System.OutOfMemoryException Oracle.DataAccess.Client.OracleParameter

Question

Hi , nt
I am working on a legacy system where the end users reported exception while loading a page. This is developend in ASP.NET 2.0 and Oracle.DataAccess. The exception is not reproducible in any of the staging or development serves, and is not consistent.ie sometime works and sometiem not. The exception is as follows,
System.OutOfMemoryException: Insufficient memory to continue the execution of the program. at System.Runtime.InteropServices.Marshal.AllocCoTaskMem(Int32 cb) at Oracle.DataAccess.Client.OracleParameter.PreBind_Char() at Oracle.DataAccess.Client.OracleParameter.PreBind(OracleConnection conn, IntPtr errCtx, Int32 arraySize) at Oracle.DataAccess.Client.OracleCommand.ExecuteNonQuery()
The way it calls in the data access layes are as follows, removed some parameters to just to get flow clear,
public void GetXXXData    (
      UserCredentials credentials
      , decimal? P_IN_ID
      , string P_IN_TYPE
      , out string[] P_OUT_XX_ID
      , out string[] P_OUT_XX_NAME
     , int? outputArrayLength
     if (outputArrayLength == null)
        outputArrayLength = 3000; 
      OdacCmd cmd = null;   
      P_OUT_XX_ID = null;
      P_OUT_XX_NAME = null;
      cmd = OdacFactory.CreateCommand("PK_XX_QAS1.pr_xx_data_q", credentials);
      cmd.AddParam("P_IN_ID", P_IN_ID);
      cmd.AddParam("P_IN_QUAL_TYPE", P_IN_TYPE);
      IDataParameter param_P_OUT_XX_ID = cmd.AddOutputParameterString("P_OUT_XX_ID", outputArrayLength.Value);
      IDataParameter param_P_OUT_XX_NAME = cmd.AddOutputParameterString("P_OUT_XX_NAME", outputArrayLength.Value);
       cmd.ExecuteNonQuery();
        P_OUT_XX_ID = OdacFactory.GetStringArray(param_P_OUT_XX_ID.Value);
        P_OUT_XX_NAME = OdacFactory.GetStringArray(param_P_OUT_XX_NAME.Value);
Any help on this is greatly apprecitaed
-Jyothish George

Answer 1

What version of the client / odp.net are you using?
I took your code and pretty much pasted it into Visual Studio Express:
Module Module1
  Sub Main()
    TestOracle()
    TestMicrosoft()
  End Sub
  Private Sub TestOracle()
    Dim builder As New Oracle.DataAccess.Client.OracleConnectionStringBuilder
    builder.DataSource = "lt10gr2"
    builder.UserID = "scott"
    builder.Password = "tiger"
    Dim oraConn As Oracle.DataAccess.Client.OracleConnection = New Oracle.DataAccess.Client.OracleConnection(builder.ConnectionString)
    Dim oraCMD As New Oracle.DataAccess.Client.OracleCommand("SELECT empno, ename FROM emp", oraConn)
    Dim MyDA As New Oracle.DataAccess.Client.OracleDataAdapter(oraCMD)
    Dim ds As New DataSet
    MyDA.Fill(ds)
  End Sub
  Private Sub TestMicrosoft()
    Dim builder As New System.Data.OracleClient.OracleConnectionStringBuilder
    builder.DataSource = "lt10gr2"
    builder.UserID = "scott"
    builder.Password = "tiger"
    Dim oraConn As System.Data.OracleClient.OracleConnection = New System.Data.OracleClient.OracleConnection(builder.ConnectionString)
    Dim oraCMD As New System.Data.OracleClient.OracleCommand("SELECT empno, ename FROM emp", oraConn)
    Dim MyDA As New System.Data.OracleClient.OracleDataAdapter(oraCMD)
    Dim ds As New DataSet
    MyDA.Fill(ds)
  End Sub
End ModuleIt ran with no errors on my system.
C:\>gacutil /l | find "Oracle.DataAccess"
  Oracle.DataAccess, Version=2.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=x86- Mark