{"id":1520,"date":"2012-06-27T20:20:48","date_gmt":"2012-06-27T22:20:48","guid":{"rendered":"http:\/\/fabriciolima.net\/blog\/?p=1520"},"modified":"2016-07-24T10:23:00","modified_gmt":"2016-07-24T13:23:00","slug":"database-mirroring-operation-mode-high-safety-without-failover-parte-1","status":"publish","type":"post","link":"https:\/\/fabriciolima.net\/blog\/2012\/06\/27\/database-mirroring-operation-mode-high-safety-without-failover-parte-1\/","title":{"rendered":"Database Mirroring &#8211; Operation Mode High Safety Without Failover &#8211; Parte 1"},"content":{"rendered":"<p>Fala Pessoal,<\/p>\n<p>Nesse post come\u00e7o a testar como o Database Mirroring se comporta configurado com o Operation mode High Safety Without Automatic Failover.<\/p>\n<p>Inst\u00e2ncias participantes dos testes:<\/p>\n<p>1 &#8211; Instancia5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 &#8211; Servidor Principal, referenciado no texto por Servidor A<br \/>\n2 &#8211; Instancia5\\INST1\u00a0\u00a0\u00a0 &#8211; Servidor Mirror, referenciado no texto por Servidor B<\/p>\n<p>Nome da database espelhada: Mirror1<\/p>\n<p>Script de cria\u00e7\u00e3o da tabela Teste:<\/p>\n<p>CREATE TABLE [dbo].[Teste](<br \/>\n[Cod] [int] IDENTITY(1,1) NOT NULL,<br \/>\n[Data] [datetime] NULL default(getdate()),<br \/>\n[Texto] [varchar](4000) NULL )<\/p>\n<p>Loop de teste:<\/p>\n<p>while 1=1<br \/>\nbegin<br \/>\nif exists (select null from sys.databases where name = &#8216;MIRROR1&#8217; and state_desc = &#8216;ONLINE&#8217;)<br \/>\ninsert into mirror1..Teste(texto)<br \/>\nselect @@servername<\/p>\n<p>waitfor delay &#8217;00:00:01&#8242;<br \/>\nend<\/p>\n<p><strong>Nesse teste foi simulado um Failover manual do Servidor A para o Servidor B.<\/strong><\/p>\n<p>Com o Mirror configurado como abaixo:<\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1578\" title=\"Figura1\" src=\"https:\/\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura1.png\" alt=\"\" width=\"502\" height=\"80\" srcset=\"https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura1.png 502w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura1-300x48.png 300w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura1-410x65.png 410w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura1-100x16.png 100w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura1-275x44.png 275w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura1-20x3.png 20w\" sizes=\"auto, (max-width: 502px) 100vw, 502px\" \/><\/a><\/p>\n<p>Deixei o loop rodando no servidor A e fiz um failover manual com o comando: <strong>alter database mirror1 set partner failover<\/strong><\/p>\n<p>Se voc\u00ea executar esse comando no Servidor B (Mirror) o erro abaixo \u00e9 gerado. Logo, o failover manual deve ser executado no servidor A (Principal).<\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1579\" title=\"Figura2\" src=\"https:\/\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2.png\" alt=\"\" width=\"906\" height=\"54\" srcset=\"https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2.png 906w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2-300x18.png 300w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2-768x46.png 768w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2-700x42.png 700w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2-410x24.png 410w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2-100x6.png 100w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2-275x16.png 275w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura2-20x1.png 20w\" sizes=\"auto, (max-width: 906px) 100vw, 906px\" \/><\/a><\/p>\n<p>Ao fazer o failover no principal, temos um warning de que algumas transa\u00e7\u00f5es sofreram rollback e o loop que estava sendo executado para de executar:<\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1580\" title=\"Figura3\" src=\"https:\/\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3.png\" alt=\"\" width=\"608\" height=\"49\" srcset=\"https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3.png 608w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3-300x24.png 300w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3-600x49.png 600w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3-410x33.png 410w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3-100x8.png 100w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3-275x22.png 275w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura3-20x2.png 20w\" sizes=\"auto, (max-width: 608px) 100vw, 608px\" \/><\/a><\/p>\n<p>Em pouco tempo, o failover \u00e9 efetuado e o mirror fica como abaixo:<\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura4.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1581\" title=\"Figura4\" src=\"https:\/\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura4.png\" alt=\"\" width=\"499\" height=\"82\" srcset=\"https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura4.png 499w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura4-300x49.png 300w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura4-410x67.png 410w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura4-100x16.png 100w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura4-275x45.png 275w, https:\/\/fabriciolima.net\/blog\/wp-content\/uploads\/2012\/05\/Figura4-20x3.png 20w\" sizes=\"auto, (max-width: 499px) 100vw, 499px\" \/><\/a><\/p>\n<p>O servidor B assumiu o papel de principal e o servidor A de Mirror.<\/p>\n<p>Esse procedimento pode ser utilizado em instala\u00e7\u00f5es de Service Packs ou Migra\u00e7\u00f5es de Banco de Dados diminuindo o tempo de parada do SQL Server.<\/p>\n<p>Artigos relacionados:<\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/2012\/05\/15\/serie-de-posts-sobre-database-mirroring\/\" target=\"_blank\">S\u00e9rie de Posts sobre Database Mirroring<\/a><\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/2012\/05\/15\/database-mirroring-como-alterar-o-operation-mode\/\" target=\"_blank\">Database Mirroring \u2013 Como alterar o Operation Mode<\/a><\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/2012\/05\/23\/database-mirroring-testes-operation-mode-high-performance-parte-1\/\" target=\"_blank\">Database Mirroring \u2013 Operation Mode High Performance \u2013 Parte 1<\/a><\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/2012\/05\/28\/database-mirroring-operation-mode-high-performance-parte-2\/\" target=\"_blank\">Database Mirroring \u2013 Operation Mode High Performance \u2013 Parte 2<\/a><\/p>\n<p><a href=\"https:\/\/www.fabriciolima.net\/blog\/2012\/05\/31\/database-mirroring-operation-mode-high-performance-parte-3\/\" target=\"_blank\">Database Mirroring &#8211; Operation Mode High Performance &#8211; Parte 3<\/a><\/p>\n<p>At\u00e9 o pr\u00f3ximo teste com esse Operation Mode.<\/p>\n<p><b>Gostou desse Post?<\/b><\/p>\n<p>Cadastre seu e-mail para receber novos Posts e curta minha <a href=\"https:\/\/www.facebook.com\/FabricioLimaSolucoesemBancodeDados\/\" target=\"_blank\">P\u00e1gina no Facebook<\/a> para receber Dicas de Leituras e Eventos sobre SQL Server.<\/p>\n<p>Abra\u00e7os,<\/p>\n<p>Fabr\u00edcio Lima<\/p>\n<p>MCITP \u2013 Database Administrator<\/p>\n<p>Consultor e Instrutor SQL Server<\/p>\n<p>Trabalha com SQL Server desde 2006<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fala Pessoal, Nesse post come\u00e7o a testar como o Database Mirroring se comporta configurado com o Operation mode High Safety Without Automatic Failover. Inst\u00e2ncias participantes dos testes: 1 &#8211; Instancia5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 &#8211; Servidor Principal, referenciado no texto por Servidor A 2 &#8211; Instancia5\\INST1\u00a0\u00a0\u00a0 &#8211; Servidor Mirror, referenciado no texto por Servidor B Nome da database espelhada: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","jetpack_post_was_ever_published":false},"categories":[3,280],"tags":[604,606,391,23,607,372,613,611,612,610,608,616,49,33,50,34,605,609,614,615],"class_list":["post-1520","post","type-post","status-publish","format-standard","hentry","category-administracao-de-bd","category-virtual-pass-br","tag-alta-disponibilidade","tag-database-mirror","tag-database-mirroring","tag-dba","tag-espelhamento-de-banco-de-dados","tag-high-availability","tag-high-performance","tag-high-safety-with-automatic-failover","tag-high-safety-without-automatic-failover","tag-operation-mode","tag-perda-de-dados","tag-safety","tag-sql","tag-sql-server","tag-sql-server-2005","tag-sql-server-2008","tag-sql-server-mirror","tag-sql-server-online","tag-sys-database_mirroring","tag-witness"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Fala Pessoal, Nesse post come\u00e7o a testar como o Database Mirroring se comporta configurado com o Operation mode High Safety Without Automatic Failover. 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Inst\u00e2ncias participantes dos testes: 1 - Instancia5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 - Servidor Principal, referenciado no texto por Servidor A 2 - Instancia5\\INST1\u00a0\u00a0\u00a0 -\u2026","rel":"","context":"Em &quot;Administra\u00e7\u00e3o de Banco de Dados&quot;","block_context":{"text":"Administra\u00e7\u00e3o de Banco de Dados","link":"https:\/\/fabriciolima.net\/blog\/category\/sql-server\/administracao-de-bd\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-14.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1629,"url":"https:\/\/fabriciolima.net\/blog\/2012\/10\/31\/database-mirroring-operation-mode-high-safety-with-automatic-failover\/","url_meta":{"origin":1520,"position":1},"title":"Database Mirroring &#8211; Operation Mode High Safety with Automatic Failover","author":"Fabr\u00edcio Lima","date":"31 de outubro de 2012","format":false,"excerpt":"Fala Pessoal, A ideia desse teste \u00e9 verificar o tempo que o Database Mirroring leva para fazer um failover autom\u00e1tico de um servidor para o outro utilizando esse Operation mode. Inst\u00e2ncias participantes dos testes: 1 - Instancia5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 - Servidor Principal, referenciado no texto por Servidor A 2 - Instancia5\\INST1\u00a0\u00a0\u00a0 -\u2026","rel":"","context":"Em &quot;Administra\u00e7\u00e3o de Banco de Dados&quot;","block_context":{"text":"Administra\u00e7\u00e3o de Banco de Dados","link":"https:\/\/fabriciolima.net\/blog\/category\/sql-server\/administracao-de-bd\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/10\/Figura-1.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1631,"url":"https:\/\/fabriciolima.net\/blog\/2013\/01\/01\/database-mirroring-tirando-o-servidor-de-witness-do-mirror-em-caso-de-falha\/","url_meta":{"origin":1520,"position":2},"title":"Database Mirroring &#8211; Tirando o servidor de Witness do Mirror em caso de falha","author":"Fabr\u00edcio Lima","date":"1 de janeiro de 2013","format":false,"excerpt":"Ol\u00e1 Pessoal, Continuando a s\u00e9rie de posts sobre Database Mirroring que j\u00e1 tenho semi prontos (faltam mais 3 posts ap\u00f3s esse), segue mais um teste realizado. O objetivo desse teste \u00e9 provar que o servidor de produ\u00e7\u00e3o em um Mirror pode parar mesmo sem acontecer nenhum problema com ele. Em\u2026","rel":"","context":"Em &quot;Administra\u00e7\u00e3o de Banco de Dados&quot;","block_context":{"text":"Administra\u00e7\u00e3o de Banco de Dados","link":"https:\/\/fabriciolima.net\/blog\/category\/sql-server\/administracao-de-bd\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-1.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-1.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-1.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-1.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":1594,"url":"https:\/\/fabriciolima.net\/blog\/2012\/07\/18\/database-mirroring-operation-mode-high-safety-without-failover-parte-3\/","url_meta":{"origin":1520,"position":3},"title":"Database Mirroring &#8211; Operation Mode High Safety Without Failover &#8211; Parte 3","author":"Fabr\u00edcio Lima","date":"18 de julho de 2012","format":false,"excerpt":"Fala Pessoal, Neste post continuarei com o teste do Operation Mode High Safety Without Automatic Failover. Caso ainda n\u00e3o tenham visto os posts anteriores, sugiro que os leia antes de continuar: Database Mirroring \u2013 Operation Mode High Safety Without Failover \u2013 Parte 1 Database Mirroring \u2013 Operation Mode High Safety\u2026","rel":"","context":"Em &quot;Administra\u00e7\u00e3o de Banco de Dados&quot;","block_context":{"text":"Administra\u00e7\u00e3o de Banco de Dados","link":"https:\/\/fabriciolima.net\/blog\/category\/sql-server\/administracao-de-bd\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/07\/Figura-11.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1640,"url":"https:\/\/fabriciolima.net\/blog\/2012\/12\/03\/database-mirroring-tempo-failover-hs-with-automatic-failover-com-timeout\/","url_meta":{"origin":1520,"position":4},"title":"Database Mirroring &#8211; Tempo Failover &#8211; HS With Automatic Failover com Timeout","author":"Fabr\u00edcio Lima","date":"3 de dezembro de 2012","format":false,"excerpt":"Ol\u00e1 Pessoal, A ideia desse teste \u00e9 verificar o tempo que o Database Mirroring leva para fazer um failover autom\u00e1tico de uma inst\u00e2ncia para o outra utilizando esse Operation mode, entretanto, agora a op\u00e7\u00e3o set partner timeout 60 ser\u00e1 utilizada. Inst\u00e2ncias participantes dos testes: 1 - Instancia5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 - Servidor Principal,\u2026","rel":"","context":"Em &quot;Administra\u00e7\u00e3o de Banco de Dados&quot;","block_context":{"text":"Administra\u00e7\u00e3o de Banco de Dados","link":"https:\/\/fabriciolima.net\/blog\/category\/sql-server\/administracao-de-bd\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-15.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-15.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-15.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.fabriciolima.net\/blog\/wp-content\/uploads\/2012\/11\/Figura-15.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":1596,"url":"https:\/\/fabriciolima.net\/blog\/2012\/07\/16\/database-mirroring-error-the-command-failed-because-the-database-mirror-is-busy\/","url_meta":{"origin":1520,"position":5},"title":"Database Mirroring &#8211; Error: The Command Failed Because The Database Mirror Is Busy","author":"Fabr\u00edcio Lima","date":"16 de julho de 2012","format":false,"excerpt":"Fala Pessoal, Nesse post vou compartilhar com voc\u00eas um erro que encontrei em um dos meus testes com Database Mirroring. 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