OmnisDataBridge 1.78

Doug Easterbrook doug at
Tue Feb 20 17:01:55 UTC 2024

if thats the case… you can set more ports or open files.

we put a file called Launchd.conf  into /etc   (you need to set the ownership of this right).  it contains the following single line to give more files/ports available to all processes.

limit maxfiles 1000000 1000000

that was an early thing we did to deal with macs typically limiting files each process can open.     It may only be useable in certain versions of OSX..   

There is also a file you can create called limit.maxfiles.plist which goes into /Library/LaunchDaemons/      Also check that its permissions are correct.  I think this is where MOST RECENT version of OSX get its limit from

<?xml version="1.0" encoding="UTF-8"?>  
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"  
<plist version="1.0">  

you make also want to look at the ‘ulimit’ command.   I dug up something on stack overflow

I know that when I type ‘ulimit’ in terminal, I get ‘unlimited’

Its been a fair number of years since I went through the exercise and figured out which approach was right for which versions of OSX.

so, my Somoma machine still has both of them :). /etc/Launchd.conf and /Library/LaunchDaemons/limit.maxfiles.plist

and that helps remove that ridiculous 256 open file limit per process on OSX.    

if that is indeed your problem, I hope this helps

Doug Easterbrook
Arts Management Systems Ltd.
mailto:doug at
Phone (403) 650-1978

> On Feb 20, 2024, at 6:47 AM, Juan Bofill <juanbofillaba at> wrote:
> Hi all
> I believe I hit some kind of port limit or number of files open. I see one can run more than one ODB on a single server and also on different ports. Learning how to do that…
> Thanks all for their help
> Juan
> On Feb 19, 2024, 5:33 PM -0400, Juan Bofill <juanbofillaba at>, wrote:
>> Hi
>> The server is on a MacMini running Monterey.
>> I used the terminal command :
>> Disable App Nap System Wide in Mac OS X
>> defaults write NSGlobalDomain NSAppSleepDisabled -bool YES
>> Maybe I should try with Big Sur or older?
>> Thanks
>> Juan
>>> On 19 Feb 2024, at 4:45 PM, Reg Paling <reg.pT
>>> aling at> wrote:
>>> Hi Juan,
>>> The first thing you need to know is that the combination of Omnis Studio
>>> 10.22 + Omnis DataBridge 1.78 works.  It works just as well (on both
>>> Macintosh and Windows) as it did with Omnis Studio 4.x.  So it would be
>>> overkill to start running around trying to look for alternatives to ODB at
>>> this point.  There is nothing wrong with the strategy you chose and no need
>>> for regret.
>>> I suggest you contact Omnis Tech Support and they can go through your setup
>>> with you.
>>> Note that Studio 10.22 is 64-bit software and it won't run on older
>>> versions of macOS, whereas Studio 4.x is 32-bit and it won't run on newer
>>> versions of macOS.  If you need to run both 4.x and 10.22 on the same
>>> computer, that will probably work on Mojave.
>>> If you let us know in more detail what computers and operating systems you
>>> are using for development, server and workstations, and precisely what
>>> does work and what isn't working, we might be able to help more.
>>> Kind regards,
>>> Reg
>>> On Tue, Feb 20, 2024 at 4:29 AM Juan Bofill <juanbofillaba at> wrote:
>>>> Hi all
>>>> I got myself in trouble
>>>> Just upgraded all my DML datas and libs to 10.22 using OmnisDataBridge
>>>> 1.78. Have lots of data files…
>>>> Did all tests with a Development and just 1 Runtime. All was ok.
>>>> Installed all 5 Runtimes on each Mac and now can NOT open the data files
>>>> on all the Macs.
>>>> Should have gone to SQL or Postgress but decided to do DML first with the
>>>> newer 10.2 and I am regretting it. Studio 4 was very stable…
>>>> Thanks for any help
>>>> Juan Bofill
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