On Thu, 2022-06-30 at 16:40 +0530, eswar reddy wrote: > Hi sir, I am getting below error for the past 3 month's plz can suggest how to resolve this issue. > > PostgreSQL 9.6 version and Linux redhat 7.2 efm 4.1 plz > > Fatel: unsupported frientend protocol 1234.5680: server supports 1.0 to 3.0 > > This error continuesly getting in log file This is simple: upgrade the server to a supported version, ideally v14. Yours, Laurenz Albe