Re: Huge shared hit for small table

I think we have a winner.  I looked in and found a process that was 'idle in transaction' for a couple days - and once
Ikilled it, query performance went back to normal.
 

Thank you all for the very quick responses on this.

On 11/4/19, 3:41 PM, "Peter Geoghegan" <pg@bowt.ie> wrote:

    On Mon, Nov 4, 2019 at 12:38 PM Scott Rankin <srankin@motus.com> wrote:
    > Definitely no long-running transactions on this table; in fact, this table is pretty infrequently updated – on
theorder of a few tens of rows updated per day.
 

    But a long running transaction will have an impact on all tables --
    not just the tables that happen to have been accessed so far in the
    long running transaction. This is necessary because nothing stops the
    long running transaction from SELECTing data from any table at any
    time -- we need to pessimistically keep around the data required to
    make that work.

    --
    Peter Geoghegan



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