Using APEX_COLLECTION in a DB-Function??

Question

Hello,
in Apex I would call a PL/SQL page process (anonymous block), which invoke a database function (called A).
This db function, A, invokes a further db package via database link on a remote database.
The package on the remote database writes its result in a global temporary table (also located on the remote database).
Now, I would read the result set from the global temporary table in db function A and put it in a APEX_COLLECTION.
But it seems so, that I could only use APEX_COLLECTION directly in an anonymous pl/sql functions over the apex web-interface.
Calling the remote package und querying the remote global temporary table via database link in an anoynmous pl/sql function don´t work correctly.
Sometimes I can´t read any data of the global temporary table. Is it possible, that the database link is closed between calling the remote package and querying the remote table, although the calls happens in the same transaction (anonymous pl/sql function)?
Greetings
Michael

Answer 1

SQL> ed
Wrote file afiedt.buf
  1  WITH tbl AS (SELECT '201aaa' dt FROM DUAL UNION ALL
  2               SELECT '123bbb' dt FROM DUAL UNION ALL
  3               SELECT '567ccc' dt FROM DUAL UNION ALL
  4               SELECT 'ab123ddd' dt FROM DUAL
  5               )
  6  SELECT dt,CASE WHEN dt like '%123%' THEN 'Match'
  7         ELSE 'Not Matched'
  8         END With_case
  9        ,DECODE(REGEXP_SUBSTR(dt,'123'),NULL,'Not Match','Match')   With_Regexp
10        ,DECODE(INSTR(dt,'123'),0,'Not Match','Match') With_Instr
11        ,DECODE(REPLACE(dt,'123'),dt,'Not Match','Match') With_Replace
12* FROM tbl
SQL> /
DT       WITH_CASE   WITH_REGE WITH_INST WITH_REPL
201aaa   Not Matched Not Match Not Match Not Match
123bbb   Match       Match     Match     Match
567ccc   Not Matched Not Match Not Match Not Match
ab123ddd Match       Match     Match     MatchEdited by: Saubhik on Jul 26, 2010 5:24 AM
Edited by: Saubhik on Jul 26, 2010 5:40 AM
Edited by: Saubhik on Jul 26, 2010 5:40 AM