利用OracleDBLink进展表同步

利用OracleDBLink进行表同步

场景:从ORACLE A? 同步表到ORACLE B

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一、创建database link(B端)

create public database link dblink_name connect to A_user_name identified by A_user_password using '(DESCRIPTION =    (ADDRESS_LIST =      (ADDRESS = (PROTOCOL = TCP)(HOST = aa.bb.com)(PORT = 1521))    )    (CONNECT_DATA =      (SERVICE_NAME = orcl)    )  )';

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二、创建snapshot(B端)

Create snapshot tb_name as select * from tb_name@dblink_name;

三、修改snapshot刷新时间(B端)

Alter snapshot tb_name refresh complete Start with sysdate next trunc(sysdate+1)+20/24;--每天20点刷新

要手动刷新的话

dbms_refresh.refresh('"B"."TB_NAME"');

?查看最后一次刷新时间

SELECT NAME,LAST_REFRESH FROM ALL_SNAPSHOT_REFRESH_TIMES;

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