SQL Server Mentalist

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

November 8, 2013 7:00 am

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

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

User Level to execute

200

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

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Posted by Vishal Pawar

Categories: Link, Microsoft SQL Server, MSBI, Optimization, Query, Script, SQL Mentalist, SQL PraRup, SQL Query, SQL Server, Technology,, TSQL, Vishal Pawar

Tags: DBA, Fast SQL, Microsoft SQL Server, SQL Help, SQL Mentalist, SQL Script, SQL Server, SQL Server 2008 R2, SQL Server 2012, SQL tips, SQL Tricks, TSQL, Vishal Pawar

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