Migrating JIRA to another Server with another Database

[Gennadiy]

This question is in reference to Atlassian Documentation: Migrating JIRA to Another Server

My question about  "3.3 Connect the new version of JIRA to a new, empty database"

Is it possible, connect to other type of database and then migrate data from old database to new, or both databases should be the same type?

[Gennadiy · Accepted solution]

Is it possible migrate data from two different jiras into one ?

For instance we have Jira 3.3.8 and 4.3.4, and we decide to keep all on Jira 7

[Andrew Frayling]

You'd have to get them all on the same version of JIRA first. Upgrade 3.3.8 to 7, upgrade 4.3.4 to 7 and then migrate both to a new JIRA 7 instance, or import one of the upgraded instances into the other.

You can't go direct to 7 from 3.3.8, you'd need to upgrade that to 4.4.5 first and then to 7. I think 4.3.4 can go straight to 7. More details at https://confluence.atlassian.com/jira/upgrading-jira-185729508.html and https://confluence.atlassian.com/jira/upgrading-jira-manually-235670607.html

[Gennadiy]

Thank you Andrew for you time and useful advises!

[Andrew Frayling]

Hi, you can migrate to a different type of DB, see https://confluence.atlassian.com/jira/switching-databases-185729500.html for details.