Check for out of memory related warnings

[Kent Gloriana]

Hi Guys.

I am new to ServiceNow. If there is an out of memory warning, on what table and field can I check for the out of memory related warnings?

Thanks!

[Tom Sienkiewicz]

Hi. Where did you see that kind of a warning?

Generally, you can quickly check the state of your instance by typing "stats.do" in the navigator.

Then theres the system log, where any kind of errors will appear.

"Transaction cancellations" module will show you any timed-out or otherwise aborted transactions. 

And then theres "Node log file browser" which allows you to see even more detailed logs, coming from your instance app server.

Generally, I don't think I have ever seen out of memory issues on an instance, except perhaps when trying to do an import of a huge amount of records (couple million) at once...

[Kent Gloriana]

Hi @Tomasz Sienkiewicz 

Yes, Actually It happened on an instance. There is a scheduled job that every specific time it exports a PDF file with lots of comments and work notes. Due to that, the out of memory issue occur and the instance become unresponsive. That's why We are thinking of a way to prevent this from happening again. So we would like to know which table and field we can check for out of memory related warnings before it actually occurs.

[Tom Sienkiewicz]

For PDF Exports, you can double check the limit properties set on your instance. Maybe those have been customized and allow too large files.

These are under System Properties > Import Export

You can also review the Transaction Quota rules (you'd have to double check what kind of transaction occurs during your PDF Generation - I assume this is a REST transaction). Usually those get cancelled after ca. 5 minutes but perhaps you woudl want to make it even shorter.

Finally, take a look at the properties related to attachments size. Having huge attachments can also contribute to memory issues...

[Kent Gloriana]

Hi @Tomasz Sienkiewicz 

Thanks for your help. I have another question. I read about the "Node Log File Browser" and it help to detect warning and errors. Can you tell what is the specific table for the "Node Log File Browser"?