Heirarchical query...inside another to get connect_by_root

Question

Given the following table:
CREATE TABLE TEST_HIERARCHY
CREATE TABLE TEST_HIERARCHY
UDL_GUID INTEGER,
DESCRIPTION VARCHAR2(50),
PARENT_UDL_GUID INTEGER,
CONSTRAINT TEST_HIERARCHY_PK
PRIMARY KEY
(UDL_GUID)
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(1, 'Parent 1', NULL);
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(2, 'Child 1', 1);
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(3, 'Child 2', 2);
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(4, 'Child 3', 2);
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(5, 'Parent 2', NULL);
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(6, 'Child 4', 5);
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(7, 'child 5', 5);
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(8, 'child 6', 7);
Insert into TEST_HIERARCHY
(UDL_GUID, DESCRIPTION, PARENT_UDL_GUID)
Values
(9, 'child 7', 7);
COMMIT;
And running the following SELECT:
select level, description, udl_guid, parent_udl_guid
from test_hierarchy
start with parent_udl_guid in (
select distinct
connect_by_root udl_guid from test_hierarchy
where udl_guid in( 8, 4)
start with parent_udl_guid is null
connect by prior udl_guid = parent_udl_guid
connect by prior udl_guid = parent_udl_guid
I get this error:
ORA-00600: internal error code, arguments: [qctcte1], [0], [], [], [], [], [], []
I'm guessing this isn't allowed or this is a bug?
What we're trying to do is....users get a list of items to be 'assigned' to a vehicle for transport. If an item is part of a parent child relationship (ie- a crate containing boxes of other items) then we need to ask the user if they want to bring along everything that is linked or nothing at all (no in between, all or nothing). So what I'm trying to do is get a statement that allows you to specify the items that were selected, and pull a result set of the entire heirarchy (or heirarchies) that the selected items are part of.
So the above inserts get you:
Parent 1
-- child 1
-- -- child 2
-- -- child 3
parent 2
-- child 4
-- child 5
-- -- child 6
-- -- child 7
So if a user were to select child 5 and 7, they would get the whole parent 2 hierarchy. If they select 7 and 2, they would get both parent 1 and 2's hierarchy. (I know the above columns listed are not guids, I had to dumb this down for myself so I could follow who was chasing who. Integers are so much easier)
Searching metalink didn't get me any obvious results. I can run either query by itself and get results. I can even run a subquery for the main hierarchical query which is a normal SELECT. Oracle falls apart when trying to process them both.
Anybody see a different way to do this? This is 10gR2 running on RHEL4. Thanks.

Answer 1

ora-600's should always be checked against metalink
https://metalink.oracle.com/metalink/plsql/f?p=130:14:3038746456038321058::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,248095.1,1,0,1,helvetica
also, it works fine for me
SQL> select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Prod
PL/SQL Release 10.1.0.2.0 - Production
CORE    10.1.0.2.0      Production
TNS for 32-bit Windows: Version 10.1.0.2.0 - Production
NLSRTL Version 10.1.0.2.0 - Production
5 rows selected.
SQL> select level, description, udl_guid, parent_udl_guid
  2  from test_hierarchy
  3  start with parent_udl_guid in (
  4  select distinct
  5  connect_by_root udl_guid from test_hierarchy
  6  where udl_guid in( 8, 4)
  7  start with parent_udl_guid is null
  8  connect by prior udl_guid = parent_udl_guid
  9  )
10  connect by prior udl_guid = parent_udl_guid
11  /
     LEVEL DESCRIPTION                                          UDL_GUID PARENT_UDL_GUID
         1 Child 1                                                     2               1
         2 Child 2                                                     3               2
         2 Child 3                                                     4               2
         1 Child 4                                                     6               5
         1 child 5                                                     7               5
         2 child 6                                                     8               7
         2 child 7                                                     9               7
7 rows selected.