Recovery Systems: Checkpointing and Shadow Paging

To access the translated content:
1. The translated content of this course is available in regional languages. For details please visit nptel.ac.in/tr...
The video course content can be accessed in the form of regional language text transcripts, books which can be accessed under downloads of each course, subtitles in the video and Video Text Track below the video.
Your feedback is highly appreciated. Kindly fill this form forms.gle/XFZh...
2. Regional language subtitles available for this course
To watch the subtitles in regional languages:
1. Click on the lecture under Course Details.
2. Play the video.
3. Now click on the Settings icon and a list of features will display
4. From that select the option Subtitles/CC.
5. Now select the Language from the available languages to read the subtitle in the regional language.

[@mysterious_billionaire]

shadow paging starts at 15:15

[@mihir469]

Thanks

[@vighnesh32]

thanks !

[@farzeb1198]

😂😂😂😂😂

[@BS-eu9do]

Thank you 👍

[@1020gagan]

miny miny miny miny thanks :P

[@farzeb1198]

😂😅😂😂😂😂

[@JohnDoe-kj2cs]

Jai Shree Ram

[@HimanshuKumar_24]

Thank you so much, very well explained, to the point.

[@rajkolu3117]

Excellent sir
Really easily understood.
Thank u sir

[@LearningCS-jp4cb]

T2 was added because it was never committed

[@s1vc4n]

Good explanation. Thanks.

[@herahassan2818]

amazing. best explained

[@rishabhgarg7388]

How atomicity is maintained in this scheme(check pointing) because the operations which appears before checkpoint address being done permanently and operations after checkpoint of active transaction are undone. So some part of active transactions is done and some doesn't. Please clarify.

[@saketdhakar8147]

did anyone got any answer for this doubt?

[@farzeb1198]

Wanna have idea about check points characteristics

[@LearningCS-jp4cb]

Can someone tell does it matter if undo list is done before redo list or vice versa?

[@ahbarahad3203]

You have to do undo list first

[@darkexodus6404]

At 12:36 for T3, why A = 9? Shouldn't it be A = 1 ?

[@ajaykumarsoni31]

Because T3 has committed after checkpoint so need to be redo.

[@bestpaawanful]

T2 and then T4. Isnt it??

[@biginepallinagasai4403]

In this explanation, 8:33 it is provided that all the transactions in the undo list will be undone in the reverse order but while solving the problem it was not taken into consideration.

[@tanieadas]

@@biginepallinagasai4403 Reverse with respect to log records order not the list order. There is no wrong in the solution.

[@SubhadattaSahaniMCA]

🤔