Re: Who is LISTENing?
| От | Sim Zacks |
|---|---|
| Тема | Re: Who is LISTENing? |
| Дата | |
| Msg-id | 507D2A6A.10402@compulab.co.il обсуждение исходный текст |
| Ответ на | Re: Who is LISTENing? (Raghavendra <raghavendra.rao@enterprisedb.com>) |
| Список | pgsql-general |
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On 10/16/2012 07:49 AM, Raghavendra
wrote:
<blockquote
cite="mid:CA+h6Ahiy7n-FEydc8M3BLPoCunVRV3cmwHvtxXqougDwM3uwgw@mail.gmail.com"
type="cite">
On Tue, Oct 16, 2012 at 11:01 AM, Sim
Zacks <<a moz-do-not-send="true"
href="mailto:sim@compulab.co.il" target="_blank">sim@compulab.co.il>
wrote:
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On 10/15/2012 06:11 PM, rektide wrote:
Hi pgsql-general,
I'm interested in writing a supervisory process that can insure worker processes are
running/spawn new ones if not. These workers will mainly be responsible for LISTENing to
the db, which is emitting triggered_change_notification s.
Is there any means to check a NOTIFY queue to see who or if anyone is LISTEN ing on it?
Links:
http://www.postgresql.org/docs/9.2/interactive/sql-notify.html
http://www.postgresql.org/docs/9.2/interactive/tcn.html
Regards,
You can look in the pg_listener table. The relname is the
Listen/notify code that you call and the listenerpid is the
OS pid. You can see more details of that in the
pg_stat_activity
Sim
I guess pg_listener table is deprecated and no longer exist
in PG 9.0 onwards.
--Raghav
I guess I'm dating myself (still on 8.2)
This discussion indicates that it is not possible.
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