[sql]

PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:43:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:44:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:45:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:46:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:47:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:48:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:49:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:50:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:51:27 2017
Starting background process SMCO
Thu Jan 12 14:51:27 2017
SMCO started with pid=26, OS id=8140
Thu Jan 12 14:51:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:52:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.
Thu Jan 12 14:53:27 2017
PING[ARC1]: Heartbeat failed to connect to standby ‘stdb’. Error is 16047.

[/sql]

仔细检查以下（参考资料http://dbaforums.org/oracle/index.php?showtopic=7108）：

[sql]

*.db_name=’ahdb’
*.db_unique_name=’ahdb2′
*.FAL_CLIENT=’orcl’
*.FAL_SERVER=’stdb’
*.instance_name=’stdb’
*.log_archive_config=’DG_CONFIG=(orcl,stdb)’
*.log_archive_dest_1=’location=/orabackup/archivelog/ valid_for=(ONLINE_LOGFILE,ALL_ROLES) db_unique_name=stdb’
*.log_archive_dest_2=’location=/oradata/standby_log valid_for=(STANDBY_LOGFILE,STANDBY_ROLE) db_unique_name=stdb’
*.log_archive_dest_3=’service=orcl lgwr affirm db_unique_name=orcl valid_for=(all_logfiles,primary_role)’
*.LOG_ARCHIVE_DEST_STATE_1=’ENABLE’
*.LOG_ARCHIVE_DEST_STATE_2=’ENABLE’

[/sql]