利用DBLINK同步表数据库--老刘

把10.10.17.2数据库上的TEST表定时同步到10.10.17.3数据库

1.在10.10.17.3上创建DBLINK指向10.10.17.2数据库
配置TNS信息如下:
[oracle@june3 admin]$ cat tnsnames.ora 
# tnsnames.ora Network Configuration File: /oracle/app/product/10.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

JUNE =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.17.2)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = june)
    )
  )

EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  

开始创建DBLINK
SQL> create public database link DBL_JUNE connect to test identified by test
  2  using 'june';

Database link created.

其中DBL_JUNE 为DBLINK名字

test identified by test 为10.10.17.2的数据库用户名密码

using 'june' june为TNS别名

此时在10.10.17.3上查看：


SQL> desc test.test@dbl_june
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 OWNER                                              VARCHAR2(30)
 OBJECT_NAME                                        VARCHAR2(128)
 SUBOBJECT_NAME                                     VARCHAR2(30)
 OBJECT_ID                                          NUMBER
 DATA_OBJECT_ID                                     NUMBER
 OBJECT_TYPE                                        VARCHAR2(19)
 CREATED                                            DATE
 LAST_DDL_TIME                                      DATE
 TIMESTAMP                                          VARCHAR2(19)
 STATUS                                             VARCHAR2(7)
 TEMPORARY                                          VARCHAR2(1)
 GENERATED                                          VARCHAR2(1)
 SECONDARY                                          VARCHAR2(1)
 NAMESPACE                                          NUMBER
 EDITION_NAME                                       VARCHAR2(30)

已经可以访问

2.测试脚本
sqlplus test/test<<!
drop table test purge;
create table test as select * from test.test@dbl_june;
exit
!