On Jun 30, 2014, at 1:15 PM, Andres Freund <and...@2ndquadrant.com> wrote:

> On 2014-06-30 12:57:56 -0700, Jeff Frost wrote:
>> 
>> On Jun 30, 2014, at 12:54 PM, Matheus de Oliveira 
>> <matioli.math...@gmail.com> wrote:
>> 
>>> 
>>> On Mon, Jun 30, 2014 at 4:42 PM, Jeff Frost <j...@pgexperts.com> wrote:
>>> And if you go fishing in pg_class for any of the oids, you don't find 
>>> anything:
>>> 
>>> That is probably because you are connected in the wrong database. Once you 
>>> connect to the database of interest, you don't even need to query pg_class, 
>>> just cast relation attribute to regclass:
>>> 
>>>    SELECT relation::regclass, ...
>>>    FROM pg_locks WHERE database = (SELECT oid FROM pg_database WHERE 
>>> datname = current_database());
>>> 
>> 
>> Yah, i thought about that too, but verified I am in the correct DB.  Just 
>> for clarity sake:
> 
> So these are probably relations created in uncommitted
> transactions. Possibly ON COMMIT DROP temp tables?


That would make sense.  There are definitely quite a few of those being used.

Another item of note is the system catalogs are quite bloated:

 schemaname |  tablename   | tbloat | wastedmb | idxbloat | wastedidxmb
------------+--------------+--------+----------+----------+-------------
 pg_catalog | pg_attribute |   3945 |   106.51 |     2770 |      611.28
 pg_catalog | pg_class     |   8940 |    45.26 |     4420 |       47.89
 pg_catalog | pg_type      |   4921 |    18.45 |     5850 |       81.16
 pg_catalog | pg_depend    |    933 |    10.23 |    11730 |      274.37
 pg_catalog | pg_index     |   3429 |     8.36 |     3920 |       24.24
 pg_catalog | pg_shdepend  |    983 |     2.67 |     9360 |       30.56
(6 rows)

Would that cause the replica to spin on StandbyReleaseLocks?


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