客戶端通過SCAN TNS無法連線ORA-12545

tns:
toyy3_scan =(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL= TCP)(HOST= 10.19.243.28)(PORT=1521)))(CONNECT_DATA =(SERVICE_NAME = orayy3)))

[oracle@c4yybcv3] /oracle/app/oracle/product/11.2.0/dbhome_1/network/admin> sqlplus hurp/hurp@toyy3_scan


SQL*Plus: Release 11.2.0.3.0 Production on Tue May 26 09:48:27 2015


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ERROR:
ORA-12545: Connect failed because target host or object does not exist
客戶端需要填加服務的VIP資訊
vi /etc/hosts
##vip
10.19.243.24  toyy3a_cs-vip
10.19.243.26  toyy3b_cs-vip 

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