A mirror of https://dev.openclinica.com/distros/ without broken ssl certificate madness
Check the releases for the zip files.
The technical documents at [1] refer to a demo study database, but the file is not hosted anywhere on OpenClinica any more. There is a copy of it in the demo_study folder. This is a decent start for a test database too :)
https://docs.openclinica.com/3.1/technical-documents/system-administration/loading-demo-database