带你轻松接触Oracle DBLink的简单运用
在这个示例中，我们首先做了一个例子，目的是实现以上要求.
首先进行适当授权：
[Oracle@jumper oracle]$ sqlplus "/ as sysdba" SQL*Plus: Release 9.2.0.4.0 - Production on Tue Nov 7 21:07:56 2006 Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved. Connected to: Oracle9i EntERPrise Edition Release 9.2.0.4.0 - Production With the Partitioning option JServer Release 9.2.0.4.0 - Production SQL> grant create public database link to eygle; Grant succeeded. SQL> grant all on dbms_flashback to eygle; Grant succeeded. |
然后建立DB Link:
SQL> connect eygle/eygle Connected. SQL> create public database link hsbill using 'hsbill'; Database link created. SQL> select db_link from dba_db_links; DB_LINK --------------------------------------------------- HSBILL SQL> select * from dual@hsbill; D - X |
在此之后我们可以尝试使用DB Link进行远程和本地
执行:
SQL> set serveroutput on
SQL> set feedback off
SQL> declare
2 r_gname varchar2(40);
3 l_gname varchar2(40);
4 begin
5 execute immediate
6 'select GLOBAL_NAME from global_name@hsbill' into r_gname;
7 dbms_output.put_line('gname of remote:'||r_gname);
8 select GLOBAL_NAME into l_gname from global_name;
9 dbms_output.put_line('gname of locald:'||l_gname);
10 end;
11 /
gname of remote:HSBILL.HURRAY.COM.CN
gname of locald:EYGLE
远程Package或Function调用也可以随之实现:
SQL> declare
2 r_scn number;
3 l_scn number;
4 begin
5 execute immediate
6 'select dbms_flashback.GET_SYSTEM_CHANGE_NUMBER@hsbill from dual' into r_scn;
7 dbms_output.put_line('scn of remote:'||r_scn);
8 end;
9 /
scn of remote:18992092687
SQL>
-The End-
|
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