# macOS Catalina - postgreSQL - sysctl.conf still relevant?

I had the following settings in /etc/sysctl.conf before Catalina:

# PostgreSQL Config for the MAC
kern.sysv.shmmax=2147483648
kern.sysv.shmall=524288
kern.sysv.shmmin=1
kern.sysv.shmmni=32
kern.sysv.shmseg=8
kern.maxprocperuid=1024
kern.maxproc=2048


The Catalina install moved this file to the /Users/Shared folder as /etc is now considered private to macOS.

Are these settings still relevant for Catalina, and if so, where do they need to go?

Thx.

I ran into the same issue. I put the file back (at /etc/sysctl.conf) and it worked just like before (at least for setting kern.maxvnodes).

Answered by Russell Davis on January 4, 2022

You don't need the shared memory parameters any more, because PostgreSQL has been using POSIX shared memory for a while now.

Making sure that the PostgreSQL user can have enough open files is a good idea though.

Answered by Laurenz Albe on January 4, 2022

## Related Questions

### How do I send an array of strings to PG from PHP without the former becoming confused?

1  Asked on August 12, 2020 by g-iannello

### How can I check if BULK INSERT is running on a table?

1  Asked on August 3, 2020 by shr

### Issues with MySQL 8.0.17

1  Asked on July 31, 2020 by vishal