Autoridade_SQL_Server_Alerta_Ajusta_Trace_Flag_Performance ajuda na questão. Como chegar em um ambiente novo e dar resultados rápidos? Melhores práticas? garantia de evitação de bugs?
O que funciona em mais de 10 mil Bancos de Dados, no mundo, funcionará no seu ambiente? Dúvidas? mentor@clouddbm.com
O objetivo do kit DB de mentoria é que você consiga ter um set mínimo de scripts que automatizam e garantam um benchmarking de Bancos de Dados e você vai personalizando até o resultado esperado, mesmo em Bancos de Dados com mais de 15 Terabytes em que você precisará analisar todos os "bit and bytes" para a escalabilidade, a melhor metodologia é essa! Concluo com 20 anos de experiência e mais de 15 certificações que existem sim "atalhos" para uma vida tranquila,
atuando em suporte, desde que você faça muito bem o "dever de casa":
https://support.microsoft.com/en-ae/help/974006/sql-server-query-optimizer-hotfix-trace-flag-4199-servicing-model
https://blogs.msdn.microsoft.com/psssql/2015/03/02/running-sql-server-on-machines-with-more-than-8-cpus-per-numa-node-may-need-trace-flag-8048/
https://www.brentozar.com/archive/2017/02/using-trace-flag-2453-improve-table-variable-performance/
Grato,
Gilberto Rosa
CEO and Founder at www.CloudDBM.com
MCITP/MCTS/MCSE/MCTUSE [msdb]
GO
/****** Object: StoredProcedure [dbo].[spu_alerta_bloqueio] Script Date: 11/26/2018 3:40:50 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE proc [dbo].[spu_alerta_bloqueio] as
SET NOCOUNT ON
SELECT s.session_id
,r.STATUS
,r.blocking_session_id
,r.wait_type
,wait_resource
,r.wait_time / (1000.0) 'WaitSec'
,r.cpu_time
,r.logical_reads
,r.reads
,r.writes
,r.total_elapsed_time / (1000.0) 'ElapsSec'
,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
,Coalesce(Quotename(Db_name(st.dbid)) + N'.' + Quotename(Object_schema_name(st.objectid, st.dbid)) + N'.' + Quotename(Object_name(st.objectid, st.dbid)), '') AS command_text
,r.command
,s.login_name
,s.host_name
,s.program_name
,s.host_process_id
,s.last_request_end_time
,s.login_time
,r.open_transaction_count
INTO #temp_requests
FROM sys.dm_exec_sessions AS s
INNER JOIN sys.dm_exec_requests AS r ON r.session_id = s.session_id
CROSS APPLY sys.dm_exec_sql_text(r.sql_handle) AS st
WHERE r.session_id != @@SPID
and r.wait_time / (1000.0) > 60
ORDER BY r.cpu_time DESC
,r.STATUS
,r.blocking_session_id
,s.session_id
IF (
SELECT count(*)
FROM #temp_requests
WHERE blocking_session_id > 50
) <> 0
BEGIN
-- blocking found, sent email.
DECLARE @tableHTML NVARCHAR(MAX);
SET @tableHTML = N'<H1>Aten��o - Bloqueios a mais de 1 minuto no Banco de Dados</H1>' + N'<table border="1">' + N'<tr>' + N'<th>session_id</th>' + N'<th>Status</th>' +
N'<th>blocking_session_id</th><th>wait_type</th><th>wait_resource</th>' +
N'<th>WaitSec</th>' + N'<th>cpu_time</th>' +
N'<th>logical_reads</th>' + N'<th>reads</th>' +
N'<th>writes</th>' + N'<th>ElapsSec</th>' + N'<th>statement_text</th>' + N'<th>command_text</th>' +
N'<th>command</th>' + N'<th>login_name</th>' + N'<th>host_name</th>' + N'<th>program_name</th>' +
N'<th>host_process_id</th>' + N'<th>last_request_end_time</th>' + N'<th>login_time</th>' +
N'<th>open_transaction_count</th>' + '</tr>' + CAST((
SELECT td = s.session_id
,''
,td = r.STATUS
,''
,td = r.blocking_session_id
,''
,td = r.wait_type
,''
,td = wait_resource
,''
,td = r.wait_time / (1000.0)
,''
,td = r.cpu_time
,''
,td = r.logical_reads
,''
,td = r.reads
,''
,td = r.writes
,''
,td = r.total_elapsed_time / (1000.0)
,''
,td = 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)
,''
,td = Coalesce(Quotename(Db_name(st.dbid)) + N'.' + Quotename(Object_schema_name(st.objectid, st.dbid)) +
N'.' + Quotename(Object_name(st.objectid, st.dbid)), '')
,''
,td = r.command
,''
,td = s.login_name
,''
,td = s.host_name
,''
,td = s.program_name
,''
,td = s.host_process_id
,''
,td = s.last_request_end_time
,''
,td = s.login_time
,''
,td = r.open_transaction_count
FROM sys.dm_exec_sessions AS s
INNER JOIN sys.dm_exec_requests AS r ON r.session_id = s.session_id
CROSS APPLY sys.dm_exec_sql_text(r.sql_handle) AS st
WHERE r.session_id != @@SPID
AND blocking_session_id > 0
ORDER BY r.cpu_time DESC
,r.STATUS
,r.blocking_session_id
,s.session_id
FOR XML PATH('tr')
,TYPE
) AS NVARCHAR(MAX)) + N'</table>';
EXEC msdb.dbo.sp_send_dbmail @body = @tableHTML
,@body_format = 'HTML'
,@profile_name = N'E-MAIL 1'
,@recipients = N'monitoramento@clouddbm.com'
,@Subject = N'Bloqueio detectado - SERVIDOR BANCO DE DADOS'
END
DROP TABLE #temp_requests
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