你tnsping 一下能互通，说明能链接起，只是执行了一段时间后报错的，估计应该是网络配置问题ORA-12170 TNS:Connect timeout occurredCause: The server shut down because connection establishment or communication with a client failed to complete within the allotted time interval. This may be a result of network or system delays; or this may indicate that a malicious client is trying to cause a Denial of Service attack on the server.Action: If the error occurred because of a slow network or system, reconfigure one or all of the parameters SQLNET.INBOUND_CONNECT_TIMEOUT, SQLNET.SEND_TIMEOUT, SQLNET.RECV_TIMEOUT in sqlnet.ora to larger values. If a malicious client is suspected, use the address in sqlnet.log to identify the source and restrict access. Note that logged addresses may not be reliable as they can be forged (e.g. in TCP/IP).
我想dblink 應該跟 oracle 版本沒有關係,或許是什麼地方設定有問題
A、B兩台服務器 sqlnet.ora 都只有一行
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)從字面意思看SQLNET.INBOUND_CONNECT_TIMEOUT参数 應該是設定在C服務器上吧
請問 SQLNET.INBOUND_CONNECT_TIMEOUT参数 設定多大比較合適？A、B服務器在同一個局域網，如果是網絡慢問題 B可以，A不行就比較奇怪了
http://junfengwang060905.blog.163.com/blog/static/9422333020091171916663/
http://www.examer.cn/html/oraclecuowu12170/oracle+%E9%94%99%E8%AF%AF+12170.html
謝謝提供資料！
我的C服務器使用客戶端、sqlplus連接都沒有問題，就是在A服務器用dblink 連接時才會出現ORA-12170錯誤
难道是linux 64位的需要其他配置或者什么的？ 不会吧，不是很清楚了这个。你试试采用所提供的那些方法做下相应的配置呢
希望大家指點！
create database link linkfwq
connect to fzept identified by neu
using '(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.142.202.12)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = fjept)
)
)'
在A服務器裡面使用sqlplus 執行select * from tablename@dblink沒有問題
但在客戶端電腦使用sqlplus 執行select * from tablename@dblink 卻提示 ORA-12170: TNS: 發生連線逾時非常不解，請各位大大提點！