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我有一个使用 System.Data.OracleClient 访问 oracle 数据库的 C# 程序。

该代码使用 OracleCommand、Dataset 对象。

命令结构如下

con = new OracleConnection(conStr);
con.Open();
OracleDataAdapter adp = new OracleDataAdapter("select * from sample", con);
DataSet ds = new DataSet();
adp.Fill(ds);
DataTable dt = ds.Tables[0];
con.Close();

和初始化值为

 public static String conStr = "SERVER=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=******)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=******)));uid=#####;pwd=#######;";
private OracleConnection con;
private String query;
private OracleCommand cmd;
private OracleDataReader rd;

和

我收到错误

堆栈跟踪：

  at System.Data.OracleClient.OciHandle..ctor(OciHandle parentHandle, HTYPE handleType, MODE ocimode, HANDLEFLAG handleflags)
   at System.Data.OracleClient.OracleInternalConnection.OpenOnLocalTransaction(String userName, String password, String serverName, Boolean integratedSecurity, Boolean unicode, Boolean omitOracleConnectionName)
   at System.Data.OracleClient.OracleInternalConnection..ctor(OracleConnectionString connectionOptions)
   at System.Data.OracleClient.OracleConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
   at System.Data.OracleClient.OracleConnection.Open()
   at oracleTest.Program.showdata() in D:\oracle\oracletst[via-oracleclient]\oracletst\Program.cs:line 43
   at oracleTest.Program.Main(String[] args) in D:\oracle\oracletst[via-oracleclient]\oracletst\Program.cs:line 22
   at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

目标站点：

{Void .ctor(System.Data.OracleClient.OciHandle, HTYPE, MODE, HANDLEFLAG)}

信息 ：

OCIEnvCreate failed with return code -1 but error message text was not available.

我不知道我被困在哪里了。

我正在使用 oracle 10g 和 dotnet 2010。

等待您的宝贵回复和意见......

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