（原創）配置tnsname是個十分輕易的問題，沒什么好說的，以前也從來沒有錯過，不過今天配置的時候出了兩個小問題（這兩個問題是用GUI配置時不會出的，我覺得Java啟動太慢，手工配置tnsname.ora時出現的）C:>tnsping 100 TNS Ping Utility for 32-bit Windows: Version 9.2.0.1.0 - ProdUCtion on 15-OCT-2004 12:38:38Copyright (c) 1997 Oracle Corporation.; All rights reserved.Used parameter files:F:oracleora92networkadmin qlnet.oraUsed HOSTNAME adapter to resolve the aliasAttempting to contact (DESCRIPTION=(CONNECT_DATA=(SID=*)(SERVICE_NAME=100))(ADDRESS=(PROTOCOL=TCP)(HOST=100)(PORT=1521)))TNS-12541: TNS:no listener查看Server端的監聽,lsnrctl status，結果正常查看tnsname.ora100 = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.6.100)(PORT = 1521)) ) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = oracas) ) )完全正確....*******************************************************************或者是C:>tnsping 226TNS Ping Utility for 32-bit Windows: Version 9.2.0.1.0 - Production on 15-OCT-2004 12:40:12Copyright (c) 1997 Oracle Corporation.; All rights reserved.Used parameter files:F:oracleora92networkadmin qlnet.oraTNS-03505: Failed to resolve name(意思是不存在226在文件tnsname.ora中)查看tnsname.ora226 =; (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.6.226)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = oracas) ) )完全正確...最后分析出導致上述兩個問題的原因都是應為tns前面多了一個空格。。。。。。寒，居然是這種錯誤...所以大家配置的時候小心細節問題