# JavaScript event - query value from oracle database

**URL:** <https://community.dynatrace.com/t/javascript-event-query-value-from-oracle-database/36042>\
**Category:** Synthetic Monitoring\
**Tags:** browser-monitors, synthetic-monitoring\
**Created:** [July 29, 2022, 1:14pm UTC](https://community.dynatrace.com/t/javascript-event-query-value-from-oracle-database/36042 "2022-07-29T13:14:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![\_r\_k](https://avatars.discourse-cdn.com/v4/letter/_/3d9bf3/32.png) [@\_r\_k](https://community.dynatrace.com/u/_r_k)\
**Post date:** [July 29, 2022, 1:14pm UTC](https://community.dynatrace.com/t/javascript-event-query-value-from-oracle-database/36042/1 "2022-07-29T13:14:58Z")

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is there way how to select value from oracle db in javascrpt event ?

sub question is: how to add custom javascripot library without appending code itself into javascripot event

sub question2: is there list of javascript libraries suppported in javascript event ?

thank you

R

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<div class="post-metadata">

**Author:** ![Julius\_Loman](https://dub1.discourse-cdn.com/dynatrace/user_avatar/community.dynatrace.com/julius_loman/32/51_2.png) [@Julius\_Loman](https://community.dynatrace.com/u/Julius_Loman)\
**Post date:** [August 8, 2022, 8:57pm UTC](https://community.dynatrace.com/t/javascript-event-query-value-from-oracle-database/36042/2 "2022-08-08T20:57:15Z")

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The simple answer is no.

As the name says - it’s javascript code that gets executed in the browser. There is actually a way to include the 3rd party javascript library in the browser which executes the test, but it must not have native dependencies.

The best way to solve it is to develop a simple (REST) service which provides you with the values from DB. Then you can call this rest service from the synthetic test.

There is no list of javascript libraries - the synthetic engine uses a plain chrome browser except the synthetic API.