Debugging of Oracle collections (table of records or record type) doesn't work properly. At this moment even using the last version released (9.0.6) this issue happens the same.
Please see this sample (in debugging and stepping into) at the moment of viewing the content of a particular field of the mio_record record the popup shows

I don't see your example, but you can only view individual record fields. You cannot view "mio_record" as a whole, but you can view "mio_record.field1".

We miss this feature big time! It could be VERY nice if you were able to view contents of records and collections during debug

It is possible in Oracle's tool called SQL Developer ..... so it can be done.

6 months later I dig out this topic.

It would be *lovely* to inspect a collection tree from the debugger watched variables.

It's by far the feature I miss the most in plsqldev (And not only me).

ooo yes, I need/want this too!