# Sqlserver database overwhelmed by logstash jdbc input

**URL:** <https://discuss.elastic.co/t/sqlserver-database-overwhelmed-by-logstash-jdbc-input/123951>\
**Category:** Logstash\
**Created:** [March 14, 2018, 4:27pm UTC](https://discuss.elastic.co/t/sqlserver-database-overwhelmed-by-logstash-jdbc-input/123951 "2018-03-14T16:27:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Victor\_Dusautois](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/victor_dusautois/32/96721_2.png) [@Victor\_Dusautois](https://discuss.elastic.co/u/Victor_Dusautois)\
**Post date:** [March 14, 2018, 4:27pm UTC](https://discuss.elastic.co/t/sqlserver-database-overwhelmed-by-logstash-jdbc-input/123951/1 "2018-03-14T16:27:31Z")

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Hi,  
I am trying to get data from a MSSQL database using logstash jdbc-input. The database seems overwhelmed by the requests made by logstash, creates a lot of fake\_worktable, and access to the database for other users are slow as soon as logstash script is started.  
Is there a way to prevent this?

What use can have jdbc\_fetch\_size in this context?

Thanks in advance for your feedback

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 11, 2018, 4:27pm UTC](https://discuss.elastic.co/t/sqlserver-database-overwhelmed-by-logstash-jdbc-input/123951/2 "2018-04-11T16:27:44Z")

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