Checkpoints

Checkpointing is an activity that writes information to stable storage during normal database operations to reduce the amount of work required during restart recovery after a system failure.

The checkpoint procedure guarantees that at any time:

• The updates made by committed transactions that occurred prior to the checkpoint have been applied to the stable database during the last checkpoint, if not earlier

Use the JadeDatabaseAdmin class doCheckpoint and getLastCheckpoint methods to cause a database checkpoint operation to be queued to the database worker thread and retrieve the journal number and byte offset of the last database checkpoint, respectively.