Object level restoration problem...:)

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Object level restoration problem...:)

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SQL_Comp

Posted Wednesday, September 23, 2009 5:50 AM

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Group: General Forum Members
Last Login: Tuesday, February 12, 2013 11:16 PM
Points: 40, Visits: 196

Scenario:

1. Backup is taken in the night at 7pm

2. If users update the data at 9am (next day). Ex: UPDATE Employee SET EmpNo = 2 WHERE EmpNo = 1. This data is residing on Page - 1:88 .

3. Data page (1:88) is corrupted at 10am.

Questions:

If I follow your recommendations and after troubleshooting it successfully:

1. What will be the value of EmpNo? Is it 1 or 2?

A1 It will be 1, later you can

2. If it 1 then what will happen to the dependancies of Employee table? Assume, there is a trigger on Employee table which updates the EmpNo in the other tables as and when EmpNo is updated in the Employee table.

:) :) :)
Amey ghag
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Post #792542

SQLZ

Posted Wednesday, September 23, 2009 7:05 AM

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Last Login: Thursday, May 02, 2013 5:38 AM
Points: 870, Visits: 858

I'm a little confused here as to what you're doing....

When you say

Amey ghag (9/23/2009)

If I follow your recommendations....

what recommendations are you actually talking about?

Karl
source control for SQL Server

Post #792592

Silverfox

Posted Wednesday, September 23, 2009 7:12 AM

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Last Login: Tuesday, March 26, 2013 6:50 AM
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Cannot give recommendations on what you have said.

depending on what troubleshooting is applied, will mean that the end result could be different.

IF a restore can be used to rollback the change

EmpNo will be 1

otherwise

EmpNo will be (depending on the level of corruption, possible 2 or unreadable)
and once again

if restore is done from teh previous night, then the user update has not happened and the trigger wouldnt have fired.
otherwise
depending on what is stored on that data page, you will see nothing for that data page and updated values populated by the trigger for other dependant tables if they are not on that data page

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