Parameters are managed by file SqlWriterConfig.iniīecause SQL Writer is a SQL Server shared component, it has a single instance on a system, and its major version will be the same as the highest major version of any installed SQL Server instance.There's only one rollover file, so the second rollover would overwrite the existing SqlWriterLogger1.txt.This file gets renamed to SqlWriterLogger1.txt when reaching a maximum size (by default 1 MB), with logging continuing in main SqlWriterLogger.txt.Logging takes place in file SqlWriterLogger.txt.Its working directory is C:\Program Files\Microsoft SQL Server\90\Shared.
It's system-wide (it will trace SQL Writer activity against all SQL Server instances running on the server).The main characteristics of SQL Server 2019 (15.x) SQLWriter logging are: This functionality was also made available in SQL Server 2016 (13.x) Service Pack 3, and SQL Server 2017 (14.x) Cumulative Update (CU) 27. This article describes the new log introduced by SQL Server 2019 (15.x) to provide better visibility on its SQLWriter operations. Prior to SQL Server 2019 (15.x), there was no dedicated activity log, which made investigations against SQL Server as a participant in VSS operations challenging.
The service would report execution errors to Windows Application Event Logs with an event Source (or ProviderName in PowerShell or XML context) of value SQLWRITER, as you can see in the example later in this article. For more information, see SQL Server Back up Applications - Volume Shadow Copy Service (VSS) and SQL Writer. SQL Server can be involved in VSS (Volume Shadow Copy Service) backup and restore operations through its dedicated SQL Writer service.
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