M a n y industrial applications consist of different components that were designed and implemented separately. Software reuse and component software architecture often dictate this style of building applications out of existing modules. In such a n application, some modules m a y use databases t o store critical data, while other components m a y use regular files or volatile m e m o r y either by design or t o improve performance. Therefore, global coordination is necessary f o r maintaining data consistency and recoverability across multiple datastores. W e describe a way of integrating checkpointing with transactions t o ensure consistency and recoverability of data stored outside the databases. Our approach transforms a n existing checkpoint library into a transactional resource manager that can participate in such a global coordination.