{"id":8810,"date":"2026-04-05T11:38:14","date_gmt":"2026-04-05T14:38:14","guid":{"rendered":"https:\/\/executestep.com\/?p=8810"},"modified":"2026-04-05T11:38:16","modified_gmt":"2026-04-05T14:38:16","slug":"oracle-rac-12c-vmware-intro","status":"publish","type":"post","link":"https:\/\/executestep.com\/pt-br\/oracle\/oracle-rac-12c-vmware-intro\/","title":{"rendered":"Oracle RAC 12.2 no VMware Workstation – Apresenta\u00e7\u00e3o da S\u00e9rie"},"content":{"rendered":"\n

O Oracle Real Application Clusters (RAC) \u00e9 uma das tecnologias mais importantes do ecossistema Oracle. Permite que m\u00faltiplos servidores acessem simultaneamente um \u00fanico banco de dados, entregando alta disponibilidade, escalabilidade horizontal e balanceamento de carga.<\/p>\n\n\n\n

Nesta s\u00e9rie vamos montar um ambiente completo de Oracle RAC 12.2 com 2 n\u00f3s usando VMware Workstation no Linux, com storage compartilhado via iSCSI fornecido pelo Openfiler. \u00c9 um ambiente de laborat\u00f3rio \u2014 mas constru\u00eddo com as mesmas decis\u00f5es t\u00e9cnicas de um ambiente de produ\u00e7\u00e3o real.<\/p>\n\n\n\n

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\ud83d\udccc Uma nota antes de come\u00e7ar<\/strong> Sei que estamos em 2026 e o Oracle RAC 12c j\u00e1 est\u00e1 fora de suporte. O objetivo desta s\u00e9rie n\u00e3o \u00e9 recomendar essa vers\u00e3o para produ\u00e7\u00e3o \u2014 \u00e9 compartilhar o que faz parte do meu dia a dia como DBA: aprender, revisar conceitos e documentar o processo. Se no caminho isso ajudar outra pessoa, melhor ainda.<\/p>\n<\/blockquote>\n\n\n\n

\ud83d\udccb Esta s\u00e9rie \u2014 Oracle RAC 12.2 no VMware Workstation:<\/strong><\/p>\n\n\n\n

Posts da s\u00e9rie<\/th><\/tr><\/thead>
Apresenta\u00e7\u00e3o da S\u00e9rie \u2014 Arquitetura RAC, ambiente e softwares<\/strong><\/a> \u2190 este post<\/td><\/tr>
Post 1 \u2014 Configura\u00e7\u00e3o do VMware e Openfiler iSCSI<\/strong><\/a><\/td><\/tr>
Post 2 \u2014 Configura\u00e7\u00e3o do Oracle Linux e iSCSI Initiator<\/strong><\/a><\/td><\/tr>
Post 3 \u2014 Instala\u00e7\u00e3o do Grid Infrastructure 12.2<\/strong><\/a><\/td><\/tr>
Post 4 \u2014 Instala\u00e7\u00e3o do Oracle Database e DBCA<\/strong><\/a><\/td><\/tr>
Post 5 \u2014 P\u00f3s-Instala\u00e7\u00e3o e Valida\u00e7\u00e3o Final<\/strong><\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n

O que \u00e9 o Oracle RAC?<\/h2>\n\n\n\n

O RAC funciona com m\u00faltiplos servidores (n\u00f3s) acessando os mesmos datafiles armazenados em storage compartilhado. O que torna isso poss\u00edvel \u00e9 o Oracle Clusterware<\/strong> – o software que coordena os n\u00f3s, gerencia recursos e garante a consist\u00eancia dos dados.<\/p>\n\n\n\n

Componentes principais<\/h3>\n\n\n\n

Oracle Clusterware (Grid Infrastructure):<\/strong> gerencia recursos do cluster, VIPs, OCR e Voting Disks. \u00c9 instalado antes do banco de dados e \u00e9 o cora\u00e7\u00e3o do RAC.<\/p>\n\n\n\n

Oracle ASM (Automatic Storage Management):<\/strong> sistema de arquivos e volume manager dedicado para Oracle. Gerencia os discos compartilhados de forma transparente entre os n\u00f3s.<\/p>\n\n\n\n

Cache Fusion:<\/strong> mecanismo que permite que os n\u00f3s compartilhem blocos de dados em mem\u00f3ria via interconnect, sem precisar ir ao disco. \u00c9 o que diferencia o RAC de um cluster simples.<\/p>\n\n\n\n

SCAN (Single Client Access Name):<\/strong> ponto de entrada \u00fanico para os clientes. Tr\u00eas IPs em round-robin garantem balanceamento de carga e transpar\u00eancia de failover – a aplica\u00e7\u00e3o n\u00e3o precisa saber em qual n\u00f3 a inst\u00e2ncia est\u00e1 rodando.<\/p>\n\n\n\n

OCR (Oracle Cluster Registry):<\/strong> reposit\u00f3rio que armazena as configura\u00e7\u00f5es do cluster – recursos, n\u00f3s, VIPs, servi\u00e7os.<\/p>\n\n\n\n

Voting Disks:<\/strong> discos usados pelo Clusterware para determinar quais n\u00f3s est\u00e3o ativos. Em caso de falha de comunica\u00e7\u00e3o entre n\u00f3s (split-brain), o voting disk determina qual n\u00f3 sobrevive e qual \u00e9 desligado (evicted).<\/p>\n\n\n\n

Topologia de rede<\/h3>\n\n\n\n

O RAC exige tr\u00eas redes distintas com prop\u00f3sitos bem definidos:<\/p>\n\n\n\n

Rede<\/th>Uso<\/th>Interface<\/th><\/tr><\/thead>
P\u00fablica<\/td>Acesso de clientes, VIPs, SCAN<\/td>eth0<\/td><\/tr>
Interconnect<\/td>Cache Fusion entre os n\u00f3s<\/td>eth1<\/td><\/tr>
iSCSI<\/td>Tr\u00e1fego de storage<\/td>eth2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

A separa\u00e7\u00e3o das redes \u00e9 cr\u00edtica \u2014 misturar tr\u00e1fego de cliente com tr\u00e1fego de interconnect ou storage degrada severamente a performance.<\/p>\n\n\n\n

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\ud83d\udca1 Na pr\u00e1tica:<\/strong> Montar um RAC no VMware Workstation tem um custo inicial de configura\u00e7\u00e3o maior do que solu\u00e7\u00f5es prontas como o Oracle VirtualBox Developer Days. A diferen\u00e7a \u00e9 que aqui voc\u00ea toma cada decis\u00e3o t\u00e9cnica de forma expl\u00edcita \u2014 o que torna o laborat\u00f3rio muito mais pr\u00f3ximo do que voc\u00ea encontra em produ\u00e7\u00e3o.<\/p>\n<\/blockquote>\n\n\n\n

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Ambiente de Refer\u00eancia<\/h2>\n\n\n\n
Item<\/th>Valor<\/th><\/tr><\/thead>
Hypervisor<\/td>VMware Workstation 16+<\/td><\/tr>
Host<\/td>Linux<\/td><\/tr>
Guest OS<\/td>Oracle Linux 7.6<\/td><\/tr>
Oracle Grid Infrastructure<\/td>12.2.0.1<\/td><\/tr>
Oracle Database<\/td>12c Release 2 (12.2.0.1)<\/td><\/tr>
Storage<\/td>Openfiler 2.99 \u2014 iSCSI<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Mapeamento de IPs<\/h3>\n\n\n\n
Host<\/th>Interface<\/th>IP<\/th>Uso<\/th><\/tr><\/thead>
orclrac1<\/td>eth0<\/td>192.168.15.170<\/td>Rede p\u00fablica<\/td><\/tr>
orclrac1<\/td>eth1<\/td>10.10.10.1<\/td>Interconnect<\/td><\/tr>
orclrac1<\/td>eth2<\/td>192.168.20.1<\/td>iSCSI<\/td><\/tr>
orclrac1-vip<\/td>\u2014<\/td>192.168.15.180<\/td>VIP<\/td><\/tr>
orclrac2<\/td>eth0<\/td>192.168.15.171<\/td>Rede p\u00fablica<\/td><\/tr>
orclrac2<\/td>eth1<\/td>10.10.10.2<\/td>Interconnect<\/td><\/tr>
orclrac2<\/td>eth2<\/td>192.168.20.2<\/td>iSCSI<\/td><\/tr>
orclrac2-vip<\/td>\u2014<\/td>192.168.15.181<\/td>VIP<\/td><\/tr>
orclrac-scan<\/td>\u2014<\/td>192.168.15.190\/191\/192<\/td>SCAN<\/td><\/tr>
openfiler<\/td>eth0<\/td>192.168.20.10<\/td>iSCSI Target<\/td><\/tr>
openfiler<\/td>eth1<\/td>192.168.15.175<\/td>Ger\u00eancia web\/SSH<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Layout de Discos<\/h3>\n\n\n\n
LUN<\/th>Dispositivo<\/th>Tamanho<\/th>Disk Group Oracle<\/th><\/tr><\/thead>
lun-0<\/td>\/dev\/sdc<\/td>10 GB<\/td>+OCR (voting)<\/td><\/tr>
lun-1<\/td>\/dev\/sdd<\/td>10 GB<\/td>+OCR (voting)<\/td><\/tr>
lun-2<\/td>\/dev\/sde<\/td>10 GB<\/td>+OCR (voting)<\/td><\/tr>
lun-3<\/td>\/dev\/sdf<\/td>35 GB<\/td>+MGMT (GIMR)<\/td><\/tr>
lun-4<\/td>\/dev\/sdg<\/td>60 GB<\/td>+DATA<\/td><\/tr>
lun-5<\/td>\/dev\/sdh<\/td>40 GB<\/td>+FRA<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n

Softwares Necess\u00e1rios<\/h2>\n\n\n\n

Fa\u00e7a o download de todos os softwares antes de come\u00e7ar:<\/p>\n\n\n\n

Software<\/th>Vers\u00e3o<\/th>Onde baixar<\/th><\/tr><\/thead>
VMware Workstation<\/td>16+<\/td>vmware.com<\/td><\/tr>
Openfiler<\/td>2.99<\/td>openfiler.com<\/td><\/tr>
Oracle Linux<\/td>7.6<\/td>edelivery.oracle.com<\/td><\/tr>
Oracle Grid Infrastructure<\/td>12.2.0.1<\/td>edelivery.oracle.com<\/td><\/tr>
Oracle Database<\/td>12c R2 (12.2.0.1)<\/td>edelivery.oracle.com<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Os bin\u00e1rios do Oracle requerem conta gratuita no Oracle eDelivery. Pesquise por Oracle Grid Infrastructure 12.2<\/strong> e Oracle Database 12c Release 2<\/strong> selecionando a plataforma Linux x86-64.<\/p>\n\n\n\n

\n","protected":false},"excerpt":{"rendered":"

O Oracle Real Application Clusters (RAC) \u00e9 uma das tecnologias mais importantes do ecossistema Oracle. Permite que m\u00faltiplos servidores acessem simultaneamente um \u00fanico banco de dados, entregando alta disponibilidade, escalabilidade horizontal e balanceamento de carga. Nesta s\u00e9rie vamos montar um ambiente completo de Oracle RAC 12.2 com 2 n\u00f3s usando VMware Workstation no Linux, com<\/p>\n","protected":false},"author":1,"featured_media":8574,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Oracle RAC 12.2 VMware","_yoast_wpseo_title":"Oracle RAC 12.2 no VMware \u2014 Apresenta\u00e7\u00e3o %%sep%% %%sitename%%","_yoast_wpseo_metadesc":"S\u00e9rie completa de instala\u00e7\u00e3o do Oracle RAC 12.2 no VMware Workstation com Openfiler iSCSI. 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