On DB2 EEE v8.2 on Linux/Windows/Unix, is there any
catalog view that I can query with SQL to find tablespace-state?
The state is not visible via SYSCAT.TABLESPACES.
The state is visible by parsing the output of command "list
tablespaces".
The state is visible via a snapshot view.
BUT the question is whether there is any SQL-query on the catalog (not
snapshot views) that gives the tablespace-state information ?

Here is the SQL query that may work for you using snapshot table
function as:

select tablespace_name, tablespace_state from table(
snapshot_tbs_cfg(<your_database_name>, <partition_number>)) s

I see no reason you should be restricted by only using the system
catalog views from SQL.

Regards,
-Eugene

Thanks, I already knew about the snapshot technique, as
per my original posting, however that is only applicable
if you have a database on which db2updv8 has been
run. I have subsequently learned that the answer
to my question for currently released versions of DB2
is that there are only the two methods that I mentioned
in the original posting to achieve what i needed.
So be it.

AFAK, the SQL snapshot tabe functions were available since V8.1, but in
your original message you mentioned you have V8.2 LUW, that's why I
assumed you coud use them including snapshot_tbs_cfg() in your case.

Regards,
-Eugene