How To Find "Last Checkdb Run For All Databases" in SQL server

DECLARE @svr_name varchar(100)
select @svr_name = CAST(SERVERPROPERTY('ServerName')AS sysname)
CREATE TABLE #temp (
       Id INT IDENTITY(1,1), 
       ParentObject VARCHAR(255),
       [OBJECT] VARCHAR(255),
       Field VARCHAR(255),
       [VALUE] VARCHAR(255)
)

CREATE TABLE #DBCCRes (
       Id INT IDENTITY(1,1)PRIMARY KEY CLUSTERED,
       ServerName varchar(100), 
       DBName sysname ,
       dbccLastKnownGood DATETIME,
       RowNum INT
)

DECLARE
@DBName SYSNAME,
@SQL    VARCHAR(512);

DECLARE dbccpage CURSOR
LOCAL STATIC FORWARD_ONLY READ_ONLY
FOR SELECT name
FROM sys.databases
WHERE 1 = 1
AND STATE = 0
 
OPEN dbccpage;
FETCH NEXT FROM dbccpage INTO @DBName;
WHILE @@FETCH_STATUS = 0
BEGIN
SET @SQL = 'Use [' + @DBName +'];' + CHAR(10)+ CHAR(13)
SET @SQL = @SQL + 'DBCC Page ( ['+ @DBName +'],1,9,3) WITH TABLERESULTS;' + CHAR(10)+ CHAR(13)

INSERT INTO #temp
EXECUTE (@SQL);
SET @SQL = ''

INSERT INTO #DBCCRes
( ServerName,DBName, dbccLastKnownGood,RowNum )
SELECT @svr_name,@DBName, VALUE
, ROW_NUMBER() OVER (PARTITION BY Field ORDER BY VALUE) AS Rownum
FROM #temp
WHERE Field = 'dbi_dbccLastKnownGood';

TRUNCATE TABLE #temp;

FETCH NEXT FROM dbccpage INTO @DBName;
END
CLOSE dbccpage;
DEALLOCATE dbccpage;

SELECT ServerName,DBName,dbccLastKnownGood
FROM #DBCCRes
WHERE RowNum = 1;

DROP TABLE #temp
DROP TABLE #DBCCRes

When windows server last rebooted?

You will get this requirement very often, where you have to check that when and who rebooted windows server.

And you end up looking eventvwr logs which no doubt a tedious task and very oft you miss the required entries.

Windows give us “systeminfo” command which can help you to find same

Command: systeminfo | find /i "Boot Time"




Audit SQL modifications and get notified in SQL Server

USE [DBA]
GO

/****** Object:  DdlTrigger [object_change_notification]    Script Date: 11/11/2019 8:24:11 AM ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE TRIGGER [object_change_notification]
ON DATABASE
FOR CREATE_TABLE,DROP_TABLE,ALTER_TABLE,CREATE_VIEW,DROP_VIEW,ALTER_VIEW,CREATE_PROCEDURE,DROP_PROCEDURE,ALTER_PROCEDURE
AS

   Declare @Hostname varchar(20) = HOST_NAME()
   DECLARE @sys_usr char(30) SET @sys_usr = SYSTEM_USER
   Declare @executiontime datetime =getdate()
   DECLARE @data XML = EVENTDATA()
   DECLARE @eventType nvarchar(100)= CONCAT ('EVENT: ',@data.value('(/EVENT_INSTANCE/EventType)[1]', 'nvarchar(100)'),+ CHAR(13))
   DECLARE @TsqlCommand nvarchar(2000)=CONCAT('COMMAND:   ',@data.value('(/EVENT_INSTANCE/TSQLCommand)[1]', 'nvarchar(2000)'))
   DECLARE @BodyMsg nvarchar(2100)=CONCAT(@eventType , @sys_usr, @Hostname ,@executiontime , @TsqlCommand)

   EXEC msdb.dbo.sp_send_dbmail  
   @profile_name = 'ajaymail',  
   @recipients = 'ajeyudu.eee@gmail.com',  
   @body =@BodyMsg,
   @subject = 'The following object(s) was/were changed';



GO

ENABLE TRIGGER [object_change_notification] ON DATABASE
GO


Transaction Filling Log Space in SQL Server

Today while working I encounter one of query's to find log space used  by a transaction

Transaction causing log space filled most in database

/***************************************************************************************************/
SELECT tst.[session_id],
s.[login_name] AS [Login Name],
DB_NAME (tdt.database_id) AS [Database],
tdt.[database_transaction_begin_time] AS [Begin Time],
tdt.[database_transaction_log_record_count] AS [Log Records],
tdt.[database_transaction_log_bytes_used] AS [Log Bytes Used],
tdt.[database_transaction_log_bytes_reserved] AS [Log Bytes Rsvd],
SUBSTRING(st.text, (r.statement_start_offset/2)+1,
((CASE r.statement_end_offset
WHEN -1 THEN DATALENGTH(st.text)
ELSE r.statement_end_offset
END - r.statement_start_offset)/2) + 1) AS statement_text,
st.[text] AS [Last T-SQL Text],
qp.[query_plan] AS [Last Plan]
FROM sys.dm_tran_database_transactions tdt
JOIN sys.dm_tran_session_transactions tst
ON tst.[transaction_id] = tdt.[transaction_id]
JOIN sys.[dm_exec_sessions] s
ON s.[session_id] = tst.[session_id]
JOIN sys.dm_exec_connections c
ON c.[session_id] = tst.[session_id]
LEFT OUTER JOIN sys.dm_exec_requests r
ON r.[session_id] = tst.[session_id]
CROSS APPLY sys.dm_exec_sql_text (c.[most_recent_sql_handle]) AS st
OUTER APPLY sys.dm_exec_query_plan (r.[plan_handle]) AS qp
where DB_NAME (tdt.database_id) = 'tempdb'ORDER BY [Log Bytes Used] DESC;

/***************************************************************************************************/

------> Please modify database name

TOP 5 CPU-CONSUMING STATEMENTS In SQL Server

  To quickly identifying which query is consuming more CPU can be found using below query.
/************************************/
SELECT TOP 5
qs.total_worker_time/(qs.execution_count*60000000) as [Avg CPU Time in mins],
qs.execution_count,
qs.min_worker_time/60000000 as [Min CPU Time in mins],
--qs.total_worker_time/qs.execution_count,
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_text,
dbname=db_name(qt.dbid),
object_name(qt.objectid) as [Object name]
FROM
sys.dm_exec_query_stats qs cross apply
sys.dm_exec_sql_text(qs.sql_handle) as qt
ORDER BY
[Avg CPU Time in mins] DESC
/************************************/