Row Versioning

Technical Article

Transaction locking and row versioning guide

  • Article

In any database, mismanagement of transactions often leads to contention and performance problems in systems that have many users. As the number of users that access the data increases, it becomes important to have applications that use transactions efficiently. This guide describes the locking and row versioning mechanisms the SQL Server Database Engine uses to ensure the physical integrity of each transaction and provides information on how applications can control transactions efficiently.

You rated this post out of 5. Change rating

2022-10-05

Technical Article

SQL Server 2005 Row Versioning-Based Transaction Isolation

  • Article

Microsoft SQL Server 2005 provides nonlocking, nonblocking read consistency to your users through snapshot isolation and read committed isolation using row versioning. Find out when you can use these features to improve performance and reduce latency in your applications.

You rated this post out of 5. Change rating

2009-05-01

2,535 reads

Blogs

From DBA or Data Engineer to AI Engineer: A Realistic Path

By

If you spend your days tuning queries, managing pipelines, or keeping a production database...

Asynchronous Replication of Snapshots from an ActiveCluster Pod to a Third Array

By

I’ve been rebuilding my three-site SQL Server demo lab, and I ran into something...

SQL Server gMSA: Why So Many DBAs Still Aren't Using It in 2026

By

SQL Server gMSA: Why DBAs Still Aren't Using It in 2026 ...

Read the latest Blogs

Forums

Never is Not the Policy

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Never is Not the Policy

Automating SSAS Multidimensional Security Audits with PowerShell

By Pablo Echeverria

Comments posted to this topic are about the item Automating SSAS Multidimensional Security Audits...

Rebuilding All Indexes

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Rebuilding All Indexes

Visit the forum

Question of the Day

Rebuilding All Indexes

I have added a few indexes to one of my tables in SQL Server 2025:

ALTER TABLE dbo.CustomerContact
ADD CONSTRAINT PK_CustomerContact
    PRIMARY KEY (CustomerID);

-- Create index on CustomerEmail
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (CustomerEmail);
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (phone);
I then do this to disable one index:
alter index IX_CustomerContact_CustomerPhone on dbo.CustomerContact disable
I see this when I check the index status:Index status for CustomerContactI decide to rebuild all indexes with this command:
ALTER INDEX ALL ON dbo.CustomerContact
After I do this, what will I see for the index status?

See possible answers