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Re: Determine all listeners subscribed to notifcations and what channels

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Cory Tucker <cory.tucker@xxxxxxxxx> writes:
> I'm interested in trying to figure out which channels have been subscribed
> to (using LISTEN).  From what I could tell via a little Googling, there
> used to be a table named pg_catalog.pg_listener that contained all this
> information, but that seems to have disappeared somewhere in the 9.x
> release (I'm using 9.3.x).

> Is there a way to find out which channels have listeners?

No, not any more --- that capability was intentionally given up in the
9.0 LISTEN/NOTIFY rewrite.  Not that it wouldn't be nice to have, but
the cost/benefit ratio was pretty awful.

			regards, tom lane


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