實驗環境:
庫一：12c prodcdb1
庫二：11g rocky
1. 實驗準備：在12c版本的pdb庫prodcdb1中建立乙個普通使用者test
[oracle@host01 ~]$ . oraenv
oracle_sid = [prodcdb1] ?
prodcdb
[oracle@host01 ~]$ sqlplus / as sysdba
sql*plus: release 12.1.0.2.0 production on thu jul 12 18:48:48 2018
connected to:
oracle database 12c enterprise edition release 12.1.0.2.0 - 64bit production
sys@ prodcdb>conn sys/oracle@prodcdb1 as sysdba
sys@ prodcdb1>create user test identified by test ;
sys@ prodcdb1>alter user test account unlock;
sys@ prodcdb1>grant connect,resource to test;
sys@ prodcdb1>conn test/test@prodcdb1
2.在12c版本的pdb庫prodcdb1上，使用者test建立函式add_num
create or replace function add_num(a int, b int) return int is
v_c int;
begin
select a + b into v_c from dual;
return v_c;
end;
3.在11g版本庫rocky上面建立dblink
create database link prodcdb1
connect to test identified by test
using '(description =
(address_list =
(address = (protocol = tcp)(host = host01.example.com)(port = 1521))
)
(connect_data =
(server = dedicated)
(service_name = prodcdb1.example.com)
)
)' ;
4.在庫rocky上面呼叫庫prodcdb1使用者test下的函式add_num
儲存過程呼叫:
declare
a int:=3;
b int:=4;
v_sql varchar2(100):=null;
begin
v_sql := 'select add_num@prodcdb1(:1,:2) from dual ' ;
execute immediate v_sql using a,b;
end;
直接呼叫：
connected to oracle database 11g enterprise edition release 11.2.0.1.0
connected as sys@rocky as sysdba
sql> select add_num@prodcdb1(1,2) from dual;
add_num@prodcdb1(1,2)
---------------------
3
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