FME Workspaces often rely on third party applications for connecting to data sources. Examples include an Oracle client for connecting to an Oracle database and an ArcGIS installation for connecting to Esri Geodatabases.
If you must install a third-party application for your FME Desktop installation, repeat that installation on all machines hosting FME Engines. Review our FME formats matrix and compare by platforms to check if the formats you plan to use are available.