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replication: who initiates connection?

Bill TorpeyMay 11 2016 — edited May 12 2016

We're using replication with active-standby pairs with one (or more) read-only subscribers.

The question is: who initiates the TCP connection, specifically re: read-only subscriber?  Does the master poll for the subscriber?  Or is it listening for a connection from the subscriber?  Or both?

I've looked in docs and the forum and cannot find any mention of this.

Thanks in advance!

This post has been answered by ChrisJenkins-Oracle on May 12 2016
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Locked on Jun 9 2016
Added on May 11 2016