ORA-06550：第1行，第37列：PLS-00201：必须声明标识符“ XYZ”

Question

When i try to access and excute a store procedure through following C# code Here is my C# code

   OracleParameter op = null;
   OracleDataReader dr = null;

   OracleCommand cmd = new OracleCommand();

   cmd.CommandText = "pkg_prov_index.getNextPanel";
   cmd.CommandType = CommandType.StoredProcedure;


  op = new OracleParameter("pCurrentPanelId", OracleDbType.Int32);
  op.Direction = ParameterDirection.Input;
  op.Value = masterProviderIndex.CurrentPanelId;
  cmd.Parameters.Add(op);
  op = new OracleParameter("pRefCursor", OracleDbType.RefCursor);
  op.Direction = ParameterDirection.inputOutput;
  cmd.Parameters.Add(op);
  dr =cmd.ExecuteReader(); Here , it gives me an error that says ORA-06550: line 1,   column 37: PLS-00201: identifier 'XYZ' must be declared at 
  if(dr.HasRows)
  {while(dr.Read())
     {
     }
  }

I do have the permissions to access and execute the stored procedure so no issues with that. And when I opened and saw the Stored Procedure in Sql Developer it has an input and output cursor(input cursor is there for reading so many columns as SP is just nothing but a select statement along with a where clause on a View which is written involving 5 tables together and then output cursor is for writing the output result of that SP).Thats what my understanding of cursor is ..since I'm a .Net guy not an oracle expert.Now coming back to the most important point. If you guys look in to my code for input/output cursor all I get is oracledbtype.refcursor in C# enumeration for oracledbtype but the oracle SP is using an input/ouput cursor, is this the root of my error, because I'm sending an input/output parameter as refcursor whereas oracle SP has input/output cursor not a refcursor, but refcursor is all I get when writing code using C#. Your help will be much appreciated. Thanks.

Answer 1

Before the CommandText You should try giving a name to the procedure like this:

OracleCommand cmd = new OracleCommand("getNextPanel", _conn);

The parameter OracleParameter must match exactly the parameter name(not only the type) when you call it by CommandType.StoredProcedure

Why is there cmd.Parameters.Add(op); going twice? Also, op.Direction = ParameterDirection.inputOutput; the "i" letter must be upper cased (probably typo).

The steps given is taken by a working example which I developed, following these steps: Calling Oracle stored procedure from C#?