Reason for reload fail

[arethaking]

Hi All,

The below table contains two huge Apps running parallel daily and failing.

My guess is due to not enough RAM.

Please advise the exact reason for the reloading failer.

Thanks in advance.

Date	AppName	Description	Message	NetRAM	PeakRAM	CPULoad	VMCommitted(MB)	VMAllocated(MB)	VMFree(MB)	VMLargestFreeBlock(MB)
01-Apr-2020	App1	Command=Doc::DoSave;Result=9001;ResultText=Error: Read Failed	Could not read app	192	16216960	26	128478	199583	45867	45867
03-Apr-2020	App2	Command=Doc::DoSave;Result=9001;ResultText=Error: Read Failed	Could not read app	640	47484480	31	97462	181460	68049	68049
06-Apr-2020	App1	Command=Doc::DoSave;Result=9000;ResultText=Error: Write Failed	File operation failed	308130752	13191807104	17	100084	190506	63182	63182
08-Apr-2020	App2	Command=Doc::DoSave;Result=9001;ResultText=Error: Read Failed	Could not read app	640	47464448	17	100084	190506	63182	63182
09-Apr-2020	App2	Command=Doc::DoSave;Result=9001;ResultText=Error: Read Failed	Could not read app	28090945152	44744115136	55	131658	214717	33095	33095

[ArnadoSandoval]

Hi Aretha King,

I experience tasks failures previously; there is not a single answer to your question, you need to find out more about these errors, I will write down my observations, you may reply with feedback on what is going on at your site.

My errors analysis:

1. There are two tasks failing, App1 and App2.
2. The Could not read app error happened 4 times, three times for App2!
3. App1 shows a failure writing data.

Some actions:

• It will take some time to troubleshoot your issues, so be patient.
• I found this post Qlik Sense QMC not working correctly failed reloads; the site's antivirus prevented QS to load the application; Is this possible at your site?
• What did you find at the QMC Task screen for these broken tasks?; there is a question mark option that allows you to load the tasks execution log, it helps you to find the area within the script where the error happened; You may have to do this each time the task fails. You may want to visit this articles: Tasks , scroll to the Status part in the document, just above the Task Status Information you will find the question mark I am talking about, you can also check the Task Status Information 

My experience was with a Qlik Server running tasks loads every hours, randomly two tasks were fighting for the same resource, one tasks was writing-updating a QVD while the other tried to read it, causing the crash and more.

Hope this helps,

Arnaldo Sandoval

[arethaking]

Hi Arnaldo Sandoval,

Thank you for the reply.

I can see X mark at the log in QMC but no error message in QMC inside the log , it is showing successful. Because the App was reloaded successful but not enough memory to save the file due to another App is running parallel which is using all the RAM at the same time.

Kindly advise.

[ArnadoSandoval]

@arethaking 

You have tasks competing for memory resources, I could think of two or three possible ways to handle this scenario:

1. Would it be possible to increase the server memory? I know this option cost money.
2. Would it be possible to schedule the task one of the tasks to run one hour later; it could be 30 minutes, all depends on the running time of the tasks.
3. You could implement a condition to run the second task/job once the first task/job finish.

Would it be possible to load the screenshot of the X you reported? I don't have access to a QlikServer, preventing me to explains more about how to handle that X.

Hops this helps,