c# - C#中的Oracle Clob的"ORA-01036: illegal variable name/number\n"

当我尝试在C#中使用clob输入和输出创建oracle存储过程调用时，出现以下错误:

ORA-01036: illegal variable name/number\n

这是代码本身:

OracleTransaction transaction = connection.BeginTransaction();
OracleCommand command = connection.CreateCommand();
command.Transaction = transaction;
command.CommandText =
      @"declare xx clob;
      begin dbms_lob.createtemporary(xx, false, 0);
      :tempclob := xx; end;";

command.Parameters.Add(new OracleParameter("tempclob", OracleType.Clob))
    .Direction = ParameterDirection.Output;

command.ExecuteNonQuery();

OracleLob tempLob = (OracleLob)command.Parameters[0].Value;
//byte[] tempbuff = new byte[10000];
byte[] tempbuff = System.Text.Encoding.Unicode.GetBytes(generateXMLMessage());

tempLob.BeginBatch(OracleLobOpenMode.ReadWrite);
tempLob.Write(tempbuff, 0, tempbuff.Length);
tempLob.EndBatch();
command.Parameters.Clear();
command.CommandText = "InsertMessageAndGetResponseWRP";
command.CommandType = CommandType.StoredProcedure;
//command.Parameters
//.Add(new OracleParameter("ImportDoc", OracleType.Blob)).Value = tempLob;
command.Parameters.Add(new OracleParameter("iSourceSystem", OracleType.VarChar))
       .Value = "XXX";

command.Parameters.Add(new OracleParameter("iMessage", OracleType.Clob))
       .Value = tempLob;


command.Parameters.Add(new OracleParameter("iResponseMessage", OracleType.Clob)).Direction = ParameterDirection.Output;
command.Parameters.Add(new OracleParameter("retVar ", OracleType.Int32)).Direction = ParameterDirection.Output;

command.ExecuteNonQuery();
transaction.Commit();

最佳答案

你试一试

command.CommandText =
      @"declare xx clob;
      begin dbms_lob.createtemporary(xx, false, 0);
      tempclob := xx; end;";

用:tempclob替换tempclob。