Home > Link, Microsoft SQL Server, MSBI, Optimization, Query, Script, SQL Mentalist, SQL PraRup, SQL Query, SQL Server, Technology,, TSQL, Vishal Pawar > BI SQL # 196 : SQL Server DBA Scripts : Script to VLF count for all databases

BI SQL # 196 : SQL Server DBA Scripts : Script to VLF count for all databases

Hi Folks,

In this article we are going to cover How to Script to VLF count for all Databases.

In this post we are going to discuss following points:

  • Problem Statement of SQL Script:
  • Description of SQL Script:
  • SQL Script Output Column
  • SQL Script Code
  • SQL Script Output Screenshot
  • User Level to execute

    Problem Statement of SQL Script:

    Script to VLF count for all databases.

    Description of SQL Script:

    This Script shows list of VLF(virtual Log Files) counts for all databases in Current system.

    SQL Script Output Column

    clip_image001 clip_image002

    SQL Script Code

    DECLARE @query VARCHAR(100)
    DECLARE @dbname SYSNAME
    DECLARE @vlfs INT
    --table variable used to 'loop' over databases 
    DECLARE @databases TABLE (dbname SYSNAME)
    
    INSERT INTO @databases
    --only choose online databases 
    SELECT NAME
    FROM sys.databases
    WHERE STATE = 0
    
    --table variable to hold results 
    DECLARE @vlfcounts TABLE (
        dbname SYSNAME
        ,vlfcount INT
        )
    --table varioable to capture DBCC loginfo output 
    DECLARE @dbccloginfo TABLE (
        fileid TINYINT
        ,file_size BIGINT
        ,start_offset BIGINT
        ,fseqno INT
        ,[status] TINYINT
        ,parity TINYINT
        ,create_lsn NUMERIC(25, 0)
        )
    
    WHILE EXISTS (
            SELECT TOP 1 dbname
            FROM @databases
            )
    BEGIN
        SET @dbname = (
                SELECT TOP 1 dbname
                FROM @databases
                )
        SET @query = 'dbcc loginfo (' + '''' + @dbname + ''') '
    
        INSERT INTO @dbccloginfo
        EXEC (@query)
    
        SET @vlfs = @@rowcount
    
        INSERT @vlfcounts
        VALUES (
            @dbname
            ,@vlfs
            )
    
        DELETE
        FROM @databases
        WHERE dbname = @dbname
    END
    
    --output the full list 
    SELECT dbname
        ,vlfcount
    FROM @vlfcounts
    ORDER BY dbname

    SQL Script Output Screenshot

    image

    User Level to execute

      200

      Hope you will like to How to Script to VLF count for all Databases.

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