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create database link aml_cust
connect to aml_basic identified by aml_basic
using '(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL = TCP)(HOST = 192.168.200.110)(PORT = 1521)))(CONNECT_DATA =(SERVICE_NAME = orcl)))';
aml_cust : 表示dblink名字
aml_basic :表示 远程数据库的用户
aml_basic: 表示远程数据库的密码
HOST = 192.168.200.110 : 表示远程数据库IP
PORT = 1521 : 表示远程数据库端口
SERVICE_NAME = orcl : 远程数据库的实例名
查询语句:
select * from TD00_CUST@aml_cust;
--删除DBLINK
DROP DATABASE LINK aml_cust;
--或
DROP PUBLIC DATABASE LINK aml_cust;
查询DBLINK信息
select * from dba_db_links;
select owner,object_name from dba_objects where object_type='DATABASE LINK';
select * from ALL_DB_LINKS;
--查询出BLOB字段的值,放入到别的表中
insert into ACT_GE_BYTEARRAY select * from ACT_GE_BYTEARRAY@aml_flow_list ;