Hi,

As I just wrote:
> On Mon, 15 Oct 2018 at 02:40, Andres Freund <and...@anarazel.de> wrote:
> > Please try to quote properly.

On 2018-10-15 02:45:51 +0530, bhargav kamineni wrote:
> Yeah i have used rsync , Got it now will increase the max_replication_slots
> to high enough , Thank you Andres Freund :-)

You probably afterwards want to drop those slots from the new standby.
See the following section from the docs:

https://www.postgresql.org/docs/current/static/continuous-archiving.html#BACKUP-LOWLEVEL-BASE-BACKUP-DATA
"It is often a good idea to also omit from the backup the files within the 
cluster's pg_replslot/ directory, so that replication slots that exist on the 
master do not become part of the backup. Otherwise, the subsequent use of the 
backup to create a standby may result in indefinite retention of WAL files on 
the standby, and possibly bloat on the master if hot standby feedback is 
enabled, because the clients that are using those replication slots will still 
be connecting to and updating the slots on the master, not the standby. Even if 
the backup is only intended for use in creating a new master, copying the 
replication slots isn't expected to be particularly useful, since the contents 
of those slots will likely be badly out of date by the time the new master 
comes on line."

Greetings,

Andres Freund

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