp。

 

1.当前数据库准备TNS

----准备另一个数据库orcl的tns，后面好创建db_link

[oracle@zyx ~]$ vim $ORACLE_HOME/network/admin/tnsnames.ora

db_orcl =

  (DESCRIPTION =

    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.11.22)(PORT = 1521))

    (CONNECT_DATA =

      (SERVER = DEDICATED)

      (SERVICE_NAME = orcl)

    )

  )

 

2.创建DB_LINK

----当前数据库创建连接另一数据库的link

create public database link db_orcl_link connect to shall identified by shall using 'db_orcl';

 

----测试：

sys@ORCL>select count(*) from Scott_Emp@db_orcl_link;

  COUNT(*)

----------

        14

 

3.创建存储过程

----先创建一张表，用于存放我们每半个小时生成的表名，不然很难知道到底有哪些表

create table temp_table (tablename varchar2(100));

 

----基于时间点创建表名，内容来自于数据库orcl中shall.Scott_Emp

create or replace procedure p_Scott_Emp_bak is

     v_date      varchar2(16);

     v_sql        varchar2(2000);

     v_tablename  varchar2(20);

begin

   select to_char(sysdate, 'yyyymmddhh24mi') into v_date from dual;

    v_tablename := 't_' || v_date;

    v_sql  := 'create table '|| v_tablename ||' as select * from Scott_Emp@db_orcl_link';

  dbms_output.put_line(v_sql);

  execute immediate v_sql;
  insert into temp_table values ('t_'||v_date);

  commit;

end;

/

 

----调用存储过程进行测试

sys@ORCL>set serveroutput on

 

sys@ORCL>exec p_Scott_Emp_bak;

create table t_201604251058 as select * from Scott_Emp@db_orcl_link

PL/SQL procedure successfully completed.

 

sys@ORCL>select * from temp_table;

TABLENAME

----------------------------------------------------------------------------------------------------

t_201604251058

 

sys@ORCL>select count(*) from t_201604251058;

  COUNT(*)

----------

        14

 

4.创建job

----创建JOB每30分钟执行一次

sys@ORCL>var job1 number

sys@ORCL>exec dbms_job.submit(:job1,'p_Scott_Emp_bak;',sysdate,'sysdate+30/1440');

PL/SQL procedure successfully completed.

 

----手动运行一次

sys@ORCL>exec dbms_job.run(:job1);

create table t_201604251111 as select * from Scott_Emp@db_orcl_link

PL/SQL procedure successfully completed.

 

sys@ORCL>select * from temp_table;

TABLENAME

----------------------------------------------------------------------------------------------------

t_201604251058

t_201604251111

 

sys@ORCL>select count(*) from t_201604251111;

  COUNT(*)

----------

        14

 

sys@ORCL>select JOB,LAST_DATE,NEXT_DATE,BROKEN,INTERVAL,WHAT from dba_jobs where what='p_Scott_Emp_bak;';

JOB LAST_DATE    NEXT_DATE    BROKEN      INTERVAL      WHAT

----- ----------------- ---------------------- ------------------ --------------------- -----------------

43  2016-04-25 11:11:46  2016-04-25 11:41:46  N  sysdate+30/1440  p_Scott_Emp_bak;

 

 

----后续：

sys@ORCL>select sysdate from dual;

SYSDATE

-------------------

2016-04-25 11:17:19

 

——————————————————————>>>

sys@ORCL>select sysdate from dual;

SYSDATE

-------------------

2016-04-25 13:41:18

 

sys@ORCL>select * from temp_table;

TABLENAME

----------------------------------------------------------------------------------------------------

t_201604251058

t_201604251111

t_201604251141

t_201604251211

t_201604251241

t_201604251311

6 rows selected.

 

sys@ORCL>select count(*) from t_201604251311;

  COUNT(*)

----------

        14

sys@ORCL>select JOB,LAST_DATE,NEXT_DATE,BROKEN,INTERVAL,WHAT from dba_jobs where what='p_Scott_Emp_bak;';

JOB LAST_DATE     NEXT_DATE   BROKEN   INTERVAL    WHAT

----------------------------------------------------------------------------------------------------

43  2016-04-25 13:41:55  2016-04-25 14:11:55  N  sysdate+30/1440   p_Scott_Emp_bak;

 

 

 

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