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SQL Server 2014: ONLINE operation on a single partition of partitioned object

Here I continue a series of articles devoted to new options in SQL Server 2014. Today let's review another useful operation - ONLINE rebuilding some partitions of partitioned objects (tables or indexes).First let me remind you that some versions of SQL Server (Enterprise, Evaluation, Developer) allow you to perform a number of operations in ONLINE mode. The main advantage of this mode is that we can create / change index and keep on working with the data (including changing these data) at the same time.This happens due to the fact that schema lock (Sch-M) is not retained throughout creation / changing process. Here you can find a more complete list of options supported by different versions:

Forrards
March 30, 2023
SQL Server Enterprise Edition Advanced Scanning

It is widely known that SQL Server Enterprise Edition contains a range of improvements, which under certain conditions allow you to perform operations in a more optimal way in comparison with Standard Edition. One of these improvements is Advanced Scanning, which allows multiple scans to share one physical read from the disk. You can also come across another name of this feature - Merry-go-Round Scan.

Forrards
March 30, 2023
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Forgot sa password for your SQL Server?

It may happen so that you don`t know the password of sa user for SQL Server you inherited from somebody. Actually it can happen cause of many reasons. We`ll try to resolve this issue now.So here is a step by step guide for resetting forgotten sa password.

Forrards
March 31, 2023
Boost your OLTP database performance with SQL Server 2014 in-memory tables

Today we can already say with certainty that the most striking innovation in the MS SQL 2014 is the In-Memory OLTP. In-Memory OLTP (project Hekaton) functionality was designed to expedite the processing of typical OLTP-operation in SQL Server. As you know, server load can be divided into two classes: data collection and analysis of what is collected. The first class of problems called OLTP (On-Line Transactional Processing). It is characterized by a short updating transaction affecting a relatively small number of tables in the database. The second class of problems called OLAP (On-Line Analytical Processing) and is characterized by massive prolonged reading, covers a large number of tables and collecting of them, as a rule, the maximum entries. In-Memory OLTP - fully transactional technology and supports failover.

Forrards
March 31, 2023

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