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Figuring it out

Eitan Blumin EitanBlumin

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Figuring it out
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@EitanBlumin
EitanBlumin / GeneratePeriods_Inline.sql
Last active November 16, 2021 08:57
Table Function to generate periods for time series, based on an end date, period type, and number of periods back
/*
Author: Eitan Blumin (t: @EitanBlumin | b: https://eitanblumin.com)
Date Created: 2013-09-01
Last Update: 2020-07-28
Description:
CTE-based Inline Table Function to generate periods for time series, based on an end date, period type, and number of periods back.
Supported period types:
MI - Minute
H - Hour
@sql-williamd
sql-williamd / Relocate AG Database Files.ps1
Last active January 26, 2023 11:41
############## Setup ##############
$AGName = ''
$AGPrimary = ''
$AGSecondary = ''
# This allows you to process just a subset of databases using the name (wildcards are possible)
$DBNamePattern = 'AdventureW*'
$TargetFolder = 'K:\Data\'
@EitanBlumin
EitanBlumin / CHECKDB on non-readable AG secondaries.sql
Last active September 3, 2020 00:52
Run DBCC CHECKDB on all databases which are either standalone, or SECONDARY in AG. Supports non-readable secondaries by creating DB snapshots.
/*
Author: Eitan Blumin (t: @EitanBlumin | b: eitanblumin.com)
Date: March, 2020
Description:
Run DBCC CHECKDB on all databases which are either standalone, or SECONDARY in AG.
Supports non-readable secondaries by creating DB snapshots.
*/
DECLARE @CurrDB SYSNAME, @IsInAG BIT, @CMD NVARCHAR(MAX);
-- Find all databases which are either standalone, or SECONDARY in AG
@EitanBlumin
EitanBlumin / Find SHRINK sessions with lock info.sql
Last active July 8, 2023 06:32
SQL queries to troubleshoot a long-running DBCC SHRINK operation
/*
Author: Eitan Blumin | https://www.eitanblumin.com
Create Date: 2020-03-18
Description:
This script will detect currently running sessions in your database which are running DBCC SHRINK commands.
It will also output the name of any tables and indexes the session is currently locking.
Use this query to find out what causes a SHRINK to run for too long.
You may need to run it multiple times to "catch" the relevant info.
Optionally, set @RunUntilCaughtLockInfo to 1 to continuously run until a session with object lock info was caught.
@EitanBlumin
EitanBlumin / CaptureTSQLEvents_XE_Buffer.sql
Last active December 5, 2021 12:14
Collect T-SQL Events using an Extended Events Buffer
-- Author: Eitan Blumin (t: @EitanBlumin | b: eitanblumin.com)
-- Date: 2020-05-31
-- Last Update: 2021-04-22
-- Description: Collect T-SQL Events using an Extended Events Buffer
SET NOCOUNT ON;
DECLARE
@SourceLinkedServer SYSNAME
, @MinimumDurationMilliSeconds BIGINT
@EitanBlumin
EitanBlumin / extended_events_track_failed_logins.sql
Last active January 12, 2022 21:27
Extended event session to track all failed logins with full details (more info: https://eitanblumin.com/2020/03/09/finding-details-missing-sql-server-failed-logins-audit/ )
CREATE EVENT SESSION [TrackFailedLogins] ON SERVER
ADD EVENT sqlserver.error_reported(
    ACTION(sqlserver.client_app_name,sqlserver.client_hostname,sqlserver.nt_username,sqlserver.database_id,sqlserver.session_id)
WHERE (([severity]=(20) OR [severity]=(14) OR [severity]=(16))
AND ([error_number]=(18056)
OR [error_number]=(17892)
OR [error_number]=(18061)
OR [error_number]=(18452)
OR [error_number]=(11248)
OR [error_number]=(17806)
@EitanBlumin
EitanBlumin / Shrink_Database_File_in_Specified_Increments.sql
Last active September 3, 2021 14:46
Shrink a database file in specified increments down to a specific size or percentage of used space
/*
----------------------------------------------------------------------------
Shrink a Database File in Specified Increments
----------------------------------------------------------------------------
Author: Eitan Blumin (t: @EitanBlumin | b: eitanblumin.com)
Creation Date: 2020-01-05
Last Update: 2020-08-23
----------------------------------------------------------------------------
Description:
This script uses small intervals to shrink a file (in the current database)
@EitanBlumin
EitanBlumin / TempDB Sizing Check and Remediation.sql
Last active July 12, 2021 13:41
TempDB Sizing Check and Remediation script
/*
-----------------------------------
TempDB Sizing Check and Remediation
-----------------------------------
Author: Eitan Blumin | https://www.eitanblumin.com
Description:
This script makes sure that all TempDB files are equally sized, based on a calculation that takes into consideration
the disk volume where the TempDB files are located.
This check only works when TempDB files are isolated from other databases and exist on their own dedicated volume.
@EitanBlumin
EitanBlumin / helper_script_for_adding_schemabinding_to_scalar_functions.sql
Last active December 24, 2020 12:06
Helper T-SQL script for adding SCHEMABINDING on scalar functions (checks in ALL databases on the server)
/*
Author: Eitan Blumin | https://www.eitanblumin.com
Description:
Helper T-SQL script for adding SCHEMABINDING on scalar functions (checks in ALL databases on the server)
Added support for Azure SQL DB: Performs the same check across schemas instead of across databases
Instructions:
1. Run the script to detect all scalar functions with disabled SCHEMABINDING, that can potentially have it enabled.
@EitanBlumin
EitanBlumin / Check_Index_Fragmentation_Based_on_Page_Fullness_and_Fill_Factor.sql
Last active July 13, 2023 15:14
Check Index Fragmentation Based on Page Fullness and Fill Factor. Inspired by: https://www.erikdarlingdata.com/2019/10/because-your-index-maintenance-script-is-measuring-the-wrong-thing/
/**************************************************************************
Check Index Fragmentation based on Page Fullness and Fill Factor
***************************************************************************
Author: Eitan Blumin | https://www.eitanblumin.com
Version History:
2020-10-20 Added @MaxDOP parameter, and better comments & indentation
2020-01-07 First version
Description:
This script was inspired by Erik Darling's blog post here: