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5974542
Como o ORACLE trabalha
Description
Mind Map on Como o ORACLE trabalha, created by Carolay Portilla on 04/08/2016.
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analista de negócios
Mind Map by
Carolay Portilla
, updated more than 1 year ago
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Created by
Carolay Portilla
almost 8 years ago
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Resource summary
Como o ORACLE trabalha
1- execucao de instancia em PC = servidor de BD
2-PC executa aplicacao
executa aplicacao de usuario
aplicacao cliente tenta se conectar com servidor
atraves driver apropriado SQL*NET
3-servidor executa driver SQL*NET
detecta requisicao conexao app cliente
cria processo servidor dedicado ao usuario
4-usuario executa comando SQL
transacao efetivada
comando COMMIT
5-processo servidor recebe o comando
verifica se areas shared SQL esta armazenada area shared pool
comando= comando emitido pelo usuario
6-processo servidor
recupera qualquer valor armazenado nos arquivos de dados
no database buffer cache
7-processo servidor modifica dados na SGA
processo DBWR escreve dados modificados em disco
comando COMMIT
processo LGWR
escreve registros de transcacoes no arquivo redo log
transacao ok
processo servidor manda msg para app
transcao nao bemsucedida
msg de erro emitida
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