oracle+dg+异地dg

异地DG是从DG同步数据老是会断不会再连了是不是配置有问题？

DG报错误如下：

Mon Jul 22 16:39:54 2019

RFS[8]: Assigned to RFS process (PID:14867)

RFS[8]: Possible network disconnect with primary database

Mon Jul 22 17:46:15 2019

RFS[7]: Possible network disconnect with primary database

Mon Jul 22 17:56:21 2019

RFS[6]: Possible network disconnect with primary database

DG状态：

SQL> select process,status,sequence# from v$managed_standby; 

PROCESS   STATUS        SEQUENCE#

--------- ------------ ----------

ARCH      CONNECTED             0

ARCH      CONNECTED             0

ARCH      CONNECTED             0

ARCH      CONNECTED             0

MRP0      WAIT_FOR_LOG       2424