Skip to main content
A PostgreSQL replica’s max_connections setting must be greater than or equal to the primary’s setting; if the value is increased on the primary before being changed on the replica it will result in the replica becoming inaccessible with the following error:
Our SRE Team is alerted when a replica fails for this reason and will take action to correct the situation (generally by increasing max_connections on the replica and notifying the user). To avoid this issue, you need to update max_connections on the replica Database to the higher value before updating the value on the primary.