Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Supported by

Java requirements Jatos 3.5 and up

edited March 2020 in JATOS

Hi @kri,

I'm currently running Jatos 3.4.2 on my server and I get the following message about upgrading to 3.5.1:

You're not using the latest JATOS version. Do you want to automatically update to version 3.5.1? The new JATOS needs a different version of Java than yours. So you'll need JATOS bundled with Java 1.8.

The server is running Java 11 (or OpenJDK 11, which comes with the Ubuntu 18.04 distro), which worked well with the current version of Jatos. Is it no longer compatible with the newer version of Jatos? I'd rather use the system Java than use the one bundled with Jatos.


Buy Me A Coffee


  • Hi Daniel,

    Java 11 is fine and Java 8 is fine too.

    I'm not sure right now why JATOS shows you this 'JATOS needs a different version of Java than yours ...' - it should't. But anyway, I wouldn't worry, both Java versions are fine.

    But do a backup ;)



  • Thanks @kri

    I've stored all the data in an external mysql database so that should be safe. I always backup the conf file as well and the rest can safely be overwritten I assume.

    Buy Me A Coffee

  • Actually, you probably want to backup the other folders too:

    • study_assets_root (folder where your study's files (HTML, JS, pictures etc) are saved)
    • result_uploads (only since v3.5.1 and the folder where file uploads are stored)
    • study_logs (folder for your study logs)
    • database (only if you do not have an MySQL database)
    • conf (your configuration)

    There is also a doc about it:

    (I put this here more detailed then you need for others as reference. Nothing is more annoying than lost data.)

  • Thanks again.

    I think I already placed my study_assets_root folder outside the folder where I keep Jatos's main code. Apart from the conf file, I can simply do a drop-in replacement of the new Jatos folder. Good thing you mentioned result_uploads though; didn't know about that one.

    Buy Me A Coffee

  • Hello brains trust. Our instance is running quite an old version of Jatos, and we are going to do a refresh of the server so I am wanting to know what would be considered your most stable current release we should try? The new features may be good, but stability is important to our studies.

  • Hi!

    Just a little hint at the start: It is always better to start a new question in the forum. It might be overlooked otherwise.

    First two points of advice:

    Now to your question: "what would be considered your most stable current release". So, v3.9.1 came out a couple days ago and was tested thoroughly before. It has a complete overhaul of the GUI - but barely touches the backend. That is a good thing stability-wise because the 'critical' changes are usually in the backend and the GUI just displays what is delivered by the backend. But if you want to be on the absolute safe side go with v3.8.6. You can always update later to v3.9.1.



Sign In or Register to comment.

agen judi bola , sportbook, casino, togel, number game, singapore, tangkas, basket, slot, poker, dominoqq, agen bola. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 50.000 ,- bonus cashback hingga 10% , diskon togel hingga 66% bisa bermain di android dan IOS kapanpun dan dimana pun. poker , bandarq , aduq, domino qq , dominobet. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 10.000 ,- bonus turnover 0.5% dan bonus referral 20%. Bonus - bonus yang dihadirkan bisa terbilang cukup tinggi dan memuaskan, anda hanya perlu memasang pada situs yang memberikan bursa pasaran terbaik yaitu Bola168. Situs penyedia segala jenis permainan poker online kini semakin banyak ditemukan di Internet, salah satunya TahunQQ merupakan situs Agen Judi Domino66 Dan BandarQ Terpercaya yang mampu memberikan banyak provit bagi bettornya. Permainan Yang Di Sediakan Dewi365 Juga sangat banyak Dan menarik dan Peluang untuk memenangkan Taruhan Judi online ini juga sangat mudah . Mainkan Segera Taruhan Sportbook anda bersama Agen Judi Bola Bersama Dewi365 Kemenangan Anda Berapa pun akan Terbayarkan. Tersedia 9 macam permainan seru yang bisa kamu mainkan hanya di dalam 1 ID saja. Permainan seru yang tersedia seperti Poker, Domino QQ Dan juga BandarQ Online. Semuanya tersedia lengkap hanya di ABGQQ. Situs ABGQQ sangat mudah dimenangkan, kamu juga akan mendapatkan mega bonus dan setiap pemain berhak mendapatkan cashback mingguan. ABGQQ juga telah diakui sebagai Bandar Domino Online yang menjamin sistem FAIR PLAY disetiap permainan yang bisa dimainkan dengan deposit minimal hanya Rp.25.000. DEWI365 adalah Bandar Judi Bola Terpercaya & resmi dan terpercaya di indonesia. Situs judi bola ini menyediakan fasilitas bagi anda untuk dapat bermain memainkan permainan judi bola. Didalam situs ini memiliki berbagai permainan taruhan bola terlengkap seperti Sbobet, yang membuat DEWI365 menjadi situs judi bola terbaik dan terpercaya di Indonesia. Tentunya sebagai situs yang bertugas sebagai Bandar Poker Online pastinya akan berusaha untuk menjaga semua informasi dan keamanan yang terdapat di POKERQQ13. Kotakqq adalah situs Judi Poker Online Terpercayayang menyediakan 9 jenis permainan sakong online, dominoqq, domino99, bandarq, bandar ceme, aduq, poker online, bandar poker, balak66, perang baccarat, dan capsa susun. Dengan minimal deposit withdraw 15.000 Anda sudah bisa memainkan semua permaina pkv games di situs kami. Jackpot besar,Win rate tinggi, Fair play, PKV Games