從.net連接到oracle數據庫時出錯

Question

我正在使用System.data.oracleclient命名空間，並將該dll放在我的項目中

我用連接字符串作為

SERVER=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxx.xx.x.xxx)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=xxxx)));uid=xxxx;pwd=xxxx;

在運行應用程序時，我收到響應消息為

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

我不知道我在哪里卡住...

任何人都可以為我提供解決此問題的任何指導方針。

我也瞥了一眼，但沒有得到正確的解決方案。

等待您的寶貴建議和意見

更新1：

我使用的代碼是

   con = new OracleConnection(conStr);
                con.Open(); // connection must be openned for command
                query = "insert into table1 values ('ss');
                cmd = new OracleCommand(query, con);
               if(cmd.ExecuteNonQuery()>0)
                {
                    Console.WriteLine("insert sucess!");
                }
                con.Close();

我的堆棧跟蹤錯誤是

   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.getconnection() in D:\oracle\oracletst[via-oracleclient]\oracletst\Program.cs:line 29
   at oracleTest.Program.Main(String[] args) in D:\oracle\oracletst[via-oracleclient]\oracletst\Program.cs:line 21
   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()

Answer 1

我看到的2件事可能是導致問題的原因

1. 您沒有處置ado.net對象
2. con ＆ cmd似乎是一個共享變量。

試試這個，看看問題是否仍然存在。

using(var con = new OracleConnection(conStr))
using(var cmd = con.CreateCommand())
{
    con.Open(); 
    cmd.CommandText = "insert into table1 values ('ss');
    if(cmd.ExecuteNonQuery() > 0)
    {
        Console.WriteLine("insert sucess!");
    }
}

因為我們使用的是using關鍵字，所以當該塊退出時，它將自動調用con / cmd.Dispose（）。 Dispose（）將自動調用Close（）。

編輯以確保您的連接字符串格式正確。 http://www.connectionstrings.com/oracle