ARIES Data Structures: Page LSN
{"Image DocumentName": "ARIES Data Structures: Page LSN", "Image ImageDescription": "Each page contains a PageLSN which is the LSN of the last log record whose effects are reflected on the page. To update a page: X-latch the page, and write the log record. Update the page. Record the LSN of the log record in PageLSN. Unlock page. To flush page to disk, must first S-latch page. Thus page state on disk is operation consistent. Required to support physiological redo. PageLSN is used during recovery to prevent repeated redo. Thus ensuring idempotence.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}