VLF | dbatools | Command-line superpowers for SQL Server automation

Get-DbaDbVirtualLogFile

Chrissy LeMaire (@cl), netnerds.net

Get-DbaDbVirtualLogFile View Source Chrissy LeMaire (@cl), netnerds.net Windows, Linux, macOS On this page: Synopsis · Description · Syntax · Examples · Parameters · Outputs Synopsis Retrieves detailed virtual log file (VLF) metadata from transaction logs for performance analysis and troubleshooting. Description This function uses DBCC LOGINFO to return detailed metadata about each virtual log file (VLF) within database transaction logs. The output includes VLF size, file offsets, sequence numbers, status, and parity information that’s essential for analyzing transaction log structure and performance.

Measure-DbaDbVirtualLogFile

Chrissy LeMaire (@cl), netnerds.net

Measure-DbaDbVirtualLogFile View Source Chrissy LeMaire (@cl), netnerds.net Windows, Linux, macOS On this page: Synopsis · Description · Syntax · Examples · Parameters · Outputs Synopsis Measures Virtual Log File (VLF) counts in transaction logs to identify performance bottlenecks Description Analyzes Virtual Log File (VLF) fragmentation across databases by counting total, active, and inactive VLFs in transaction logs. This function helps identify databases with excessive VLF counts that can severely impact performance.