In the debugger, when I rightclick on an array and then chose "view collection variable" pl/sql developer freezes. The array is of a schema level defined type.

Can you let me know your PL/SQL Developer version? Can you also let me know the definition of the array?

Oops, I slept on that one. But the Problem ist still there. I have Pl/SQL Developer 5.1.6.747 and it happens with all varrays (I Think), like a schema level defined "VARRAY(2147483647) OF NUMBER";

I the array defined within a package or through a "create or replace object" statement?

The Array is defined with:
CREATE OR REPLACE TYPE AR_NUM AS VARRAY(2147483647) OF NUMBER;
It shows up in pl/sql Developer in the "Types" Folder

Works fine for me. What is your server version?

This happens on Oracle 9.2.0.4
I am quite positive, that it happened on older versions as well. On Windows Nt Server and on Linux Machines. In Fact i have never seen it Working, except for PL/SQL Tables.

Where you able to reproduce the bug yet?

Not yet. It's quite odd that you have had this problem on various platforms / versions, and that we cannot reproduce it.

Seems odd, yes. I just tried a simple test case and the Problem is non existant then. I will try to find what breaks it.