ORA-12170: TNS:Connect timeout occurred 解决思路

ORA-12170: TNS:Connect timeout occurred 解决思路
dba_lily 2018-03-06 16:26:43 11171 收藏 3
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总是有厂家反映新建的dblink有问题

source源地址:10.150.1.1(端口:1522)
destination目标地址:10.150.4.4(端口:1521)

####整体分析思路如下:

1、要求查看下创建dblink语句和tnsname.ora,确认创建语句无误

create database link ITPC
  connect to ITSMUSE identified by "szitsm!1000"
  using '(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)
  (HOST = 10.150.x.x)(PORT = 1521)))
  (CONNECT_DATA =(SERVICE_NAME = itsm2015)))';

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2、在目标地址ping和telnet源地址,确认网络连通

ping 10.150.4.4

telnet 10.150.4.4 1521

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3、根据dblink语句的信息,sqlplus远程连接目标地址命令,连接超时,应该是防火墙开通的问题

$ sqlplus ITSMUSE/'szitsm!1000'@10.150.4.4:1521/itsm2015

SQL*Plus: Release 11.2.0.4.0 Production on Tue Mar 6 14:50:21 2018

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

ERROR:
ORA-12170: TNS:Connect timeout occurred


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4、跟厂家确认防火墙是否开通,发现目标地址是SCANIP,所以目标的数据库是一个集群,因此厂家很有可能是只申请开通SCANIP的防火墙

该目标集群地址
物理IP:10.150.2.2/10.150.2.3(端口:1529)
VIP:10.150.2.4/10.150.2.5(端口:1529)
SCANIP:10.150.4.4(端口:1521)

正确的方式应该是申请两个物理IP、两个VIP和SCANIP,缺一不可:
source源地址|destination目标地址|protocol协议|port range端口
-------- | —
10.150.1.1|10.150.2.2|TCP|1529
10.150.1.1|10.150.2.3|TCP|1529
10.150.1.1|10.150.2.4|TCP|1529
10.150.1.1|10.150.2.5|TCP|1529
10.150.1.1|10.150.4.4|TCP|1521

5、最后必须在服务器里,全部能通,才算正确
telnet 10.150.2.2 1529
telnet 10.150.2.3 1529
telnet 10.150.2.4 1529
telnet 10.150.2.5 1529
telnet 10.150.4.4 1521
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版权声明:本文为CSDN博主「dba_lily」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/dba_lily/article/details/79460113

posted @ 2020-04-30 17:32  耀阳居士  阅读(5248)  评论(0编辑  收藏  举报