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SQL Padawan

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Tag: database

March 20, 2018 database / sql server / transaction log

Simple way to understand transaction isolation levels

I was talking with a friend about how a database works and she asked me to explain transaction isolation levels

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March 18, 2018 database / sql server / storage / transaction log

Memory-optimized Logging

In a previous post I talked about transaction log works, and what about using a memory-optimized table? SQL Server has

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March 16, 2018 checkpoint / database / sql server / transaction log

What the Checkpoint does?

Checkpoints flush dirty data pages from the buffer cache of the current database to disk. This minimizes the active portion

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March 16, 2018 database / sql server / transaction log

VLF (Virtual Log Files)

To see how many VLFs you have solely look at the number of rows returned by DBCC LOGINFO. The size

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March 14, 2018 configuration / database / sql server / transaction log

There is insufficient system memory in resource pool

Doing crash and recovery tests on my local machine I got the SQL Server instance not going online. After trying

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February 20, 2018 database / sql server / transaction log

Logging

Every database has a transaction log that records all transactions and the database modifications made by each transaction The transaction

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February 15, 2018 sql server / statistics / wait

Wait wait wait…

Let’s talk about why we have to wait and how to understand the wait types. Paul Randal in his post

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November 22, 2017 database / linux / SQL Operations Studio / sql server / tools

SQL Operations Studio Linux

Great news, a visual way to manage SQL Server from Linux. SQL Operations Studio came to fill a gap we

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October 26, 2017 database / index / sql server / transaction log

How Update works?

Update data in SQL Server is a simple task. Using the command update table set column = value where column

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October 6, 2017 database / sql server / undocumented

SQL Server Undocumented 1

SQL Server has many undocumented functions and commands. I will write seriesĀ of posts with functions to have a library online.

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