On Thu, May 14, 2020 at 4:05 PM Michael Paquier <michael@xxxxxxxxxxx> wrote:
On Thu, May 14, 2020 at 03:38:24PM +0800, Andy Fan wrote:
> I want to know what happens been done for an uncommitted prepared
> transaction with pg_waldump, however I can't find it.
>
> demo=*# prepare transaction 's';
> PREPARE TRANSACTION
> demo=# insert into mm select generate_series(1, 1000);
> INSERT 0 1000
>
> I can get the log for "prepared command" only, but nothing was found for
> the insert statement. what should I do?
Because in your previous sequence you inserted the data after
preparing the transaction and they are part of a completely different
transaction, no?
Thanks, actually I don't know how to use prepared transaction and how it works.
I care about this because there is a long prepared transaction exists in our customer,
and we want to know what this transaction has done（like any data it changed).
All the things I know is the data comes from pg_prepared_xact, but it doesn't help a lot.
Best Regards
Andy Fan
