
Planos de estabilização - Pré workshop
Authored by Jose Juliano
Instructional Technology
1st - 5th Grade
Used 2+ times

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5 questions
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1.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Qual a função do Otimizador (Cost Based Optimizer)?
Garantir que haja memória suficiente para a query ser executada
Decidir o melhor método de acesso aos dados da query
Fazer tuning da query e recomendar melhorias
2.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
O que acontece durante a primeira execução de um comando SQL?
Soft Parse
Hard Parse
Adaptive Parse
Cursor Parse
3.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Qual seria uma das vantagens de se utilizar bind variable no Oracle?
Tamanho da query SQL fica menor com o uso de bind
Compartilha privilegio de outros usuarios para execução da query
Permite o compartilhamento da mesma query em diferentes sessões
Permite acesso a dados de outros usuarios
4.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Qual a importancia da coleta de estatistica no banco Oracle?
Permite que o CBO tome decisões mais acertadas para otimização
Permite a redução do tamanho dos objetos
Calcula o tamanho e custo do plano de execução
Verifica se o objeto é valido e pode ser usado pelo CBO
5.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Quais desses parametros não influenciam o otimizador?
optimizer_mode
optimizer_adaptive_plans
db_file_multiblock_read_count
db_block_size
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