When installing and running multiple versions of Actian DataConnect on the same system, it's important not to include the following in the system variables:

Instead, use a .bat file to set the paths specific to the environment you're working with. For example, if you're running both v12.2 and v12.3 on the same system, ensure that you launch Actian DataConnect using the appropriate .bat files. Also, ensure that the variables set in the .bat file do not conflict with the system environment variables.