which sqlite3
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.
SQLite is installed as part of the base set of packages for OpenShift Online and is available to every application without having to install any cartridges.
There are no environment variables for SQLite. The sqlite3 executable should be included in your PATH already and available for use within your application.
If you need the exact path to the executable, you can ssh into your application and run the following command:
which sqlite3
Which should output the location as /usr/bin/sqlite3.
To get started using SQLite you should consult the SQLite Programming Interfaces section of the Official SQLite Documentation page.