On 14 September 2017 at 13:35, milist ujang <ujang.mil...@gmail.com> wrote:

> HI list,
>
> I have a database with bdr environment which keep alerting these messages
> in log file:
>
> HINT:  Close open transactions soon to avoid wraparound problems.
> WARNING:  oldest xmin is far in the past
>

Do you have any idle/old replication slots, perhaps from failed node joins
or abandoned nodes not properly parted?

SELECT *
FROM pg_replication_slots;

Also check

SELECT oid,*
FROM pg_database;


-- 
 Craig Ringer                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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