SQL Server Health Check Script with Powershell

Atul_Kapoor

4.82/5 (13 votes)

Dec 3, 2014

CPOL

3 min read

157135

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Perform SQL Server Instance health check simultaneously on more than one server using Powershell

Download source - 6.3 KB

Introduction

This tip shows you how to perform SQL Server Instance health check simultaneously on more than one server using Powershell, output is provided in HTML file/s and also emailed to your Email-ID.

It runs for all SQL Server instances above SQL Server 2005.

Background Summary

We have many junior DBAs in our team who often perform SQL Server instance/s health check at a particular time on demand basis (or scheduled basis) and after that, they need to report the same to application teams. We did not have a common standard report so we created this health check script report.

Code / Report Description

Health Check Report has various sections as listed below:

Section 0: This section defines our HTML look for the report.

Section 1: This section extracts the SQL Server properties like SQL Server Name, SQL Server Version, Edition, Machine Name and Node on which SQL Server is running and put in HTML fragment.

Section 2: This section extracts SQL Agent Service Information like Running or Not Running and puts in HTML fragment.

Section 3: This section extracts all database status, if any database state is not online, it will display here otherwise it will say all DBs are online and put the comments in HTML fragment.

Section 4: This section extracts any SQL job which has failed in the last 24 hours and put in HTML fragment.

Section 5: This section extracts all databases which has not been backed up (either differential or full) in the last 24 hours and puts the comments in HTML fragment.

Section 6: This section extracts all errors encountered in SQL Server error log in the last 24 hours and puts the comments in HTML fragment.

Section 7: This section extracts CPU information on the server, defines how many logical / physical CPUs we have and the hyperthread ratio we have on the server with how much memory is allocated to the Server and puts all the information in HTML fragment.

Section 8: This section extracts memory allocation on the server. It has three sections and puts that in HTML fragments:

Memory given and currently used by SQL Server Instance
Top 10 Memory Consuming SQL Objects in that particular SQL Instance
SQL Instance is having Memory Issues or not

Section 9: This section extracts Top 10 Long Running Queries in SQL Server and puts that in HTML fragments.

Section 10: This section extracts Top 10 CPU Consuming Query in SQL Server and put that in HTML fragments.

Section 11: This section extracts Top 10 IO Consuming Query in SQL Server and put that in HTML fragments.

Section 12: This section extracts CPU Pressure that exists on the server because of SQL Server or not and puts the comment in HTML fragment.

Section 13: This section extracts wait type events and their accumulative consumption in percentage on the SQL server and puts that data in HTML fragments.

Section 14: Accumulates all fragments, then converts the code in HTML and generates an HTML report which will be saved in location c:\dba_temp and emailed to your email id (please edit your email-id, SMTP server in section 13).

Prerequisites

Below are the prerequisites:

DB Mail needs to be configured:
- Get SMTP Server Name and email-id and edit in the code from line 680 - 693
You can the execute the below Powershell script attached using below syntaxPowershell.exe -File S:\Health_Check\SQL_Check_Report_version_1.ps1 SQLSERVERNAME\INSTANCENAME

PowerShell Code

Below is the attached Powershell code:

##Powershell Code Begins##

param(
[string]$servernames
)
Add-PSSnapin SqlServerCmdletSnapin110
Add-PSSnapin SqlServerProviderSnapin110
cls
write-host $servernames
$starttime = Get-Date
write-host $starttime
#$servernames=Read-Host "Please enter a SQL Server Name"
#$servernames = get-content C:\dba_temp\Server.txt
foreach($servername in $servernames)
{
write-host Starting Server $servername
$dataSource  =  $servername
##setup data source

$database = "master"                                 ##Database name
$TableHeader = "SQL Server Health Check Report"      ##The title of the HTML page
$path = "S:\Health_Check\Reports\"
$name = $dataSource -replace "\\","_"
$OutputFile_new = $path + $name + '.html'             ##The file location

$a = "<style>"
$a = $a + "BODY{background-color:white;}"
$a = $a + "TABLE{border-width: 1px;border-style: solid;border-color: black;border-collapse: collapse;}"
$a = $a + "TH{border-width: 1px;padding: 1px;border-style: solid;border-color: black;;background-color:thistle}"
$a = $a + "TD{border-width: 1px;padding: 0px;border-style: solid;border-color: black;}"
$a = $a + "</style>"

$colorTagTable = @{
                    Stopped = ' bgcolor="RED">Stopped<';
                    Running = ' bgcolor="Green">Running<';
                    OFFLINE = ' bgcolor="RED">OFFLINE<';
                    ONLINE  = ' bgcolor="Green">ONLINE<'
                    "ALL DATABASES ARE" = ' bgcolor="Green">ALL DATABASES ARE<'
                    "ALL Databases has been" = ' 
                    bgcolor="Green">ALL Databases has been<';
                    "backup" = ' bgcolor="Green">backup<';
                    "in Last 24 Hours" = ' bgcolor="Green">in Last 24 Hours<';
                    "No Job Failed in Last 24 Hours" = ' 
                    bgcolor="Green">No Job Failed in Last 24 Hours<';
                    "Error Log" = ' bgcolor="Green">Error Log<';
                    "check did not find out anything major" = ' 
                    bgcolor="Green">check did not find out anything major<';
                    "but will still advise to please verify manually" = ' 
                    bgcolor="Green">but will still advise to please verify manually<';
                    "Server Might Have Memory Issue"  = ' 
                    bgcolor="Red">Server Might Have Memory Issue<';
                   } 

##Create a string variable with all our connection details 
$connectionDetails = "Provider=sqloledb; " + "Data Source=$dataSource; 
" + "Initial Catalog=$database; " + "Integrated Security=SSPI;"


##**************************************
##Calculating SQL Server Information
##**************************************
$sql_server_info = "select @@servername as [SQLNetworkName], 
CAST( SERVERPROPERTY('MachineName') AS NVARCHAR(128)) AS [MachineName],
CAST( SERVERPROPERTY('ServerName')AS NVARCHAR(128)) AS [SQLServerName],
CAST( SERVERPROPERTY('IsClustered') AS NVARCHAR(128)) AS [IsClustered],
CAST( SERVERPROPERTY('ComputerNamePhysicalNetBIOS')AS NVARCHAR(128)) AS [SQLService_Current_Node],
serverproperty('edition') as [Edition],
serverproperty('productlevel') as [Servicepack],
CAST( SERVERPROPERTY('InstanceName') AS NVARCHAR(128)) AS [InstanceName],
SERVERPROPERTY('Productversion') AS [ProductVersion],@@version as [Serverversion]"

##Connect to the data source using the connection details and T-SQL command we provided above, 
##and open the connection
$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command1 = New-Object System.Data.OleDb.OleDbCommand $sql_server_info,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command1
$dataSet1 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet1)
$connection.Close()


##Return all of the rows and pipe it into the ConvertTo-HTML cmdlet, 
##and then pipe that into our output file
$frag1 = $dataSet1.Tables | Select-Object -Expand Rows |select -Property SQLNetworkName,
MachineName,SQLServerName,IsClustered,SQLService_Current_Node,Edition,Servicepack,InstanceName,
ProductVersion,Serverversion  | ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>SQL Server Info</h2>'|Out-String


write-host $frag1

##**************************************
##SQL Server AGent Information Collection
##**************************************
$sqlserverAgent = "
IF EXISTS (SELECT * FROM tempdb.dbo.sysobjects WHERE ID = OBJECT_ID(N'tempdb..#sql_agent_state'))
BEGIN
drop table #sql_agent_state
    END
    declare @sql_agent_service varchar(128),@state_sql_agent varchar(20)
    create table #sql_agent_state(service_name varchar(128) default 'SQLAgent ' ,state varchar(20))
    insert into #sql_agent_state(state) exec xp_servicecontrol N'querystate',N'SQLServerAGENT'  
    --select service_name as ServiceName, state as Status from #sql_agent_state
    select service_name as ServiceName, replace(state,'.','') as Status from #sql_agent_state
"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command2 = New-Object System.Data.OleDb.OleDbCommand $sqlserverAgent,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command2
$dataSet2 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet2)
$connection.Close()

$frag2 = $dataSet2.Tables | Select-Object -Expand Rows| Select -Property ServiceName,
Status|ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>SQL Server Agent Status</h2>'|Out-String

$colorTagTable.Keys | foreach { $frag2 = $frag2 -replace ">$_<",($colorTagTable.$_) }

write-host $frag2

##**************************************
##Database states
##**************************************
$SQLServerDatabaseState = "
IF EXISTS (SELECT * FROM tempdb.dbo.sysobjects WHERE ID = OBJECT_ID(N'tempdb..#tmp_database'))
BEGIN
drop table #tmp_database
END

declare @count int
declare @name varchar(128)
declare @state_desc varchar(128)

select @count = COUNT(*) from sys.databases where state_desc not in ('ONLINE','RESTORING')
create table #tmp_database (name nvarchar(128),state_desc nvarchar(128))
if @count > 0
        begin
            Declare Cur1 cursor for select name,state_desc from sys.databases 
            where state_desc not in ('ONLINE','RESTORING')
        open Cur1
            FETCH NEXT FROM Cur1 INTO @name,@state_desc
            WHILE @@FETCH_STATUS = 0
                BEGIN
                    insert into #tmp_database values(@name,@state_desc)
                FETCH NEXT FROM Cur1 INTO @name,@state_desc
                END
            CLOSE Cur1
            DEALLOCATE Cur1
        end
else 
    begin
        insert into #tmp_database values('ALL DATABASES ARE','ONLINE')
    end

select name as DBName ,state_desc as DBStatus from #tmp_database
"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command3 = New-Object System.Data.OleDb.OleDbCommand $SQLServerDatabaseState,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command3
$dataSet3 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet3)
$connection.Close()

$frag3 = $dataSet3.Tables | Select-Object -Expand Rows |Select -Property DBName,DBStatus | 
ConvertTo-HTML -AS Table -Fragment -PreContent '<h2>SQLServer Databases State</h2>'|Out-String

$colorTagTable.Keys | foreach { $frag3 = $frag3 -replace ">$_<",($colorTagTable.$_) }

write-host $frag3 


##**************************************
##SQL Job Status
##**************************************
$SQLJob = "
declare @count int
select @count = count(1) from msdb.dbo.sysjobs as sj 
join msdb.dbo.sysjobhistory as sjh on sj.job_id = sjh.job_id 
where sj.enabled != 0 
and sjh.sql_message_id > 0 
and sjh.run_date > CONVERT(char(8), (select dateadd (day,(-1), getdate())), 112)
and sjh.Step_id <= 1

if (@count >= 1)
begin
    select distinct sj.name as SQLJobName
    from msdb.dbo.sysjobs as sj 
    join msdb.dbo.sysjobhistory as sjh on sj.job_id = sjh.job_id 
    where sj.enabled != 0 
    and sjh.sql_message_id > 0 
    and sjh.run_date > CONVERT(char(8), (select dateadd (day,(-1), getdate())), 112)
    and sjh.Step_id <= 1
    order by name
end
else 
begin
    Select 'No Job Failed in Last 24 Hours' as SQLJobName
end

"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command4 = New-Object System.Data.OleDb.OleDbCommand $SQLJob,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command4
$dataSet4 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet4)
$connection.Close()

$frag4 = $dataSet4.Tables | Select-Object -Expand Rows |select -Property SQLJobName | 
ConvertTo-HTML -AS Table -Fragment -PreContent 
'<h2>SQLServer SQL Job failed in last 24 Hours</h2>'|Out-String

$colorTagTable.Keys | foreach { $frag4 = $frag4 -replace ">$_<",($colorTagTable.$_) }

write-host $frag4


##**************************************
##Database Backup in Last 24 Hours
##**************************************
$SQLServerDatabaseBackup = "
declare @backupcount int
select @backupcount = count(1)
 from sys.databases 
where state != 6 
and name not like 'Tempdb%' 
and name not in 
(
select database_name
from msdb.dbo.backupset as bkupset 
join msdb.dbo.backupmediafamily as bkupmedf on bkupset.media_set_id = bkupmedf.media_set_id 
where type in ('D','I')
and backup_start_date > (CONVERT(datetime,getdate()) - 1)
)

if (@backupcount >= 1)
begin
select name as DBName, State_Desc as DBStatus,'Backup Not happened' as DBComments from sys.databases 
where state != 6 
and name not like 'Tempdb%' 
and name not in 
(
select database_name
from msdb.dbo.backupset as bkupset 
join msdb.dbo.backupmediafamily as bkupmedf on bkupset.media_set_id = bkupmedf.media_set_id 
where type in ('D','I')
and backup_start_date > (CONVERT(datetime,getdate()) - 1)
)
order by 1
end
else 
begin
Select 'ALL Databases has been' as DBName, 
'backup' as DBStatus ,'in Last 24 Hours' as DBComments
end
"
$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command5 = New-Object System.Data.OleDb.OleDbCommand $SQLServerDatabaseBackup,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command5
$dataSet5 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet5)
$connection.Close()

$frag5 = $dataSet5.Tables | Select-Object -Expand Rows |select -property DBName,
DBStatus,DBComments | ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>SQLServer Database Backup status in Last 24 Hours</h2>'|Out-String

$colorTagTable.Keys | foreach { $frag5 = $frag5 -replace ">$_<",($colorTagTable.$_) }

write-host $frag5


##**************************************
##SQL Server ErrorLog
##**************************************
$SQLServerErrorlog = "
declare @errorlogcount int
IF EXISTS (SELECT * FROM tempdb.dbo.sysobjects WHERE ID = OBJECT_ID(N'tempdb..#errorlog'))
BEGIN
DROP TABLE #errorlog
END
create table #errorlog(date_time datetime,processinfo varchar(123),Comments varchar(max))
insert into #errorlog exec sp_readerrorlog

select @errorlogcount = count(*) from #errorlog 
where date_time > (CONVERT(datetime,getdate()) - 0.5)
and Comments like '%fail%' 
and Comments like '%error%'
and processinfo not in ('Server','Logon')

if(@errorlogcount >= 1)
begin
select date_time as Date,processinfo as ProcessInfo, Comments from #errorlog 
where date_time > (CONVERT(datetime,getdate()) - 0.5)
and Comments like '%fail%' 
and Comments like '%error%'
and processinfo not in ('Server','Logon')
end
else
begin
select 'Error Log' as Date, 'check did not find out anything major' 
as ProcessInfo, 'but will still advise to please verify manually' as Comments
end
"


$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command6 = New-Object System.Data.OleDb.OleDbCommand $SQLServerErrorlog,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command6
$dataSet6 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet6)
$connection.Close()

$frag6 = $dataSet6.Tables | Select-Object -Expand Rows|select 
-Property Date,processinfo,Comments | ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>SQLServer ErroLog Information</h2>'|Out-String

$colorTagTable.Keys | foreach { $frag6 = $frag6 -replace ">$_<",($colorTagTable.$_) }

write-host $frag6

##**************************************
##CPU information
##**************************************
$SQLServerCPUInformation = "declare @query2008r2_cpu nvarchar(max)
declare @query2012_cpu nvarchar(max)
set @query2008r2_cpu = 'SELECT cpu_count AS Logical_CPU_Count, 
hyperthread_ratio AS Hyperthread_Ratio,
            cpu_count/hyperthread_ratio AS Physical_CPU_Count,
            physical_memory_in_bytes/1024/1024 AS Physical_Memory_in_MB
            FROM sys.dm_os_sys_info'

set @query2012_cpu = 'SELECT cpu_count AS Logical_CPU_Count, 
hyperthread_ratio AS Hyperthread_Ratio,
            cpu_count/hyperthread_ratio AS Physical_CPU_Count,
            physical_memory_kb/1024/1024 AS Physical_Memory_in_MB
            FROM sys.dm_os_sys_info'


/*SQL Object Memory Allocation*/
declare @version nvarchar(128)
select @version = cast(SERVERPROPERTY('Productversion') as nvarchar(128))
if (@version like '11%')
    begin
        EXECUTE sp_executesql @query2012_cpu    
    end
    else
    begin
        EXECUTE sp_executesql @query2008r2_cpu
    end
"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command7 = New-Object System.Data.OleDb.OleDbCommand $SQLServerCPUInformation,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command7
$dataSet7 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet7)
$connection.Close()

$frag7 = $dataSet7.Tables | Select-Object -Expand Rows|select 
-Property Logical_CPU_Count,Hyperthread_Ratio,Physical_CPU_Count,
Physical_Memory_in_MB  | ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>CPU Information</h2>'|Out-String
write-host $frag7

##**************************************
##SQL Server Memory Infomration
##**************************************

## 1. Memory Allocated to SQL Server

$SQLServerMemoryAllocated = "SELECT --object_name,
counter_name as Counter, cntr_value/1024 as MemoryLimitSet_inMB 
FROM sys.dm_os_performance_counters
WHERE counter_name IN ('Total Server Memory (KB)', 'Target Server Memory (KB)');"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command8 = New-Object System.Data.OleDb.OleDbCommand $SQLServerMemoryAllocated,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command8
$dataSet8 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet8)
$connection.Close()

$frag8 = $dataSet8.Tables | Select-Object -Expand Rows|select 
-Property Counter,MemoryLimitSet_inMB | ConvertTo-HTML -AS Table 
-Fragment -PreContent '<h2>Memory Allocated to SQL Server</h2>'|Out-String
write-host $frag8


#2. Top 10 Memory Consuing Objects
$SqlServerMemortConsumingobjects = "declare @query2008r2_and_less nvarchar(max)
declare @query2012_and_more nvarchar(max)

set @query2008r2_and_less = 'select top 10 type as Object,
SUM(single_pages_kb+multi_pages_kb+virtual_memory_committed_kb+awe_allocated_kb)/1024 as Space_used_inMB
        from sys.dm_os_memory_clerks 
        group by type
        order by 2 desc'

set @query2012_and_more = 'select top 10 type as Object,
SUM(pages_kb+virtual_memory_committed_kb+awe_allocated_kb)/1024 as Space_used_inMB
        from sys.dm_os_memory_clerks 
        group by type
        order by 2 desc'

/*SQL Object Memory Allocation*/
declare @version nvarchar(128)
select @version = cast(SERVERPROPERTY('Productversion') as nvarchar(128))

if (@version like '11%')
    begin
        EXECUTE sp_executesql @query2012_and_more    
    end
    else
    begin
        EXECUTE sp_executesql @query2008r2_and_less
    end
"
$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command9 = New-Object System.Data.OleDb.OleDbCommand $SqlServerMemortConsumingobjects,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command9
$dataSet9 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet9)
$connection.Close()

$frag9 = $dataSet9.Tables | Select-Object -Expand Rows | select 
-Property Object,Space_used_inMB  | ConvertTo-HTML -AS Table 
-Fragment -PreContent '<h2>Top 10 Memory Consuming SQL Objects</h2>'|Out-String
write-host $frag9


#3.     
$sqlservermemorypressuredetection = "declare @totalmemoryused bigint
declare @bufferpool_allocated bigint
declare @query2008r2_total nvarchar(max)
declare @query2012_total nvarchar(max)
declare @version nvarchar(128)

Set @query2008r2_total  = 'select SUM
(single_pages_kb+multi_pages_kb+virtual_memory_committed_kb+awe_allocated_kb)/1024
from sys.dm_os_memory_clerks' 
 
set @query2012_total = 'select SUM(pages_kb+virtual_memory_committed_kb+awe_allocated_kb)/1024
from sys.dm_os_memory_clerks'

select @version = cast(SERVERPROPERTY('Productversion') as nvarchar(128))
--select @version
if (@version like '11%')
    begin
        create table #tmp (value bigint)
        insert into #tmp Execute (@query2012_total)    
        select @totalmemoryused = value from #tmp
        drop table #tmp
    end
else
    begin
        create table #tmp_1 (value bigint)
        insert into #tmp_1 Execute (@query2008r2_total)    
        select @totalmemoryused = value from #tmp_1
        drop table #tmp_1
    end

--select @totalmemoryused

select @bufferpool_allocated = cntr_value/1024
FROM sys.dm_os_performance_counters
WHERE counter_name IN ('Target Server Memory (KB)')

if (@bufferpool_allocated > @totalmemoryused)
    begin
        Select 'Server has no Memory Issue' as Comments
    end 
else 
    begin 
        select 'Server Might Have Memory Issue' as Comments
    end
"
$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command10 = New-Object System.Data.OleDb.OleDbCommand $sqlservermemorypressuredetection,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command10
$dataSet10 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet10)
$connection.Close()

$frag10 = $dataSet10.Tables | Select-Object -Expand Rows |select 
-Property Comments | ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>Server Have Memory Pressure or Not</h2>'|Out-String

$colorTagTable.Keys | foreach { $frag10 = $frag10 -replace ">$_<",($colorTagTable.$_) }

write-host $frag10


##**************************************
##Top 10 Long Running Queries
##**************************************
$LongRunningQueries = "
SELECT TOP 10 DB_NAME(qt.dbid) AS DBName,
o.name AS ObjectName,
qs.total_worker_time / 1000000 / qs.execution_count As Avg_MultiCore_CPU_time_sec,
qs.total_worker_time / 1000000 as Total_MultiCore_CPU_time_sec,
qs.total_elapsed_time / qs.execution_count / 1000000.0 AS Average_Seconds,
qs.total_elapsed_time / 1000000.0 AS Total_Seconds,
qs.execution_count as Count,
qs.last_execution_time as Time,
SUBSTRING (qt.text,qs.statement_start_offset/2,
(CASE WHEN qs.statement_end_offset = -1
THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2
ELSE qs.statement_end_offset END - qs.statement_start_offset)/2) AS Query
--,qt.text
--,qp.query_plan
FROM sys.dm_exec_query_stats qs
CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as qt
CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) AS qp
LEFT OUTER JOIN sys.objects o ON qt.objectid = o.object_id
where last_execution_time > getdate()-1
ORDER BY average_seconds DESC
"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command11 = New-Object System.Data.OleDb.OleDbCommand $LongRunningQueries,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command11
$dataSet11 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet11)
$connection.Close()

$frag11 = $dataSet11.Tables | Select-Object -Expand Rows|select 
-Property DBName,ObjectName,Avg_MultiCore_CPU_time_sec,
Total_MultiCore_CPU_time_sec,Average_Seconds,Total_Seconds,Count,
Time,Query| ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>Top 10 Long Running Query</h2>'|Out-String
write-host $frag11


##**************************************
##Top 10 CPU Consuming Query
##**************************************
$CPUConsumingQuery = "
SELECT TOP 10 DB_NAME(qt.dbid) as DBName,
    o.name AS ObjectName,
    qs.total_worker_time / 1000000 / qs.execution_count AS Avg_MultiCore_CPU_time_sec,
    qs.total_worker_time / 1000000 As Total_MultiCore_CPU_time_sec,
    qs.total_elapsed_time / 1000000 / qs.execution_count As Average_Seconds,
    qs.total_elapsed_time / 1000000 As Total_Seconds,
    (total_logical_reads + total_logical_writes) / qs.execution_count as Average_IO,
    total_logical_reads + total_logical_writes as Total_IO,    
    qs.execution_count as Count,
    qs.last_execution_time as Time,
    SUBSTRING(qt.[text], (qs.statement_start_offset / 2) + 1,
        (
            (
                CASE qs.statement_end_offset
                    WHEN -1 THEN DATALENGTH(qt.[text])
                    ELSE qs.statement_end_offset
                END - qs.statement_start_offset
            ) / 2
        ) + 1
    ) as Query
    --,qt.text
    --,qp.query_plan
FROM sys.dm_exec_query_stats AS qs
CROSS APPLY sys.dm_exec_sql_text(qs.[sql_handle]) AS qt
CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) AS qp
LEFT OUTER JOIN sys.objects o ON qt.objectid = o.object_id
where qs.execution_count > 5    --more than 5 occurrences
ORDER BY Total_MultiCore_CPU_time_sec DESC
"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command12 = New-Object System.Data.OleDb.OleDbCommand $CPUConsumingQuery,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command12
$dataSet12 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet12)
$connection.Close()

$frag12 = $dataSet12.Tables | Select-Object -Expand Rows |select 
-Property DBName,ObjectName,Avg_MultiCore_CPU_time_sec,
Total_MultiCore_CPU_time_sec,Average_Seconds,Total_Seconds,Average_IO,
Total_IO,Count,Time,Query | ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>Top 10 CPU Consuming Query</h2>'|Out-String
write-host $frag12


##**************************************
##Top 10 IO Consuming Query
##**************************************
$IOConsumingQuery = "
SELECT TOP 10 DB_NAME(qt.dbid) AS DBName,
o.name AS ObjectName,
qs.total_elapsed_time / 1000000 / qs.execution_count As Average_Seconds,
qs.total_elapsed_time / 1000000 As Total_Seconds,
(total_logical_reads + total_logical_writes ) / qs.execution_count AS Average_IO,
(total_logical_reads + total_logical_writes ) AS Total_IO,
qs.execution_count AS Count,
last_execution_time As Time,
SUBSTRING (qt.text,qs.statement_start_offset/2,
(CASE WHEN qs.statement_end_offset = -1
THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2
ELSE qs.statement_end_offset END - qs.statement_start_offset)/2) AS Query
--,qt.text
--,qp.query_plan
FROM sys.dm_exec_query_stats qs
CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as qt
CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) AS qp
LEFT OUTER JOIN sys.objects o ON qt.objectid = o.object_id
where last_execution_time > getdate()-1
ORDER BY average_IO DESC
"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command13 = New-Object System.Data.OleDb.OleDbCommand $IOConsumingQuery,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command13
$dataSet13 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet13)
$connection.Close()

$frag13 = $dataSet13.Tables | Select-Object -Expand Rows |Select 
-Property DBName,ObjectName,Average_Seconds,
Total_Seconds, Average_IO, Total_IO, Count, Time, Query | ConvertTo-HTML 
-AS Table -Fragment -PreContent '
<h2>Top 10 IO Consuming Query</h2>'|Out-String
write-host $frag13


##**************************************
##CPU Pressure
##**************************************
$CPUPressure = "
SELECT CAST(100.0 * SUM(signal_wait_time_ms) / 
SUM (wait_time_ms) AS NUMERIC(20,2)) AS Pct_Signal_CPU_Waits,
'if Perc_signal_cpu_waits is > 15%, it means we have CPU pressure' as Comment,
CAST(100.0 * SUM(wait_time_ms - signal_wait_time_ms) / 
SUM (wait_time_ms) AS NUMERIC(20,2)) AS Pct_Resource_Waits
FROM sys.dm_os_wait_stats
"

$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command14 = New-Object System.Data.OleDb.OleDbCommand $CPUPressure,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command14
$dataSet14 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet14)
$connection.Close()

$frag14 = $dataSet14.Tables | Select-Object -Expand Rows | select -Property Pct_Signal_CPU_Waits,Comment,
Pct_Resource_Waits | ConvertTo-HTML -AS Table -Fragment 
-PreContent '<h2>CPU Pressure Detection</h2>'|Out-String
write-host $frag14

##**************************************
##Wait Type % Calc
##**************************************

$WaitTimePercentage = "declare @totalwait_time_ms float
select @totalwait_time_ms  = sum(wait_time_ms) 
FROM sys.dm_os_wait_stats
where wait_time_ms > 0

select top 10 wait_type as WaitEvent,
    wait_time_ms/1000 as Time_inSec,
    round(100*(cast(wait_time_ms as float)/@totalwait_time_ms),2) as PctUsed
FROM sys.dm_os_wait_stats 
where wait_time_ms > 0
order by wait_time_ms desc
"
$connection = New-Object System.Data.OleDb.OleDbConnection $connectionDetails
$command15 = New-Object System.Data.OleDb.OleDbCommand $WaitTimePercentage,$connection
$connection.Open()

##Get the results of our command into a DataSet object, and close the connection
$dataAdapter = New-Object System.Data.OleDb.OleDbDataAdapter $command15
$dataSet15 = New-Object System.Data.DataSet
$dataAdapter.Fill($dataSet15)
$connection.Close()

$frag15 = $dataSet15.Tables | Select-Object -Expand Rows |select 
-Property WaitEvent,Time_inSec,PctUsed | ConvertTo-HTML -AS Table 
-Fragment -PreContent '<h2>Wait Type % Allocation on Server</h2>'|Out-String
write-host $frag15


##**************************************
##Final Code to Combine all fragments
##**************************************

ConvertTo-HTML -head $a -PostContent $frag1,$frag2,$frag3,$frag4,$frag5,
$frag6,$frag7,$frag8,$frag9,$frag10,$frag14,$frag15,$frag11,$frag12,$frag13 
-PreContent "<h1>SQL Server Heatlh Check Report</h1>" | Out-File $OutputFile_new

$smtpServer = "mx.XYZ.com"
$anonUsername = "anonymous"
$anonPassword = ConvertTo-SecureString -String "anonymous" -AsPlainText -Force
$anonCredentials = New-Object System.Management.Automation.PSCredential($anonUsername,$anonPassword)

$attachment = "$OutputFile_new"
$body= Get-Content $OutputFile_new
#write-host $body

$subject = "Health Check Report for Server: " + $servername

write-host "Sending email"

Send-MailMessage -to "abc@xyz.com" -from "DoNotReply@xyz.com" 
-SmtpServer "mx.xyz.com" -subject $subject -credential $anonCredentials 
-BodyAsHtml "$body" #-Attachments $attachment #$OutputFile_new


$Stoptime = Get-Date
Write-host $Stoptime

}
remove-variable starttime
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remove-variable SQLServerErrorlog
remove-variable SQLServerCPUInformation
remove-variable SQLServerMemoryAllocated
remove-variable SqlServerMemortConsumingobjects
remove-variable sqlservermemorypressuredetection
remove-variable LongRunningQueries
remove-variable CPUConsumingQuery
remove-variable IOConsumingQuery
remove-variable CPUPressure
remove-variable WaitTimePercentage
remove-variable smtpServer
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##Powershell Code Ends##