Saravanan Radhakrishnan


Saravanan Radhakrishnan is the senior production DBA for Revionics in Roseville, CA. He has more than 19 years of experience as a SQL Server DBA.

How to Dynamically Create and Maintain Table Partitions 1
Loading new data and purging old data from a table can take a lot of time if a large amount of data is involved. Here's an elegant partition solution that loads and purges data dynamically.
Stored Procedure Provides UPDATE STATISTICS Report
With this stored procedure, you can find out the last time the UPDATE STATISTICS statement was run against all the table indexes in a database.
Update the Statistics on Recently Modified Tables Only 4
Running UPDATE STATISTICS is important but can be time-consuming, especially if you have very large tables. Here's a stored procedure that updates statistics only on those tables where the data has been recently changed, saving time and resources.
T-SQL Statement Tracks Transaction-Less Dates 3
A DBA was asked to produce a list of dates in which there were no transactions from a database that included only the dates in which there were transactions. Here's how he pulled it off.

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From the Blogs
Sep 29, 2015

Data Breaches and Insider Threats

I’ll sound a bit like Captain Obvious for bringing this up, but it’s important to remember that security encompasses a lot more than protecting sensitive data from the specter of outsider threats like hackers. Properly implemented security policies also account for threat-models that include insiders – or people within your organization....More
Sep 15, 2015

Setting Up Additional Checks to Ensure Regular Transaction Log Backups 1

There’s simply no way to overstate the importance of regular Transaction Log Backups. Not only do they help protect from disaster, but regular execution of T-Log backups on Full (and Bulk-Logged) Recovery databases helps keep thing “fit and trim”. Most of the time, setting up a Notification for when T-Log Backup Jobs fail is enough to let you know when something goes wrong....More
Sep 1, 2015

Stop Using INFORMATION_SCHEMA and SysObjects for Exists Checks 3

Code like this isn’t optimal: IF EXISTS(SELECT * FROM sys.objects WHERE name = N'TableToDrop' AND type = 'U')         DROP TABLE TableToDrop; GO Neither is this: IF EXISTS(SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'TableToDrop')         DROP TABLE TableToDrop; GO Yet, I see both of those used all of the time – over and over again. Even though it’s 2015.  ...More
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