> On Oct 5, 2022, at 09:32, Kaushal Shriyan <kaushalshriyan(at)gmail(dot)com> wrote:
>
> Hi,
>
> Is replication possible between PostgreSQL support Master database running 9.6.1 version which is a lower version to Standby/Slave running version 10.17?
Binary replication is not possible between different major versions. You can do logical replication, using the pglogical extension:
https://github.com/2ndQuadrant/pglogical
(Although not directly related, do note that 9.6 has been past end-of-life for nearly a year, and version 10 will reach end-of-life in November of this year. 10.17 is over a year old, and 9.6.1 is almost six years old; the most recent versions of each are 10.22 and 9.6.24.)