I've installed PostgreSQL 12 and PostgreSQL 15 side-by-side in my Ubuntu 
Linux.  Both works fine till date.  
    On Saturday 4 January, 2025 at 04:39:30 pm IST, Arbol One 
<arbol...@hotmail.ca> wrote:  
 
   
Hello.
 In my Debian 12 machine, I have PostgreSQL-15 installed; I'd like to upgrade 
to PostgreSQL-16. Should I first uninstalled PostgreSQL-15 and then install 
PostgreSQL-16 or is there a way to just do an upgrade?
 
 Thanks.
 
 -- 
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