《终日打雁，叫雁啄了眼》– Error is 16047

DG搭建过程中一直报错：
Sat Feb 12 15:50:09 2022 PING[ARC2]: Heartbeat failed to connect to standby 'standby'. Error is 16047.
Sat Feb 12 15:51:10 2022 PING[ARC2]: Heartbeat failed to connect to standby 'standby'. Error is 16047.
Sat Feb 12 15:52:10 2022 PING[ARC2]: Heartbeat failed to connect to standby 'standby'. Error is 16047.
检查了tsname.ora
standby =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.5.89)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED

《终日打雁，叫雁啄了眼》– Error is 16047最先出现在Python成神之路。