Oracle ASP.NET:TNS问题
题
我试图通过ASP.NET/C#连接到我的DB Oracle。
这是我的代码:
OracleConnection connection = new OracleConnection();
connection.ConnectionString = @"Data Source=ORACLEDB;User id=me;Password=xxxx;";
try
{
connection.Open();
}
catch (Exception ex)
{
Console.WriteLine("Exception occurs when connecting to DB : " + ex.Message + ex.StackTrace);
}
这是我遇到的错误:
ORA-12154: TNS : the identifier could not be solved
这是我的tnsnames.ora:
ORACLEDB =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = myComputer.myDomain)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORACLEDB)
)
)
我在Win2K3服务器R2上工作。
Oracle在同一家服务器上。是Oracle 11G。
当我进行TNSPAING时,我明白了:
EZCONNECT adapter used to resolved the alias
Tentative de contact de (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTOCOL=TCP)(HOST=169.254.216.123)(PORT=1521)))
OK (20 msec)
这是我的听众。ora:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = myComputer.myDomain)(PORT = 1521))
)
)
解决方案
将字符串连接放在web.config:
<connectionStrings>
<add name="OracleDatabase"
connectionString="Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME= ORACLEDB)));User Id= me;Password= xxx;Persist Security Info=True;"
providerName="System.Data.OracleClient" />
</connectionStrings>
然后从web.config获取连接字符串:
connection.ConnectionString = ConfigurationManager.ConnectionStrings["OracleDatabase"].ConnectionString;
其他提示
尝试使用TNSPing诊断您的问题。这是在您的Oracle Home/bin目录中找到的实用程序。
EZCONNECT适配器是什么?也许tnsping和您的代码正在使用不同的驱动程序?
尝试在代码中的连接字符串中使用数据库的IP地址。这可能会向您展示导致问题的原因。
当我尝试将myComputer.mydomain用作我的连接字符串中的数据源时,它给出了错误代码
ORA-12504 : TNS : the listener processus didn't obtain SERVICE_NAME in CONNECT_DATA
.
idk是什么ezconnect :-)
命令tnsping localhost给出了这一点:
C:\app\Administrator\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Adaptateur TNSNAMES utilisé pour la résolution de l'alias
Tentative de contact de (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = myComputer.myDomain)(PORT = 1521)) (CONNECT_DATA = (SERVICE_NAME = ORACLEDB)))
OK (20 msec)
也许可以帮助:当我尝试使用SQL Plus连接DB时,它可以正常工作...
非常感谢你的帮助。
不隶属于 StackOverflow