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.

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.

Changes to a database are captured in transaction log files that are periodically written to persistent storage on the file system. If a database needs to be recovered, TimesTen merges the most recent database checkpoint file on the file system with the completed transactions that are still in the transaction log files.

See Data Availability and Integrity.