Data type length Size

[Vishal Kumar Sr]

Hi Everyone,

I have one requirement to change a string (data type) field length from 255 character to 7000 character.

Just wanted to know how much size I can increase for the string data type, is there any impact or performance issue of doing this and how I can check my instance is running on which database like oracle, my SQL, etc.

[Gunjan Kiratkar · Accepted solution]

Hi @Vishal Kumar Sr ,

This is not possible, the max length you can get is 4000.

Reference :-

Can we create a field with length of string(16000)? 

Servicenow uses mySQL database. enter stats.do in application navigator

Reference :-

What database is servicenow using in backend? 

[Gunjan Kiratkar · Accepted solution]

Hi @Vishal Kumar Sr ,

This is not possible, the max length you can get is 4000.

Reference :-

Can we create a field with length of string(16000)? 

Servicenow uses mySQL database. enter stats.do in application navigator

Reference :-

What database is servicenow using in backend? 

[Gunjan Kiratkar · Accepted solution]

To get database overview follow below steps :-

Navigate to Diagnostics Page