EitanBlumin/Review SQL Instance Best Practices.sql

## Review SQL Instance Best Practices.sql
/*
Author: Eitan Blumin (t: @EitanBlumin | b: eitanblumin.com)
Date: February, 2019
Description:
This is a condensed SQL Server Checkup of most common and impactful best practices.
Some of the checks are based on BP_Check.sql in Tiger Toolbox (by Pedro Lopez)
*/
DECLARE
	@NumOfMinutesBackToCheck INT = 360,
	@MinutesBackToCheck INT = 360,
	@DaysBackToCheck INT = 10,
	@MinAdHocSizeInMB INT = 200,
	@MinAdHocPercent INT = 25,
	@FreespaceMinimumMB INT = 1024,
	@FreespaceMinimumPercent INT = 10,
	@UnsentLogThresholdKB INT = 2048,
	@UnrestoredLogThresholdKB INT = 2048,
	@TransactionDelayThresholdMil INT = 1000,
	@MaxSQLErrorLogSize INT = 100

SET NOCOUNT ON;
DECLARE @Alerts AS TABLE
(
	Category NVARCHAR(1000),
	SubCategory NVARCHAR(MAX),
	ObjectName NVARCHAR(MAX),
	Details NVARCHAR(MAX)
);


INSERT INTO @Alerts
SELECT 'Database Backup', 'Database has never been backed up', QUOTENAME(name), 'It''s recommended to have a backup plan for all databases, including user databases as well as the system databases MSDB and Master.'
FROM sys.databases AS db
WHERE database_id NOT IN (2,32767)
AND state_desc = 'ONLINE'
AND name NOT IN ('ReportServerTempDB', 'model')
AND NOT EXISTS
(SELECT NULL
FROM msdb..backupset
WHERE database_name = db.name)


INSERT INTO @Alerts
select 'Corruption', 'Automatic Page Repair Was Used in AlwaysOn',
'Database: ' + db_name(rep.database_id) + ' File: ' + fil.name
+ ' PageID: ' + CONVERT(varchar,rep.page_id)
, ' Error Type: '
+ CASE rep.error_type WHEN -1 THEN 'Hardware 823 Error' WHEN 1 THEN 'General 824 Error' WHEN 2 THEN 'Bad Checksum' WHEN 3 THEN 'Torn Page' ELSE 'Unknown - ' + CONVERT(varchar, rep.error_type) END
+ ' Page Status: ' + CASE rep.page_status WHEN 2 THEN 'Queued for Request from Partner' WHEN 3 THEN 'Request Sent to Partner' WHEN 4 THEN 'Queued for Automatic Page Repair' WHEN 5 THEN 'Automatic Page Repair Succeeded' WHEN 6 THEN 'Unable to Repair' ELSE 'Unknown - ' + CONVERT(varchar, rep.page_status) END
+ ' Modification Time: ' + CONVERT(varchar, rep.modification_time, 120)
from sys.dm_hadr_auto_page_repair AS rep
inner join sys.master_files AS fil
ON rep.database_id = fil.database_id
AND rep.file_id = fil.file_id
WHERE rep.modification_time >= DATEADD(minute, -@NumOfMinutesBackToCheck, GETDATE())

UNION ALL

select 'Corruption', 'Automatic Page Repair Was Used in DB Mirroring',
'Database: ' + db_name(rep.database_id) + ' File: ' + fil.name
+ ' PageID: ' + CONVERT(varchar,rep.page_id)
, ' Error Type: '
+ CASE rep.error_type WHEN -1 THEN 'Hardware 823 Error' WHEN 1 THEN 'General 824 Error' WHEN 2 THEN 'Bad Checksum' WHEN 3 THEN 'Torn Page' ELSE 'Unknown - ' + CONVERT(varchar, rep.error_type) END
+ ' Page Status: ' + CASE rep.page_status WHEN 2 THEN 'Queued for Request from Partner' WHEN 3 THEN 'Request Sent to Partner' WHEN 4 THEN 'Queued for Automatic Page Repair' WHEN 5 THEN 'Automatic Page Repair Succeeded' WHEN 6 THEN 'Unable to Repair' ELSE 'Unknown - ' + CONVERT(varchar, rep.page_status) END
+ ' Modification Time: ' + CONVERT(varchar, rep.modification_time, 120)
from sys.dm_db_mirroring_auto_page_repair AS rep
inner join sys.master_files AS fil
ON rep.database_id = fil.database_id
AND rep.file_id = fil.file_id
WHERE rep.modification_time >= DATEADD(minute, -@NumOfMinutesBackToCheck, GETDATE())


INSERT INTO @Alerts
SELECT 'Performance', 'Auto Create Statistics is OFF', name, 'Recommended to turn Auto Create Statistics ON'
FROM sys.databases
WHERE state_desc = 'ONLINE'
AND is_auto_create_stats_on = 0

UNION ALL

SELECT 'Performance', 'Auto Update Statistics is OFF', name, 'Recommended to turn Auto Update Statistics ON'
FROM sys.databases
WHERE state_desc = 'ONLINE'
AND is_auto_update_stats_on = 0


DECLARE @RecentBackups AS TABLE (PhysicalPath NVARCHAR(4000), DeviceName NVARCHAR(4000))
DECLARE @CurrFile NVARCHAR(4000), @Exists INT;

INSERT INTO @RecentBackups
SELECT DISTINCT physical_device_name, UPPER(SUBSTRING(physical_device_name, 0, CHARINDEX('\', physical_device_name, 3)))
FROM msdb.dbo.backupmediafamily AS bmf
INNER JOIN msdb.dbo.backupset AS bs
ON bmf.media_set_id = bs.media_set_id
WHERE bs.backup_start_date > DATEADD(dd, -@DaysBackToCheck, GETDATE())
AND physical_device_name IS NOT NULL

DECLARE Backups CURSOR LOCAL FAST_FORWARD FOR
SELECT PhysicalPath
FROM @RecentBackups

OPEN Backups
FETCH NEXT FROM Backups INTO @CurrFile

WHILE @@FETCH_STATUS = 0
BEGIN
	SET @Exists = 1;
	EXEC master.dbo.xp_fileexist @CurrFile, @Exists out;

	IF @Exists = 0
		DELETE FROM @RecentBackups WHERE PhysicalPath = @CurrFile;

	FETCH NEXT FROM Backups INTO @CurrFile
END

CLOSE Backups
DEALLOCATE Backups

INSERT INTO @Alerts
SELECT 'Database Backup', N'Backups and database files in the same physical volume'
, DeviceName
, N'The volumn Contains ' + CONVERT(nvarchar(4000), COUNT(DISTINCT bmf.PhysicalPath)) + N' backup file(s) and ' + CONVERT(nvarchar(4000), COUNT(DISTINCT mf.physical_name)) + N' database file(s).'
FROM @RecentBackups AS bmf
INNER JOIN sys.master_files AS mf
ON UPPER(SUBSTRING(physical_name, 0, CHARINDEX('\', physical_name, 3))) = DeviceName
WHERE ([database_id] > 3 OR [database_id] = 2) AND [database_id] <> 32767
GROUP BY DeviceName

DECLARE @MasterCmpt INT;
SELECT @MasterCmpt = cmptlevel FROM sysdatabases WHERE dbid = 1;

INSERT INTO @Alerts
SELECT 'Database Compatibility Mismatch', 'Database Compatibility: ' + CONVERT(nvarchar,cmptlevel) + N', Instance Compatibility: ' + CONVERT(nvarchar, @MasterCmpt), QUOTENAME(name)
, 'User Database Compatibility should be the same as Instance Compatibility'
FROM sysdatabases
WHERE cmptlevel <> @MasterCmpt

INSERT INTO @Alerts
SELECT 'General', 'Database Auto Close is ON', name, 'Strongly recommended to set Database Auto Close to OFF'
FROM sys.databases
WHERE state_desc = 'ONLINE'
AND is_auto_close_on = 1


INSERT INTO @Alerts
SELECT 'General', 'File Auto Growth is Disabled', 'File ' + QUOTENAME(name) + ' in database ' + QUOTENAME(DB_NAME(database_id)) + ' has Auto Growth disabled'
,'File Auto Growth should be ON (with a max size limit)'
FROM sys.master_files
WHERE growth = 0 AND type IN (0,1)


INSERT INTO @Alerts
SELECT 'Performance', 'Database Auto Shrink is ON', name, 'Strongly recommended to set Database Auto Shrink to OFF'
FROM sys.databases
WHERE state_desc = 'ONLINE'
AND is_auto_shrink_on = 1


INSERT INTO @Alerts
SELECT 'General', N'Database File(s) on Volume C'
, 'Database ' + DB_NAME([database_id]) + N': ' + physical_name
, 'Placing database files on the system volume puts the Operating System in danger when these files grow too much'
FROM sys.master_files AS mf
WHERE ([database_id] > 3 OR [database_id] = 2) AND [database_id] <> 32767
AND UPPER(SUBSTRING(physical_name, 0, CHARINDEX('\', physical_name, 3))) = 'C:'

-- Tiger Toolbox Recommendations:
-- backup compression default
-- clr enabled (only enable if needed)
-- lightweight pooling (should be zero)
-- max degree of parallelism
-- cost threshold for parallelism
-- max server memory (MB) (set to an appropriate value)
-- priority boost (should be zero)
-- remote admin connections (should be enabled in a cluster configuration, to allow remote DAC)
-- scan for startup procs (should be disabled unless business requirement, like replication)
-- min memory per query (default is 1024KB)
-- allow updates (no effect in 2005 or above, but should be off)
-- max worker threads (should be zero in 2005 or above)
-- affinity mask and affinity I/O mask (must not overlap)

DECLARE @sqlmajorver int, @systemmem int, @systemfreemem int, @maxservermem int, @numa_nodes_afinned int, @numa int
DECLARE @mwthreads_count int, @mwthreads int, @arch smallint, @sqlcmd nvarchar(4000)
DECLARE @MinMBMemoryForOS INT, @RecommendedMaxMemMB INT
SET @sqlmajorver = CONVERT(int, (@@microsoftversion / 0x1000000) & 0xff);
SET @arch = CASE WHEN @@VERSION LIKE '%<X64>%' THEN 64 WHEN @@VERSION LIKE '%<IA64>%' THEN 128 ELSE 32 END;

SELECT @maxservermem = CONVERT(int, [value]) FROM sys.configurations (NOLOCK) WHERE [Name] = 'max server memory (MB)';
SELECT @numa_nodes_afinned = COUNT (DISTINCT parent_node_id) FROM sys.dm_os_schedulers WHERE scheduler_id < 255 AND parent_node_id < 64 AND is_online = 1
SELECT @numa = COUNT(DISTINCT parent_node_id) FROM sys.dm_os_schedulers WHERE scheduler_id < 255 AND parent_node_id < 64;
SELECT @mwthreads = CONVERT(int, [value]) FROM sys.configurations WHERE [Name] = 'max worker threads'
SELECT @mwthreads_count = max_workers_count FROM sys.dm_os_sys_info;

IF @sqlmajorver = 9
BEGIN
	SET @sqlcmd = N'SELECT @systemmemOUT = t1.record.value(''(./Record/MemoryRecord/TotalPhysicalMemory)[1]'', ''bigint'')/1024,
	@systemfreememOUT = t1.record.value(''(./Record/MemoryRecord/AvailablePhysicalMemory)[1]'', ''bigint'')/1024
FROM (SELECT MAX([TIMESTAMP]) AS [TIMESTAMP], CONVERT(xml, record) AS record
	FROM sys.dm_os_ring_buffers (NOLOCK)
	WHERE ring_buffer_type = N''RING_BUFFER_RESOURCE_MONITOR''
		AND record LIKE ''%RESOURCE_MEMPHYSICAL%''
	GROUP BY record) AS t1';
END
ELSE
BEGIN
	SET @sqlcmd = N'SELECT @systemmemOUT = total_physical_memory_kb/1024, @systemfreememOUT = available_physical_memory_kb/1024 FROM sys.dm_os_sys_memory';
END
EXECUTE sp_executesql @sqlcmd, N'@systemmemOUT bigint OUTPUT, @systemfreememOUT bigint OUTPUT', @systemmemOUT=@systemmem OUTPUT, @systemfreememOUT=@systemfreemem OUTPUT;

SET @MinMBMemoryForOS = CASE WHEN @systemmem <= 2048 THEN 512
		WHEN @systemmem BETWEEN 2049 AND 4096 THEN 819
		WHEN @systemmem BETWEEN 4097 AND 8192 THEN 1228
		WHEN @systemmem BETWEEN 8193 AND 12288 THEN 2048
		WHEN @systemmem BETWEEN 12289 AND 24576 THEN 2560
		WHEN @systemmem BETWEEN 24577 AND 32768 THEN 3072
		WHEN @systemmem > 32768 THEN 4096
	END

SET @RecommendedMaxMemMB = @systemmem-@MinMBMemoryForOS-(@mwthreads_count*(CASE WHEN @arch = 64 THEN 2 WHEN @arch = 128 THEN 4 WHEN @arch = 32 THEN 0.5 END)-256)

INSERT INTO @Alerts
SELECT 'Performance', 'Not recommended instance configuration', 'Optimize for ad hoc workloads',
	CASE WHEN CurrentConfig = 0 THEN 'Optimize for ad hoc workloads is off, but recommended to be on'
			WHEN CurrentConfig = 1 THEN 'Optimize for ad hoc workloads is on, but recommended to be off'
	END
FROM (
SELECT
	AdHocSizeInMB = SUM(CAST((CASE WHEN usecounts = 1 AND LOWER(objtype) = 'adhoc' THEN size_in_bytes ELSE 0 END) as decimal(14,2))) / 1048576,
	TotalSizeInMB = SUM (CAST (size_in_bytes as decimal (14,2))) / 1048576,
	CurrentConfig = (select CONVERT(bit, value_in_use) from sys.configurations where [name] = 'optimize for ad hoc workloads')
FROM sys.dm_exec_cached_plans
) AS D
WHERE
(CurrentConfig = 1
AND (AdHocSizeInMB > @MinAdHocSizeInMB OR (AdHocSizeInMB / TotalSizeInMB) * 100 > @MinAdHocPercent)
)
OR
(CurrentConfig = 0
AND (AdHocSizeInMB < @MinAdHocSizeInMB AND (AdHocSizeInMB / TotalSizeInMB) * 100 < @MinAdHocPercent)
)

UNION ALL

SELECT 'General', 'Not recommended instance configuration', 'SQL Server Max Memory', Report
FROM
(
	SELECT 'MaxMem setting exceeds available system memory'
	WHERE @maxservermem > @systemmem
	UNION ALL
	SELECT 'Current MaxMem setting will leverage node foreign memory. Maximum value for MaxMem setting on this configuration is ' + CONVERT(NVARCHAR,(@systemmem/@numa) * @numa_nodes_afinned) + ' MB for a single instance'
	WHERE @numa > 1 AND (@maxservermem/@numa) * @numa_nodes_afinned > (@systemmem/@numa) * @numa_nodes_afinned
	UNION ALL
	SELECT 'Current MaxMem setting is too high. Recommended maximum value for MaxMem setting on this configuration is ' + CONVERT(nvarchar(1000), @RecommendedMaxMemMB) + N' MB for a single instance'
	WHERE @numa <= 1 AND @maxservermem BETWEEN @RecommendedMaxMemMB AND @systemmem
) AS V(Report)

UNION ALL

SELECT 'General', 'Not recommended instance configuration', R.setting
, R.errormsg
+ N' (current value: ' + CONVERT(nvarchar, c.[value]) + N', recommended value: ' + CONVERT(nvarchar,R.recommendedvalue) + ')'
FROM sys.configurations AS c
CROSS APPLY
(
SELECT 'allow updates', 0, 'Direct System Catalog Updates is enabled'
UNION ALL SELECT 'automatic soft-NUMA disabled', 0, 'Auto Soft NUMA is disabled'
UNION ALL SELECT 'awe enabled', CASE WHEN @sqlmajorver < 11 AND @@VERSION NOT LIKE '%<X64>%' AND @@VERSION NOT LIKE '%<IA64>%' AND @systemmem >= 4000 THEN 1 WHEN @sqlmajorver > 10 THEN 0 END, 'AWE setting is not optimal for this instance'
UNION ALL SELECT 'backup compression default', 1, 'Backup Compression by default is not enabled'
UNION ALL SELECT 'default trace enabled', 1, 'Default trace setting is NOT enabled'
UNION ALL SELECT 'lightweight pooling', 0, 'Lightweight pooling setting is not the recommended value'
UNION ALL SELECT 'network packet size (B)', 4096, 'Network packet size is not the default value'
) AS R (setting, recommendedvalue, errormsg)
WHERE c.name = R.setting
AND CONVERT(int, c.[value]) <> R.recommendedvalue

UNION ALL

SELECT 'General', 'Not recommended instance configuration', 'Affinity Mask and Affinity I/O Mask',
'Current Affinity Mask and Affinity I/O Mask are overlaping'
FROM
(
SELECT
	affin = (SELECT CONVERT(int,[value]) FROM sys.configurations WHERE name = 'affinity mask'),
	affinIO = (SELECT CONVERT(int,[value]) FROM sys.configurations WHERE name = 'affinity I/O mask'),
	affin64 = (SELECT CONVERT(int, [value]) FROM sys.configurations WHERE name = 'affinity64 mask'),
	affin64IO = (SELECT CONVERT(int, [value]) FROM sys.configurations WHERE name = 'affinity64 I/O mask')
) AS V
WHERE (affin & affinIO <> 0) OR (affin & affinIO <> 0 AND affin64 & affin64IO <> 0)

UNION ALL

SELECT 'General', 'Not recommended instance configuration', 'Blocked Process Threshold'
,'Setting is not the recommended value. If not disabled, value should be higher than 4'
FROM
(
SELECT block_threshold = CONVERT(int,[value]) FROM sys.configurations WHERE name = 'blocked process threshold (s)'
) AS V
WHERE block_threshold > 0 AND block_threshold < 5

UNION ALL

SELECT 'General', 'Not recommended instance configuration', 'min memory per query (KB) and index create memory (KB)'
,'Index create memory should not be less than Min memory per query'
FROM
(
SELECT
	minmemqry = (SELECT CONVERT(int, [value]) FROM sys.configurations WHERE [Name] = 'min memory per query (KB)'),
	ixmem = (SELECT CONVERT(int, [value]) FROM sys.configurations WHERE [Name] = 'index create memory (KB)')
) AS V
WHERE ixmem > 0 AND ixmem < minmemqry

UNION ALL

SELECT 'Performance', 'Not recommended instance configuration', 'Max worker threads'
, R.errormsg
FROM
(
SELECT 'Max worker threads should not be larger than 2048 on a x64 system'
WHERE @mwthreads > 2048 AND @arch = 64
UNION ALL
SELECT 'Max worker threads should not be larger than 1024 on a x86 system'
WHERE @mwthreads > 1024 AND @arch = 32
) AS R(errormsg)

-- Check Failed Login Auditing

DECLARE @AuditLevel INT
EXEC   xp_instance_regread
@rootkey    = 'HKEY_LOCAL_MACHINE',
@key        = 'Software\Microsoft\MSSQLServer\MSSQLServer',
@value_name = 'AuditLevel',
@value      = @AuditLevel OUTPUT

-- Check SQL Default Port Using system registry (dynamic port):

DECLARE @portNo NVARCHAR(10)
EXEC   xp_instance_regread
@rootkey    = 'HKEY_LOCAL_MACHINE',
@key        =
'Software\Microsoft\Microsoft SQL Server\MSSQLServer\SuperSocketNetLib\Tcp\IpAll',
@value_name = 'TcpDynamicPorts',
@value      = @portNo OUTPUT

-- Using system registry (static port):

IF @portNo IS NULL
	EXEC   xp_instance_regread
	@rootkey    = 'HKEY_LOCAL_MACHINE',
	@key        =
	'Software\Microsoft\Microsoft SQL Server\MSSQLServer\SuperSocketNetLib\Tcp\IpAll',
	@value_name = 'TcpPort',
	@value      = @portNo OUTPUT

INSERT INTO @Alerts
SELECT 'Security', N'Not recommended instance security configuration', ObjectName, Report
FROM
(
SELECT N'TCPIP Port', N'SQL Sever port should not be the default 1433' WHERE @portNo = '1433'
UNION ALL SELECT N'Failed Logins Auditing', N'Failed Logins should be audited' WHERE @AuditLevel NOT IN (2,3)
UNION ALL SELECT N'SA login', N'SA server login should be renamed and/or disabled'
FROM sys.server_principals
WHERE sid = 0x01
AND name = 'sa'
AND is_disabled = 0

UNION ALL SELECT QUOTENAME(a.name), N'Security vulnerability detected in authentication settings of linked server (anyone can access it)'
FROM sys.Servers a
INNER JOIN sys.linked_logins b ON b.server_id = a.server_id
WHERE b.local_principal_id = 0
AND uses_self_credential = 0
AND a.server_id <> 0
) AS v(ObjectName, Report)

UNION ALL

SELECT 'Security', 'Not recommended instance security configuration',  R.setting
, R.errormsg
+ N' (current value: ' + CONVERT(nvarchar, c.[value]) + N', recommended value: ' + CONVERT(nvarchar,R.recommendedvalue) + ')'
FROM sys.configurations AS c
CROSS APPLY
(
SELECT 'clr enabled', 0, 'CLR Integration recommended to be disabled'
UNION ALL SELECT 'xp_cmdshell', 0, 'XP_CMDSHELL recommended to be disabled'
UNION ALL SELECT 'Ole Automation Procedures', 0, 'Ole Automation Procedures setting is not the recommended value'
UNION ALL SELECT 'remote admin connections', 1, 'DAC listener should be enabled on clustered servers' WHERE CONVERT(bit,SERVERPROPERTY('IsClustered')) = 1
UNION ALL SELECT 'remote admin connections', 0, 'DAC listener should be disabled on non-clustered servers' WHERE CONVERT(bit,SERVERPROPERTY('IsClustered')) = 0
) AS R (setting, recommendedvalue, errormsg)
WHERE c.name = R.setting
AND CONVERT(int, c.[value]) <> R.recommendedvalue


DECLARE @DBCC AS TABLE(
	RowId INT NOT NULL IDENTITY(1,1),
	ParentObject VARCHAR(255),
	[Object] VARCHAR(255),
	Field VARCHAR(255),
	[Value] VARCHAR(255)
);

INSERT INTO @DBCC
EXEC sp_MSFOREACHDB
'IF EXISTS (SELECT [name] FROM master.sys.databases WITH (NOLOCK) WHERE database_id NOT IN (2,3) AND is_read_only = 0 AND [state] = 0 AND [name] = ''?'')
BEGIN
	USE [?];
	DBCC DBINFO WITH TABLERESULTS, NO_INFOMSGS;
	SELECT NULL, ''DBINFO STRUCTURE'', ''DatabaseName'', DB_NAME();
END'

INSERT INTO @Alerts
SELECT
	N'Integrity Checks', b.SubCategpry, b.ObjectName, ErrorDescription
FROM
(
SELECT *
FROM
(
SELECT SubCategpry = 'Database needs purity checks'
, ObjectName = (SELECT TOP 1 c.[Value] FROM @DBCC AS c WHERE c.ParentObject IS NULL AND c.Field = 'DatabaseName' AND c.RowId > m.RowId ORDER BY c.RowID ASC)
, ErrorDescription = 'Please run DBCC CHECKDB on this database'
FROM @DBCC as m
WHERE Field = 'dbi_DBCCFlags' AND Value = 0
) AS a
WHERE ObjectName NOT IN ('master','model')

UNION ALL

SELECT SubCategpry = 'Database integrity checks have not been performed'
, ObjectName = (SELECT TOP 1 c.[Value] FROM @DBCC AS c WHERE c.ParentObject IS NULL AND c.Field = 'DatabaseName' AND c.RowId > m.RowId ORDER BY c.RowID ASC)
, ErrorDescription = 'Last known good DBCC CHECKDB: ' + ISNULL(NULLIF(CONVERT(VARCHAR(50),[Value],121), '1900-01-01 00:00:00.000'), 'never')
FROM @DBCC AS m
WHERE Field LIKE 'dbi_dbccLastKnownGood%'
AND ([Value] IS NULL OR CONVERT(datetime, [Value]) < DATEADD(dd,-7,GETDATE()))
) AS b


INSERT INTO @Alerts
SELECT 'General', 'Invalid database owner', QUOTENAME(db.name)
, 'Login may have been deleted, or the database was copied from another server. Please set a new valid owner for the database.'
FROM sys.databases db
LEFT JOIN sys.server_principals sp
ON db.owner_sid = sp.sid
WHERE sp.sid IS NULL
AND db.state = 0


INSERT INTO @Alerts
SELECT 'Automation', 'Missing Agent Alert(s)', 'Missing Agent Alert(s) for Severity ' + CONVERT(varchar(10), msgs.severity),
'Error ' + CONVERT(varchar(10), msgs.message_id) + ': ' + msgs.text
FROM
(
SELECT error as message_id, severity, description as text
FROM sysmessages
WHERE
msglangid = 1033 -- en-US
AND error IN (823,824,825,832,5180,8966,605,610,2511,5228,5229,5242,5243,5250,5572,9100,28036)
) AS msgs
LEFT JOIN msdb.dbo.sysalerts AS a
ON
	msgs.severity = a.severity
OR msgs.message_id = a.message_id
WHERE a.id is null


SET NOCOUNT ON;
DECLARE @db SYSNAME, @user NVARCHAR(MAX);
INSERT INTO @Alerts
exec sp_MsforEachDB '
IF EXISTS (SELECT * FROM sys.databases WHERE state_desc = ''ONLINE'' AND name = ''?'')
SELECT ''Security'', ''Orphaned User(s) in [?]'', dp.name
, CASE WHEN dp.name IN (SELECT name COLLATE database_default FROM sys.server_principals) THEN ''Login with same name already exists'' ELSE ''Login with same name was not found'' END
FROM [?].sys.database_principals AS dp
LEFT JOIN sys.server_principals AS sp ON dp.SID = sp.SID
WHERE sp.SID IS NULL
AND authentication_type_desc = ''INSTANCE''
;'


INSERT INTO @Alerts
SELECT 'General', 'DB Page Verification different from CHECKSUM', QUOTENAME(name), 'Current setting: ' + page_verify_option_desc
FROM sys.databases
where name NOT IN ('model','tempdb')
AND state = 0
AND page_verify_option_desc <> 'CHECKSUM'


INSERT INTO @Alerts
EXEC sp_MSforeachdb '
IF EXISTS (SELECT * FROM sys.databases WHERE state_desc = ''ONLINE'' AND name = ''?'')
AND OBJECT_ID(''[?].sys.database_query_store_options'') IS NOT NULL
SELECT ''Automation'', N''Query Store'',''?'', N''Query Store Capture is on but Auto Cleanup is off!''
FROM [?].sys.database_query_store_options
WHERE
	query_capture_mode <> 3 -- capture is on
AND size_based_cleanup_mode <> 1 -- cleanup is off
'


INSERT INTO @Alerts
SELECT 'General', N'@@SERVERNAME different from actual server name', N'@@SERVERNAME: ' + @@SERVERNAME, N'Actual server name: ' + CONVERT(nvarchar,SERVERPROPERTY('ServerName'))
WHERE @@SERVERNAME <> CONVERT(nvarchar,SERVERPROPERTY('ServerName'))


INSERT INTO @Alerts
SELECT 'Corruption', 'Suspect Page(s) Found in database ' + DB_NAME(database_id)
, N'File ID: ' + CONVERT(nvarchar(4000), [file_id])
+ N' Page ID: ' + CONVERT(nvarchar(4000), [page_id])
,
CASE event_type
	WHEN 1 THEN 'Error 823 or unspecified Error 824'
	WHEN 2 THEN 'Bad Checksum'
	WHEN 3 THEN 'Torn Page'
END
+ N' (Count: ' + CONVERT(nvarchar(4000), error_count)
+ N', Last Update: ' + CONVERT(nvarchar(4000), last_update_date, 121) + N')'
FROM msdb.dbo.suspect_pages WITH (NOLOCK)
WHERE event_type IN (1,2,3)


INSERT INTO @Alerts
EXEC sp_MSforeachdb '
IF EXISTS (SELECT * FROM sys.databases WHERE state_desc = ''ONLINE'' AND name = ''?'')
SELECT ''General'', ''Untrusted Check Constraint(s)'', ''?'', QUOTENAME(OBJECT_SCHEMA_NAME(parent_object_id, DB_ID(''?''))) + ''.'' + QUOTENAME(OBJECT_NAME(parent_object_id, DB_ID(''?''))) + ''.'' + QUOTENAME(name)
FROM [?].sys.check_constraints
WHERE is_not_trusted = 1 AND is_not_for_replication = 0 AND is_disabled = 0'


INSERT INTO @Alerts
EXEC sp_MSforeachdb '
IF EXISTS (SELECT * FROM sys.databases WHERE state_desc = ''ONLINE'' AND name = ''?'')
SELECT ''General'', ''Untrusted Foreign Key(s)'', ''?'', QUOTENAME(OBJECT_SCHEMA_NAME(parent_object_id, DB_ID(''?''))) + ''.'' + QUOTENAME(OBJECT_NAME(parent_object_id, DB_ID(''?''))) + ''.'' + QUOTENAME(name)
FROM [?].sys.foreign_keys
WHERE is_not_trusted = 1 AND is_not_for_replication = 0 AND is_disabled = 0'


INSERT INTO @Alerts
select 'General', 'Database is not online!', QUOTENAME(db.name),  'Database status is ' + db.state_desc
from sys.databases db
join sys.database_mirroring dm
on db.database_id = dm.database_id
where is_in_standby = 0 and is_read_only = 0
AND ISNULL(dm.mirroring_role,1) <> 2
AND state_desc <> 'ONLINE'


INSERT INTO @Alerts
select 'Automation', 'DB Mail Error', 'MailItemID ' + CONVERT(varchar, fi.mailitem_id),
' Recipient(s): "' + fi.recipients + ISNULL(';' + NULLIF(fi.copy_recipients,''),'') + ISNULL(';' + NULLIF(fi.blind_copy_recipients,''), '')
+ '", Subject: "' + fi.subject
+ '", Error Message: "' + el.description + '"'
from msdb.dbo.sysmail_event_log AS el
inner join msdb.dbo.sysmail_faileditems AS fi
ON el.mailitem_id = fi.mailitem_id
where el.event_type = 'error'
and el.log_date >= DATEADD(minute, -@MinutesBackToCheck, GETDATE())
order by el.log_date desc


IF OBJECT_ID('tempdb..#err_log_tmp') IS NOT NULL DROP TABLE #err_log_tmp;
CREATE TABLE #err_log_tmp (ArchiveNo int, CreateDate nvarchar(128), Size int);

INSERT INTO #err_log_tmp
EXEC master.dbo.sp_enumerrorlogs

DECLARE @currentlogid int, @createdate datetime, @currfilesize int;

SELECT TOP 1
		@currentlogid = er.ArchiveNo,
		@createdate = CONVERT(datetime, er.CreateDate, 101),
		@currfilesize = er.Size
FROM #err_log_tmp er
ORDER BY [ArchiveNo] ASC

DROP TABLE #err_log_tmp

IF ROUND(CONVERT(float,@currfilesize)/1024,2) > @MaxSQLErrorLogSize
BEGIN
	INSERT INTO @Alerts
	SELECT 'Performance', 'SQL Server Error Log Size Too Big'
	, 'SQL Server Error Log Size is ' + CONVERT(nvarchar(4000),ROUND(CONVERT(float,@currfilesize)/1024,2)) + N' MB.'
	, 'Please use sp_cycle_errorlog to cycle the Error Log periodically!'
END


DECLARE @drives TABLE (drive varchar(2), MBFree int)

INSERT INTO @drives
EXEC master.dbo.xp_fixeddrives;

INSERT INTO @Alerts
SELECT 'Resources', 'Free Disk Space',
'Disk ' + drive, 'Volume has only ' + CONVERT(varchar(50),MBfree) + ' MB free space'
FROM @drives
WHERE MBFree < @FreespaceMinimumMB
AND drive NOT IN ('Q');

INSERT INTO @Alerts
SELECT 'Resources', 'Free Disk Space',
'Disk ' + drive, 'Volume has only ' + CONVERT(varchar(5),CONVERT(float, percentfree)) + ' % free space'
FROM (
SELECT DISTINCT REPLACE(Stat.volume_mount_point, ':\', '') AS drive, ROUND(Stat.available_bytes * 100.0 / Stat.total_bytes, 2) AS percentfree
FROM sys.master_files AS dbfiles
CROSS APPLY sys.dm_os_volume_stats(dbfiles.database_id, dbfiles.file_id) AS Stat) AS D
WHERE D.percentfree < @FreespaceMinimumPercent


DECLARE @log AS TABLE
  (
   logdate DATETIME,
   info    VARCHAR (25) ,
   data    VARCHAR (200)
  );

INSERT INTO @log
EXECUTE sp_readerrorlog 0, 1, 'Login failed';

IF (SELECT count(*) AS occurences
	FROM   @log
	WHERE  logdate > dateadd(minute, -@MinutesBackToCheck, getdate())
	) >= 10
BEGIN
	INSERT INTO @Alerts
	SELECT 'Security', N'High Number of Failed Login Attempts', CONVERT(nvarchar(25), logdate, 121), data
	FROM   @log
	WHERE  logdate > dateadd(minute, -@MinutesBackToCheck, getdate())
END


IF OBJECT_ID ('tempdb..#IdentityColumns') IS NOT NULL DROP TABLE #IdentityColumns;
CREATE TABLE #IdentityColumns
(
	DatabaseName	SYSNAME,
	SchemaName		SYSNAME,
	TableName		SYSNAME,
	ColumnName		SYSNAME,
	LastValue		SQL_VARIANT,
	MaxValue		SQL_VARIANT,
	PercentUsed		DECIMAL(10, 2)
);

exec sp_MSforeachdb 'IF EXISTS (SELECT * FROM sys.databases WHERE name = ''?'' AND state_desc = ''ONLINE'')
INSERT INTO  #IdentityColumns(DatabaseName,SchemaName,TableName,ColumnName,LastValue,MaxValue,PercentUsed)
SELECT ''?'' DatabaseName,
	OBJECT_SCHEMA_NAME(identity_columns.object_id, DB_ID(''?'')) SchemaName, OBJECT_NAME(identity_columns.object_id, DB_ID(''?'')) TableName
	, columns.name ColumnName, Last_Value LastValue, Calc1.MaxValue, Calc2.Percent_Used
FROM		[?].sys.identity_columns WITH (NOLOCK)
INNER JOIN	[?].sys.columns WITH (NOLOCK) ON columns.column_id = identity_columns.column_id AND columns.object_id = identity_columns.object_id
INNER JOIN	[?].sys.types ON types.system_type_id = columns.system_type_id
CROSS APPLY (SELECT MaxValue = CASE WHEN identity_columns.max_length = 1 THEN 256 ELSE POWER(2.0, identity_columns.max_length * 8 - 1) - 1 END) Calc1
CROSS APPLY (SELECT Percent_Used = CAST(CAST(Last_Value AS FLOAT) *100.0/MaxValue AS DECIMAL(10, 2))) Calc2'

INSERT INTO @Alerts
SELECT 'General', 'Identity Overflow Alert', QUOTENAME(DatabaseName)
, QUOTENAME(SchemaName)+'.'+QUOTENAME(TableName)+'.'+QUOTENAME(ColumnName) + ' last value: ' + CONVERT(varchar(max), LastValue) + ' (' + CONVERT(varchar(max), PercentUsed) + ' %)'
FROM #IdentityColumns
WHERE PercentUsed >= 80

DROP TABLE #IdentityColumns;


INSERT INTO @Alerts
SELECT 'Automation', 'Invalid Job Owner', sj.name COLLATE database_default, N'Invalid Owner SID: ' + CONVERT(nvarchar(4000), sj.owner_sid, 1)
FROM msdb.dbo.sysjobs_view sj
LEFT JOIN master.dbo.syslogins sl ON sj.owner_sid = sl.sid
WHERE sj.enabled = 1
AND sl.sid IS NULL


INSERT INTO @Alerts
SELECT 'Automation', 'Failed Job(s)', jobs.name, ISNULL(jobServ.last_outcome_message,N'') + N' (' +
	CONVERT(nvarchar,msdb.dbo.[agent_datetime](last_run_date, last_run_time), 121) + N')'
FROM msdb..sysjobservers AS jobServ JOIN msdb..sysjobs AS jobs
ON jobServ.job_id = jobs.job_id
WHERE last_run_outcome IN (0,3)
AND last_run_date > 0 AND enabled = 1


IF OBJECT_ID('tempdb..#logshipstats') IS NOT NULL DROP TABLE #logshipstats;
CREATE TABLE #logshipstats
(
	[status]					bit,
	is_primary					bit,
	[server]					sysname,
	[database_name]				sysname,
	time_since_last_backup		int,
	last_backup_file			nvarchar(500),
	backup_threshold			int,
	is_backup_alert_enabled		bit,
	time_since_last_copy		int,
	last_copied_file			nvarchar(500),
	time_since_last_restore		int,
	last_restored_file			nvarchar(500),
	last_restored_latency		int,
	restore_threshold			int,
	is_restore_alert_enabled	bit
);

INSERT INTO #logshipstats
EXEC master..sp_help_log_shipping_monitor;

INSERT INTO @Alerts
SELECT 'HADR', 'Log Shipping Alert', [database_name] + ' (' + CASE is_primary WHEN 1 THEN 'Primary' ELSE 'Secondary' END + ')'
, CASE WHEN is_backup_alert_enabled = 1 AND time_since_last_backup > backup_threshold THEN
	'Backup Threshold Alert! Last File Backed up: ' + ISNULL(last_backup_file, '(null)')
	WHEN is_restore_alert_enabled = 1 AND time_since_last_restore > last_restored_latency THEN
	'Restore Threshold Alert! Last Restored File: ' + ISNULL(last_restored_file, '(null)')
	ELSE
	'Status is not healthy!'
	END
FROM #logshipstats
WHERE [status] = 1
OR (is_backup_alert_enabled = 1 AND time_since_last_backup > backup_threshold)
OR (is_restore_alert_enabled = 1 AND time_since_last_restore > last_restored_latency)


INSERT INTO @Alerts
SELECT 'Resources', 'Low SQL Memory Alert', CASE
	WHEN process_physical_memory_low = 1 AND process_virtual_memory_low = 1 THEN
		'Physical and Virtual'
	WHEN process_physical_memory_low = 1 THEN
		'Physical'
	WHEN process_virtual_memory_low = 1 THEN
		'Virtual'
	END + ' SQL Memory Low!'
	, 'You may need to increase SQL Max Memory setting, or add more RAM to the server'
FROM sys.dm_os_process_memory WITH (NOLOCK)
WHERE process_physical_memory_low = 1 OR process_virtual_memory_low = 1


INSERT INTO @Alerts
SELECT TOP 1 'Resources', 'Low Windows Memory Alert', 'Low Windows Memory Notification Detected'
, 'You may need to lower SQL Max Memory setting, or add more RAM to the server'
FROM (
	SELECT CAST(orb.record AS XML) AS xmlRec
	FROM sys.dm_os_ring_buffers AS orb
	CROSS JOIN sys.dm_os_sys_info AS osi
	WHERE
		orb.ring_buffer_type = 'RING_BUFFER_RESOURCE_MONITOR'
	AND DATEADD(second, -((osi.cpu_ticks/(osi.cpu_ticks/osi.ms_ticks) - orb.timestamp) / 1000), GETDATE()) > DATEADD(minute, -@MinutesBackToCheck, GETDATE())
) rb
CROSS APPLY rb.xmlRec.nodes('Record') rec(x)
WHERE rec.x.value('(ResourceMonitor/IndicatorsSystem)[1]','tinyint') = 2

IF OBJECT_ID('msdb.dbo.dbm_monitor_data') IS NOT NULL
BEGIN
	INSERT INTO @Alerts
	SELECT N'HADR',
	'Database Mirroring Alert ', DB_NAME(database_id) + ' (' + CASE [role] WHEN 1 THEN 'Principal' WHEN 2 THEN 'Mirror' ELSE RTRIM(STR([role])) END + ')'
	, CASE WHEN [status] NOT IN (2,4) THEN
		'Mirroring State is ' + CASE [status] WHEN 0 THEN 'Suspended' WHEN 1 THEN 'Disconnected' WHEN 3 THEN 'Pending Failover' ELSE RTRIM(STR([status])) END
		WHEN [witness_status] = 2 THEN
		'Witness Status is Disconnected' --RTRIM(STR([witness_status]))
		ELSE
			STUFF(
			  CASE WHEN [transaction_delay] > @TransactionDelayThresholdMil THEN ', Transaction Delay is ' + RTRIM(STR([transaction_delay])) ELSE '' END
			+ CASE WHEN [send_queue_size] > @UnsentLogThresholdKB THEN ', Unsent Log is ' + RTRIM(STR([send_queue_size])) ELSE '' END
			+ CASE WHEN [redo_queue_size] > @UnrestoredLogThresholdKB THEN ', Unrestored Log is ' + RTRIM(STR([redo_queue_size])) ELSE '' END
			, 1, 2, '')
	  END
	FROM
	(SELECT *, RankPerDB = ROW_NUMBER() OVER (PARTITION BY database_id ORDER BY [time] DESC) from msdb.dbo.dbm_monitor_data) as d
	WHERE RankPerDB = 1
	AND ([status] NOT IN (2,4) OR [witness_status] = 2
	OR [send_queue_size] > @UnsentLogThresholdKB
	OR [redo_queue_size] > @UnrestoredLogThresholdKB
	OR [transaction_delay] > @TransactionDelayThresholdMil)
END


DECLARE @passwords TABLE ([Deviation] NVARCHAR(100), [Name] sysname, [CreateDate] DATETIME)
DECLARE @word TABLE (word NVARCHAR(50))
INSERT INTO @word values
 ('0')
,('1')
,('12')
,('123')
,('1234')
,('12345')
,('123456')
,('1234567')
,('12345678')
,('123456789')
,('1234567890')
,('11111')
,('111111')
,('1111111')
,('11111111')
,('21')
,('321')
,('4321')
,('54321')
,('654321')
,('7654321')
,('87654321')
,('987654321')
,('0987654321')
,('pwd')
,('Password')
,('Password1')
,('password')
,('P@ssw0rd')
,('p@ssw0rd')
,('Teste')
,('teste')
,('Test')
,('Test1')
,('test')
,('')
,('p@wd')
,('qwerty')
,('Qwerty')

INSERT INTO @passwords
SELECT DISTINCT 'Weak or Common Password' AS Deviation, RTRIM(s.name) AS [Name], createdate AS [CreateDate]
FROM @word d
	INNER JOIN master.sys.syslogins s ON PWDCOMPARE(RTRIM(RTRIM(d.word)), s.[password]) = 1
UNION ALL
SELECT 'NULL Password' AS Deviation, RTRIM(name) AS [Name], createdate AS [CreateDate]
FROM master.sys.syslogins
WHERE [password] IS NULL
	AND isntname = 0
	AND name NOT IN ('MSCRMSqlClrLogin','##MS_SmoExtendedSigningCertificate##','##MS_PolicySigningCertificate##','##MS_SQLResourceSigningCertificate##','##MS_SQLReplicationSigningCertificate##','##MS_SQLAuthenticatorCertificate##','##MS_AgentSigningCertificate##','##MS_SQLEnableSystemAssemblyLoadingUser##')
UNION ALL
SELECT DISTINCT 'Login Name is the same as Password' AS Deviation, RTRIM(s.name) AS [Name], createdate AS [CreateDate]
FROM master.sys.syslogins s
WHERE PWDCOMPARE(RTRIM(RTRIM(s.name)), s.[password]) = 1
ORDER BY [Deviation], [Name]

INSERT INTO @Alerts
SELECT 'Security', 'Login Password Strength Check Failed', [Name], [Deviation]
FROM @passwords
ORDER BY [Deviation], [Name]


INSERT INTO @Alerts
EXEC sp_MSforeachdb '
IF EXISTS (SELECT * FROM sys.databases WHERE state_desc = ''ONLINE'' AND name = ''?'')
AND OBJECT_ID(''[?].sys.database_query_store_options'') IS NOT NULL
SELECT ''Automation'', ''Query Store Status Alert'', ''[?]'', N''Desired State is: '' + desired_state_desc + N'', Actual State: '' + actual_state_desc
FROM [?].sys.database_query_store_options
WHERE
(actual_state_desc = ''ERROR'' OR desired_state <> actual_state)
AND NOT EXISTS
(
SELECT ags.primary_replica, adc.*
FROM sys.availability_databases_cluster adc
INNER JOIN sys.dm_hadr_availability_group_states ags
ON adc.group_id = ags.group_id
WHERE adc.database_name = ''?''
AND ags.primary_replica <> @@SERVERNAME
);'


IF OBJECT_ID('distribution.sys.sp_replmonitorhelppublication') IS NOT NULL
BEGIN
	-- Check replication status
	DECLARE @temp_Pub TABLE (
			publisher_db sysname
			,publication sysname null
			,publication_id sysname null
			,publication_type int
			,status int
			,warning int
			,worst_latency int
			,best_latency int
			,average_latency int
			,last_distsync datetime
			,retention int
			,latencythreshold int
			,expirationthreshold int
			,agentnotrunningthreshold int
			,subscriptioncount int
			,runningdistagentcount int
			,snapshot_agentname sysname null
			,logreader_agentname sysname null
			,qreader_agentname sysname null
			,worst_runspeedPerf int
			,best_runspeedPerf int
			,average_runspeedPerf int
			,retention_period_unit tinyint
	);

	INSERT INTO @temp_Pub
	EXECUTE('EXEC distribution.sys.sp_replmonitorhelppublication');

	INSERT INTO @Alerts
	SELECT 'HADR', 'Replication Error(s)',
	'Publication status is Failed!', 'LogReader Agent: ' + logreader_agentname + ',  Snapshot Agent: ' + snapshot_agentname
	FROM @temp_Pub
	WHERE status = 6;

END


INSERT INTO @Alerts
SELECT 'Automation', 'SQLServerAgent Service', 'SQL Server Agent service is not running or connected!'
, 'Jobs and Alerts will not work until you start the SQL Server Agent service'
WHERE NOT EXISTS (SELECT * FROM master.dbo.sysprocesses WHERE program_name = 'SQLAgent - Generic Refresher')
AND CONVERT(nvarchar(200), SERVERPROPERTY('Edition')) NOT LIKE 'Express%'


DECLARE @cpucount int, @affined_cpus int
SELECT @cpucount = COUNT(cpu_id) FROM sys.dm_os_schedulers WHERE scheduler_id < 255 AND parent_node_id < 64
SELECT @numa = COUNT(DISTINCT parent_node_id) FROM sys.dm_os_schedulers WHERE scheduler_id < 255 AND parent_node_id < 64;
SELECT @affined_cpus = COUNT(cpu_id) FROM sys.dm_os_schedulers WHERE is_online = 1 AND scheduler_id < 255 AND parent_node_id < 64;

INSERT INTO @Alerts
SELECT 'Performance', 'Not recommended Max DOP setting'
, N'Recommended MaxDOP: ' + CONVERT(nvarchar, Recommended_MaxDOP)
+ N', Current MaxDOP: ' + CONVERT(nvarchar, Current_MaxDOP)
+ N', CPUs: ' + CONVERT(nvarchar, Available_Processors)
, Deviation
FROM
(
SELECT
	CASE WHEN [value] > @affined_cpus THEN 'MaxDOP setting exceeds available processor count (affinity)'
		WHEN @numa = 1 AND @affined_cpus > 8 AND ([value] = 0 OR [value] > 8) THEN 'MaxDOP setting is not recommended for current processor count (affinity)'
		WHEN @numa > 1 AND (@cpucount/@numa) < 8 AND ([value] = 0 OR [value] > (@cpucount/@numa)) THEN 'MaxDOP setting is not recommended for current NUMA node to processor count (affinity) ratio'
		WHEN @numa > 1 AND (@cpucount/@numa) >= 8 AND ([value] = 0 OR [value] > 8 OR [value] > (@cpucount/@numa)) THEN 'MaxDOP setting is not recommended for current NUMA node to processor count (affinity) ratio'
		ELSE '[OK]'
	END AS [Deviation],
	CASE WHEN [value] > @affined_cpus THEN @affined_cpus
		WHEN @numa = 1 AND @affined_cpus > 8 AND ([value] = 0 OR [value] > 8) THEN 8
		WHEN @numa > 1 AND (@cpucount/@numa) < 8 AND ([value] = 0 OR [value] > (@cpucount/@numa)) THEN @cpucount/@numa
		WHEN @numa > 1 AND (@cpucount/@numa) >= 8 AND ([value] = 0 OR [value] > 8 OR [value] > (@cpucount/@numa)) THEN 8
		ELSE 0
	END AS [Recommended_MaxDOP],
	[value] AS [Current_MaxDOP], @cpucount AS [Available_Processors], @affined_cpus AS [Affined_Processors]
FROM sys.configurations (NOLOCK) WHERE name = 'max degree of parallelism'
) AS a
WHERE Deviation <> '[OK]'
--OR [Current_MaxDOP] = 0
;


DECLARE @ifi bit
DECLARE @xp_cmdshell_output2 TABLE ([Output] VARCHAR (8000));
INSERT INTO @xp_cmdshell_output2
EXEC master.dbo.xp_cmdshell 'whoami /priv';

IF EXISTS (SELECT * FROM @xp_cmdshell_output2 WHERE [Output] LIKE '%SeManageVolumePrivilege%')
BEGIN
	SET @ifi = 1;
END
ELSE
BEGIN
	INSERT INTO @Alerts
	SELECT 'Performance' AS [Category], 'Instant File Initialization' AS [Check], 'Instant File Initialization is disabled.' AS ObjectName, 'This can negatively impact data file autogrowth times' AS [Deviation];
	SET @ifi = 0
END

DECLARE @tdb_files int, @online_count int, @filesizes smallint
SELECT @tdb_files = COUNT(physical_name) FROM sys.master_files (NOLOCK) WHERE database_id = 2 AND [type] = 0;
SELECT @online_count = COUNT(cpu_id) FROM sys.dm_os_schedulers WHERE is_online = 1 AND scheduler_id < 255 AND parent_node_id < 64;
SELECT @filesizes = COUNT(DISTINCT size) FROM tempdb.sys.database_files WHERE [type] = 0;

IF (SELECT CASE WHEN @filesizes = 1 AND ((@tdb_files >= 4 AND @tdb_files <= 8 AND @tdb_files % 4 = 0) /*OR (@tdb_files >= 8 AND @tdb_files % 4 = 0)*/
	OR (@tdb_files >= (@online_count / 2) AND @tdb_files >= 8 AND @tdb_files % 4 = 0)) THEN 0 ELSE 1 END) <> 0
BEGIN
	INSERT INTO @Alerts
	SELECT 'Performance', 'TempDB Configuration', 'TempDB Files',
		CASE WHEN @tdb_files < 4 THEN 'tempDB has only ' + CONVERT(VARCHAR(10), @tdb_files) + ' file(s). Consider creating between 4 and 8 tempDB data files of the same size, with a minimum of 4'
			WHEN @filesizes = 1 AND @tdb_files < (@online_count / 2) AND @tdb_files >= 8 AND @tdb_files % 4 = 0 THEN 'Number of Data files to Scheduler ratio might not be Optimal. Consider creating 1 data file per each 2 cores, in multiples of 4, all of the same size'
			WHEN @filesizes > 1 AND @tdb_files >= 4 AND @tdb_files % 4 > 0 THEN 'Data file sizes do not match and Number of data files is not multiple of 4'
			WHEN @filesizes = 1 AND @tdb_files >= 4 AND @tdb_files % 4 > 0 THEN 'Number of data files is not multiple of 4'
			WHEN @filesizes > 1 AND @tdb_files >= 4 AND @tdb_files % 4 = 0 THEN 'Data file sizes do not match'
			ELSE '[OK]' END AS [Deviation];
END;

--------------------------------------------------------------------------------------------------------------------------------
-- tempDB data files autogrow of equal size subsection
--------------------------------------------------------------------------------------------------------------------------------
IF (SELECT COUNT(DISTINCT growth) FROM sys.master_files WHERE [database_id] = 2 AND [type] = 0) > 1
	OR (SELECT COUNT(DISTINCT is_percent_growth) FROM sys.master_files WHERE [database_id] = 2 AND [type] = 0) > 1
BEGIN
	INSERT INTO @Alerts
	SELECT 'Performance' AS [Category], 'TempDB Configuration', 'Some tempDB data files have different growth settings' AS [Information],
		mf.name + N' (' + mf.type_desc + N'): '
		+ CONVERT(nvarchar, mf.[size]*8) + N' KB, auto growth: ' +
		CONVERT(nvarchar, CASE WHEN is_percent_growth = 1 THEN mf.growth ELSE mf.growth*8 END)
		+ CASE WHEN is_percent_growth = 1 THEN 'pct' ELSE 'pages' END
		+ N', next growth: ' + CONVERT(nvarchar, CASE WHEN is_percent_growth = 1 AND mf.growth > 0 THEN ((mf.size*8)*CONVERT(bigint, mf.growth))/100
			WHEN is_percent_growth = 0 AND mf.growth > 0 THEN mf.growth*8
			ELSE 0 END) + N', ' +
		CASE WHEN @ifi = 0 AND mf.type = 0 THEN 'Instant File Initialization is disabled'
			WHEN @ifi = 1 AND mf.type = 0 THEN 'Instant File Initialization is enabled'
			ELSE '' END
	FROM tempdb.sys.database_files mf (NOLOCK)
	WHERE [type] = 0
	GROUP BY mf.name, mf.[size], is_percent_growth, mf.growth, mf.type_desc, mf.[type]
END

SELECT *
FROM @Alerts
ORDER BY 1, 2, 3