John F. Tamburo


SQLServerCentral Article

Database Cloning Tools in Lower Environments

With exciting products like SQL Clone making their debut, the DBA will need to think through the approach to implementing such powerful tools. Done properly, these tools will provide a massive benefit to both the DBA and developer.

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2019-05-10 (first published: )

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SQLServerCentral Article

Understanding Peer-to-Peer Transactional Replication, Part 3

We've gone through the basics of Peer-to-Peer Transactional Replication (PPTR). Now, we will blow it up! We will then fix it and show you how you how to triage and repair PPTR. When you remain calm and take some easy steps, you can stabilize PPTR with ease.

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2019-01-04 (first published: )

2,984 reads

Technical Article

Understanding Peer-to-Peer Transactional Replication, Part 1

There are times when you need to share tables between servers, where the table may be updated in both places. Peer-to-Peer Transactional Replication gives you the ability to create a solution. I explain the benefits and the downfalls.

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2018-12-21 (first published: )

6,262 reads

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Question of the Day

The Read Committed Snapshot Isolation behaviour

I am currently working with Sql Server 2022 and AdventureWorks database. First of all, let's set the "Read Committed Snapshot" to ON:

use master;
go

alter database AdventureWorks set read_committed_snapshot on with no_wait;
go
Then, from Session 1, I execute the following code:
--Session 1
use AdventureWorks;
go

create table ##t1 (id int, f1 varchar(10));
go

insert into ##t1 values (1, 'A');
From another session, called Session 2, I open a transaction and execute the following update:
--Session 2
use AdventureWorks;
go

begin tran;
update ##t1 
set f1 = 'B'
where id = 1;
Now, going back to Session 1, what happens if I execute this statement?
--Session 1
select f1
from ##t1
where id = 1;
 

See possible answers