Notes on SQL

Random articles from a puzzled DBA

Introduction

Binary Large Objects (BLOB) data can be a graphical image, a pdf document, a music file or any of a wide range of data types, which can generally be saved into a SQL Server database.

As part of a series of investigations I’m currently performing within SQL Server, I have looked at how BLOB data can be saved and retrieved.

Saving the data is reasonably simple. Retrieving it, less so….

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Introduction

In a previous article article, I wrote about how to find out where the SQL Server error log is located. That particular article was in case your server instance did not start and you needed more information.

If your SQL Server instance is working, there is another way to find the location of the error logs – with a SQL query, which can then be used within PowerShell.

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Background
Whilst reading up on the finer details of High Availability Groups (HA Groups) I have discovered that it can, under certain circumstances, use Snapshot Isolation Level and therefore, row versioning. This has implications with your monitoring and maintenance tasks.
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