FAQ
two oracle 8174 databases on one aix 4.3.3 server


database1 = CMS
database2 = HAT




In database2 (HAT)


insert a row into table card_status_log on hat


--The insert is happening directly in database2 from a
--direct sqlplus connect to the hat database.
--no link involved with insert


commit;


successful
no errors



from database1 (CMS)
--Distributed query run via sqlplus session on CMS:
SELECT

card_id,

card_status_id,
cardtype_cd,
cardstatus_cd,
card_status_reason_cd,
status_date,
user_id

FROM hat_card_status_log (synonym over a link to card_status_log table in
database2)
where card_id = 302
UNION

SELECT

card_id,
card_status_id,
cardtype_cd,
cardstatus_cd,
card_status_reason_cd,
status_date,
user_id

FROM card_outline_status_log (table in database1)
where card_id = 302;


open a sqlplus session from database1 (CMS), query for newly inserted row
from
initial insert above


new row does not show


rerun query for new row from same sqlplus session in database1


newly inserted row shows


--Remote query
running first part of the query (select to database2 without union)
shows newly created row on first attempt


work around... add hint, qualify object names:


SELECT

/*+ DRIVING_SITE(hcsl) */
hcsl.card_id,

hcsl.card_status_id,
hcsl.cardtype_cd,
hcsl.cardstatus_cd,
hcsl.card_status_reason_cd,
hcsl.status_date,
hcsl.user_id

FROM hat_card_status_log hcsl
where hcsl.card_id = 302
UNION

SELECT

csl.card_id,
csl.card_status_id,
csl.cardtype_cd,
csl.cardstatus_cd,
csl.card_status_reason_cd,
csl.status_date,
csl.user_id

FROM card_outline_status_log csl
where csl.card_id = 302;


open sqlplus session


query for newly inserted row from database1 (CMS), shows with initial query




why doesn't the first distributed query work on initial execution?


thanks


sandy, long time lurker

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postedJan 23, '03 at 8:49p
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