Look at this post from your log : 

20190724 13:16:36 [main] INFO com.ubooquity.Ubooquity - Running with the following parameters - headless: false, libraryport: -1, adminport: -1, remoteadmin: false, host: null, debug: false, execdir: C:\Ubooquity

Your uooquity port configuration doesnt know which port do you want to use and which host-IP-adress do you want to use.

So your configuration can only run local with no defined ports and without any known IP-adress - cant work, anyway  .... 

and by all, look at this : 20190724 13:16:36 [main] INFO com.ubooquity.Ubooquity - Max heap size available: 247 MB

it still needs more memory : 247 MB seems too less for 2.1.2 , 512 MB works definitely (4096MB under Linux x64 here, and sometimes max 15 users read here at the same time - without any leaks or delays).

Try this call in a cmd-window :

java -Xmx512m -jar Ubooquity.jar --libraryport 2202 --adminport 2203 --headless --host:<ENTER_YOUR_LOCAL_IP_ADRESS_HERE> 

- At  <ENTER_YOUR_LOCAL_IP_ADRESS_HERE> , type your local IP-adress from your LAN configuration without the <>. 

- keep this cmd-window open and running to see the output logs.

- now open your browser and enter 

http://<ENTER_YOUR_LOCAL_IP_ADRESS_HERE>:2203

You should now see the ubooquity admin page an begin with your ubooquity experience 😉 .... 

more to find @ https://vaemendis.github.io/ubooquity-doc/pages/manual.html 

hope that may help you ! 

best regards 

TierParkToni

Hello jaykool,

please try this : /opt/jre_1.8.191/bin.java -jar Ubooquity.jar -libraryport 2202 -remoteadmin -adminport 2203 

Hope that helps ..

Best regards !

TierParkToni

Words from Tom from a other case : 

" I don't know exactly what happened, but your database file definitely seems unusable. :(

If you want to make a test before getting rid of it, you can rename it (after stopping Ubooquity) in case you want to restore it later: the file is named "ubooquity-5.mv.db". "

(found @ : https://ubooquity.userecho.com/communities/1/topics/734-everything-was-working-great-then- )

Hi tml, 

sorry, but i have no solution for you, but i'm very interested in your script - can you post it here ? 

Best regards from Munich

TierParkToni

i've installed 2 KINGSTON DDR3 PC3-12800-SODIMM 8GB modules, and it works nearly 2,5 years without any trouble - the trouble with USB3 started with the 4.3.x versions of QTS and has nothing to do with Ubooquity or Java. I've running parallel 3 different VMs with virtualisation station and didn' have any problems, even running a database server on it. 

According to your errors/bugs it seems to be a RAM size problem : 3.5 GB is the default max memory setting running Ubooquity in the qpkg-version of Ubooquity, and your system has even this - and now needs to use swap. Swapping is much less performant than ram, so please check in the Ubooquity admin panel your system info for the value of max memory. If it says 3496 MB, you need to set your max memory th 2048 with  

"$JAVA -Xmx2048m -Dfile.encoding=UTF8 -jar Ubooquity.jar --headless --remoteadmin &" 

in your ubooquity-script found under your .qpkg-folder (/share/CACHEDEV1_DATA/.qpkg/UbooQuity/UbooQuity.sh).

Or you just try spend some more physical RAM - it seems worth it. 

Hope that helps ! 

Best regards

TierParkToni

hmm, same JRE here - strange ... 

Wich version of QTS runs on your NAS - because my x53 here have some big trouble runing the actual version and USB3, so i have to go back using 4.3.4.0695. 

And how much RAM do you have ? 

What QNAP-NAS model do you use : with intel or ARM CPU ? 

QNAP-NAS with ARM is generally not recommended as platform for Ubooquity because it's very low RAM-memory and have to share it with the OS... trust me, i've testet it with an HS-210 and an TS-239 - just no fun an a lot of side effects... 

In the case of a model with a intel CPU : 

Do you use the original JAVA provided by QNAP or the JAVA from QNAPclub https://qnapclub.eu ?

Using the original QNAP Java may sometimes only use the 32bit runtime, the QNAPclub Java runs perfect with 64bit.

It runs here on a TS453mini with 16GB RAM and nearly 50 Users (the NAS stores PDF-ebooks for car restorations).

And for your problem with the MOBI/FB2 books :calibre can do a "mass"-convert, but it really takes some time ;-) ... 

@santi (& tom h): ... just convert it via calibre before put it into Ubooquity - what's the problem ?

A auto-conversion with 3rd-party libs can nothing better, but anything mutch worther ... 

Hello Scott,

shure that you not using any comic reader chrome extension (or pc software with browser support) ? 

i've tested the download function it on 3 computers and can't replay your "cbr/cbz-effect" . 

But, if any cbr/cbz-extension for chrome ist installed, it will open it in a new tab....

Hope that helps !

best regards

TierParkToni

Now it's my turn to add me to the thanksgiver-list : it's always a pleasure reading my ebooks in a browser window or with Kuboo and your great peace of software on my NAS - knowing you at parenthood makes your work much, much worthy and valuable !

So : a very, very big thank you :-) !