# MySQL tables name with underscore problem

**URL:** <https://community.dreamfactory.com/t/mysql-tables-name-with-underscore-problem/3831>\
**Category:** uncategorized\
**Tags:** community\
**Created:** [May 18, 2017, 5:57pm UTC](https://community.dreamfactory.com/t/mysql-tables-name-with-underscore-problem/3831 "2017-05-18T17:57:07Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Alex\_Rodriguez](https://avatars.discourse-cdn.com/v4/letter/a/d6d6ee/32.png) [@Alex\_Rodriguez](https://community.dreamfactory.com/u/Alex_Rodriguez)\
**Post date:** [May 18, 2017, 5:57pm UTC](https://community.dreamfactory.com/t/mysql-tables-name-with-underscore-problem/3831/1 "2017-05-18T17:57:07Z")

</div>

When I create a MySQL service and I try to get a table named with underscores, dreamfactory show:

There was an error connecting to [http://127.0.0.1:81/api/v2/colddb/\_table/cold\_ad](http://127.0.0.1:81/api/v2/colddb/_table/cold_ad).  
Why this might have happened:  
The server couldn’t send a response:  
Ensure that the backend is working properly  
Self-signed SSL certificates are being blocked:  
Fix this by turning off ‘SSL certificate verification’ in Settings \> General  
Client certificates are required for this server:  
Fix this by adding client certificates in Settings \> Certificates  
Request timeout:  
Change request timeout in Settings \> General

that’s the output from postman, and my server version is Ubuntu 16.04, I have two days with this error and need to put my app in production soon. please help me