Any known issues with SQL DB Link Synonyms joining on encrypted columns

Question

Are there any known issues with accessing encrypted columns via a database link that is masked by a synonym?
We are experiencing unexpected results when the encrypted column is anti-joined through a not exists, to a local encrypted column of the same datatype The encrypted columns are person ids. If the expected person id is hard coded, the results return correctly. The local database is 10.2.0.4.0 and the link is to a 10.2.0.3.0 RAC.
Both enrollments and person_ids, below, are synonyms to the linked tables.
... From table_1 d
where ...
AND NOT EXISTS (SELECT 1
FROM enrollments x,
person_ids p
WHERE x.person_demo = p.person_demo
AND x.rept_inst = d.rept_inst
AND x.demo_time_frame = d.term_deg_grant
AND p.person_id_encrypted = '999999999')
vs.
... From table_1 d
where ...
AND NOT EXISTS (SELECT 1
FROM enrollments x,
person_ids p
WHERE x.person_demo = p.person_demo
AND x.rept_inst = d.rept_inst
AND x.demo_time_frame = d.term_deg_grant
AND p.person_id_encrypted = d.person_id_encrypted)

Answer 1

milazzo74 wrote:
I am having the same problem...
http://www.milazzo.com.br/teste/projetos.php
It works fine in Firefox but loads forever in explorer 8...
The cause of the problem is not the same.
In your case it takes forever to load the thumbnails from flickr.com; the SpryDataSets without the loading of the thumbnails works as expected.
Remember that ALL of the thumbnails for each 60 odd projects are downloaded from flickr, that is about 1800 thumbnails.
Gramps