Anonymous PL/SQL . Illegal variable Name/number.

Question

Hi
I have tested ODP.NET in ASP.NET for upload images. But when read back from DB then save image to local drive. When I tested given sample code working fine. But when I modify code only select statment in PL/SQL it gives error.
Following statment is the error. Illegal variable Name/number. Pl.
advice me what need to change.
Dim block As String = " BEGIN " & _
" SELECT Ad_Image into :2 from Printmedia WHERE Product_ID = " + ProdID + ";" & _
" end ;"

Answer 1

You use bind variables. Great!
And then you do not use bind variables. Bummer!!
Why can you make the output from the SQL a bind variable, but you do not supply Product ID as a bind variable? This causes a unique and non-sharable SQL statement in the SQL Shared Pool. Where the emphasis is very obvious - shared SQL.
The definition should be something like this:
Dim block As String = "BEGIN SELECT Ad_Image into :1 from Printmedia WHERE Product_ID = :2; END;"But why are you using an anonymous PL/SQL block and a bind variable to get to the image? Deal with it as a cursor. Much easier. E.g.
Dim cursorSQL As String = "SELECT Ad_Image FROM Printmedia WHERE Product_ID = :1"Open the cursor. And there you have the resulting image column as a result.