The figure shows the transaction log records AT1 (oldest), CT1, BT1, AT2, BT2, AT3, CT2, BT3, AT4, DT1, CT3, CT4, DT2, CT5, and DT3 (newest). The Initial Read log record identifier and Current Read log record identifier both point to AT4. All records older than that (AT1, CT1, BT1, AT2, BT2, AT3, CT2, and BT3) are shown as flagged for purging.

As in the previous figure, this figure shows the records retrieved from the transaction log: BT1, BT2, BT3, AT1, AT2, AT3, and AT4; but now they are shown as associated with a ttXlaAcknowledge call.

End of description.