Checkpoint and Transaction Log Files

Checkpoint files contain an image of the database in persistent storage on the file system. TimesTen uses dual checkpoint files in case the system fails while a checkpoint operation is in progress.

TimesTen captures the changes to a database in transaction log files. TimesTen periodically writes to persistent storage on the file system. If a database needs recovery, TimesTen merges the most recent database checkpoint file on the file system with the completed transactions still in the transaction log files.

See Data Availability and Integrity.