Blogs from Suhas
Dirtying my hands in SQL Server
Copy On Write
Lock Pages in Memory
Minimum Recovery LSN
Not For Replication
SQL Server 2005
SQL Server 2008
Virtual Log File
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Blogs from Suhas
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Internals of Database Snapshot – Part 2: Snapshot and the Buffer Pool
In my earlier post, we have seen what Database Snapshots are, and how the Database Snapshots are maintained by the SQL Server Database Engine. In this post we will see how the data and index pages, belonging to the Snapshot, are managed in the Buffer Pool. Before we start drilling down further, let me...
2 Aug 2011
Internals of Database Snapshot
In this post, we will explore the internals of Database Snapshot. Most of this information is already available in the Internet, in the posts authored by the SQL Server Development Team and the CSS Escalation Team; however, through this post we will attempt to consolidate all of these information for...
31 Jul 2011
Transaction Log Backup Size in Bulk Logged Recovery Model
Assume that I have a database in Bulk Logged Recovery Model, and I perform a bulk operation that is minimally logged. Now, if I take a Log Backup, should not my Log Backup File Size be smaller than if I had performed the same operation in Full Recovery Model? I have seen many people confused by this...
29 Dec 2010
Revealing the secrets - Truncating a Transaction Log File
In my earlier blog post on Shrinking the Transaction Log files in SQL Server , I had mentioned that a VLF can be truncated only when all transactions, that have at least one command written into the specified VLF have either been committed or rolled back. While this is true, I understand that it might...
18 Jul 2009
Database Corruption Part 5 :: Dealing with Log File Corruption
Hi Friends, I am back again after a long time. Last month was the end of yet another financial year, and all of us were very busy with the processes involved with each year-end. Now that all those are completed, I could find some time for my next blog post on database corruption. Here, I will be targeting...
11 Jul 2009
Database Corruption Part 4 :: Recovering from a failed disk
It was a nice day a few days back - nice sunny day, with moderate temperatures. I got up early and after spending some time reading my favorite articles, made my way to office. In office, I realized I hadn't much work lying ahead; so sat down wondering how to account for my day. Suddenly the phone on...
18 May 2009
Database Corruption Part 1 :: Introduction to Database Corruption in SQL Server
Hello Everybody, I think you will all agree with me that database corruption is one of the nightmares in the life of a DBA. We store precious data in databases and each day the dataset grows bigger and bigger. A database corruption issue not only puts the data at risk, it also threatens to take a toll...
8 Apr 2009
Shrinking the Transaction Log files in SQL Server
Hi Friends! This blog post is mainly to address concerns about increasing log file space, and how to go about to shrink the file. I am adding a priliminary content here as of now, but I will update this content as and when I get time and new content to add. Question: What is a log file, and why...
16 Mar 2009
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