Upgrating Jira

[Krishna.Bhatt]

Hey, I have jira installed in linux server i.e 7.4 and now i need to upgrade it into 7.11 .So ,I need to ask you that if I upgrade the jira then my data will be lost ?

Once jira upgrade may i need to again configure it with database as well or it automatically configure.

Please suggest me suitable steps for the same

Thanks