# Is it possible to get stack trace info on SQL spans from ruby agents? **URL:** \ **Category:** APM\ **Tags:** ruby\ **Created:** [June 4, 2020, 6:02pm UTC](https://discuss.elastic.co/t/is-it-possible-to-get-stack-trace-info-on-sql-spans-from-ruby-agents/235829 "2020-06-04T18:02:08Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![adnanrh](https://avatars.discourse-cdn.com/v4/letter/a/13edae/32.png) [@adnanrh](https://discuss.elastic.co/u/adnanrh)\ **Post date:** [June 4, 2020, 6:02pm UTC](https://discuss.elastic.co/t/is-it-possible-to-get-stack-trace-info-on-sql-spans-from-ruby-agents/235829/1 "2020-06-04T18:02:08Z")
If you are asking about a problem you are experiencing, please use the following template, as it will help us help you. If you have a different problem, please delete all of this text šŸ™‚ **Kibana version** : 7.6.2 **Elasticsearch version** : 7.6.2 **APM Server version** : 7.6.2 **APM Agent language and version** : Ruby 3.6.0 **Browser version** : Chrome **Original install method (e.g. download page, yum, deb, from source, etc.) and version**: **Fresh install or upgraded from other version?** : fresh install **Is there anything special in your setup?** For example, are you using the Logstash or Kafka outputs? Are you using a load balancer in front of the APM Servers? Have you changed index pattern, generated custom templates, changed agent configuration etc. **Description of the problem including expected versus actual behavior. Please include screenshots (if relevant)**: I have set up elastic-apm on a rails 5.0 app which seems to be working without many issues. One thing I noticed, however, is that for any SQL or html.erb spans, I simply see "No stack trace available." I've tried adjusting the span\_frames\_min\_duration configuration to enable stacktraces for all spans, but I am only able to see stack traces for AJAX or mongo query spans. I also tried changing a few other configurations such as use\_legacy\_sql\_parser and the source\_lines\_app\_frames settings, but none worked. I was able to find this post: [https://github.com/elastic/kibana/issues/19645](https://github.com/elastic/kibana/issues/19645) which mentions that some agents have limitations in the stack trace info they can send. So I would like to ask, is this a current limitation on the ruby agent? Or is it possible to get stack trace info on all span types including SQL, html.erb rendering, etc.? Thank you. **Steps to reproduce** : 1. 2. 3. **Errors in browser console (if relevant)**: **Provide logs and/or server output (if relevant)**: ---
**Author:** ![mikker](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mikker/32/22118_2.png) [@mikker](https://discuss.elastic.co/u/mikker)\ **Post date:** [June 17, 2020, 1:38pm UTC](https://discuss.elastic.co/t/is-it-possible-to-get-stack-trace-info-on-sql-spans-from-ruby-agents/235829/2 "2020-06-17T13:38:17Z")
Hi there! Sadly, because of the way Rails' `ActiveSupport::Notifications` work, it's not possible. We've tried a few approaches but none successful. We opened an issue with Rails to see if there was interest but it seems not. > > > I work on the Elastic APM Ruby agent and we subscribe to ActiveSupport::Notifications in order to instrument Rails apps. > Iā€™m currently trying... ---
**Author:** ![adnanrh](https://avatars.discourse-cdn.com/v4/letter/a/13edae/32.png) [@adnanrh](https://discuss.elastic.co/u/adnanrh)\ **Post date:** [June 30, 2020, 12:12am UTC](https://discuss.elastic.co/t/is-it-possible-to-get-stack-trace-info-on-sql-spans-from-ruby-agents/235829/3 "2020-06-30T00:12:15Z")
Thanks! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 20, 2020, 8:12pm UTC](https://discuss.elastic.co/t/is-it-possible-to-get-stack-trace-info-on-sql-spans-from-ruby-agents/235829/4 "2020-07-20T20:12:29Z")
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