On 02/22/2017 04:51 AM, Thomas Güttler wrote:
I have other concerns: atomar transaction. Movement should happen
completely or not all.
I don't think you can do this reliable (atomic transaction) with
"copy table_name".
You can if you wrap it in a transaction:
I want to **move** the data. The data should get deleted on the
satellite after transfer.
Well the replication suggestion is out.
I don't know how to delete the data which was copied, since inserts can
happen during the copy statement.
However you end up doing this I think you will probably need some sort
of flag on the rows on the satellites. It could be a timestamp field of
when the rows where inserted on the satellite or a boolean
field(copied). First instinct is to use an insert timestamp and a
tracking table that stores the last timestamp used to move rows, where
the timestamp is only written on a successful transfer. To improve the
chances of successful transfer more smaller transfer batches rather then
larger transfers.
Regards,
Thomas Güttler
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Adrian Klaver
adrian.klaver@xxxxxxxxxxx
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