Re: [GENERAL] MAX_CONNECTIONS ??

paulo matadr wrote:
> I need help to alter max_connections em my database, this parameter
> stay in defalt MAX_CONNECTIONS=100
> I want to change for MAX_CONNECTIONS=300. about parameters below,
> need to change anything?
> 
> 1 -sysctl.conf
> 
> kernel.shmmax = 68719476736
> kernel.shmall = 4294967296

Does your shmmax have one digit too many? 68GB?

> # - Memory -
> 
> 2-Postgresql.conf
> shared_buffers = 2048MB                                          
> temp_buffers = 12MB                                                    
> work_mem = 12MB                     
> maintenance_work_mem = 128MB                          
> max_fsm_pages =   4000000                               
> max_fsm_relations = 5000            

Should be OK, depending on your work-load.

One question - what do you plan on doing with 300 active connections?
Unless you've got more than 100 processors in this machine you might
want to consider connection-pooling.

-- 
  Richard Huxton
  Archonet Ltd