Re: vacuum analyse waiting

On Mon, Mar 21, 2016 at 04:26:40PM +0100, Nicolas Aubert wrote:
> the vacuum process is the 22510
> here is what I found in pg_locks
>
>
> virtualtransaction |  pid  |           mode           | granted | fastpath
>
------------+---------------+---------+-------+----------+--------------------+-------+--------------------------+---------+----------
>
> 3/376480           | 22510 | ExclusiveLock            | t       |
>             |               |         |       |          |
> 3/376480           | 22510 | ShareUpdateExclusiveLock | f       | f
>

I'm sure there are more columns in pg_locks.

What you need to find is the rows with pid of vacuum, that have granted
= 'false', and see what the lock is on (the columns you ignored).

Then you check what has conflicting locks on the required things.

Best regards,

depesz