Software Version Considerations
It's important to have a good idea about what software versions you are using, but we make it simple. Ignition only allows one version at a time to be installed on a computer. This means that you never have to worry about which version you are using at the moment. Ignition versions are made up of three numbers: the Platform, major, and minor version numbers. For example, 7.8.2 is platform 7 (Ignition), major version 8 (new features), minor version 2 (stability improvements).
If you want to know what version of Ignition you are using, there are several places you can find it. The two simplest places to find your Ignition version are in the Gateway Webpage and in the Designer. Both of these also list the version of Java that the Ignition service (Gateway) is using. Note: this may not be the only version of Java that is installed.
- The Gateway Webpage: in the Status section under Systems > Overview.
- There is also a Modules page under Status -> Modules that will tell you the versions of each module.
- In the Designer: In the Menubar under Help -> About Ignition Designer. This page will tell you the version of the platform (Ignition) as well as each module.
Ignition backups will work on any version that is the same or newer. For example, a backup taken from 7.8.0 can be restored in 7.9.1, but the opposite is not true. If you are developing on a test server, make sure that they have the same version of Ignition so your backups can be transferred seamlessly.
You can have multiple Java installations (all different versions) on one computer. Java uses version number similar to Ignitions. For example, Java might be version 1.8.0_45 but we often refer to Java as "Version 8 Update X." In this example, the 1 means Java, and it is version 8.0 update 45. The best way to check what Java versions are installed depends on your Computer's operating system, but in Windows you can open up the control panel and click the Java option. If you have multiple versions of Java installed, check the Ignition version (above) to see which Java version is being used. If Ignition is using the wrong one, you can easily Change your Java Version. Depending on your OS and Java version, your Control Panel might look slightly different than this:
It is not uncommon to connect Ignition to multiple types and versions of Databases, but it is very rare to have multiple versions of a database installed on the same computer. Usually you will see multiple servers handling the load of multiple databases. Fortunately the Ignition drivers for connecting to a database don't work for specific versions, they will work for all database versions. Just pick out the right type (MSSQL, MySQL, Oracle, etc.) and the driver will do the rest. Check out the Database Connections section for more information on getting conected.