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1z0-485 – Oracle Exadata Database Machine 2014 Implementation Essentials

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Showing 7–9 of 10 questions

Question 7

If your customer wants to save storage space by compressing tables that are read frequently but rarely updated, which compression technique would you recommend?

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    OLTP
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    ARCHIVE HIGH
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    QUERY HIGH
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    ARCHIVE LOW
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    BASIC
Question 8

Which is a best practice for High Availability (HA) in an Exadata environment?

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    Checksums performed on the Exadata Storage Server ensure logical consistency of block content.
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    When a standby database is in place, DB_BLOCK_CHECKING is not required and thus not recommended.
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    Oracle Exadata Storage Server Software HARD checks operate transparently after enabling DB_BLOCK_CHECKSUM on a database.
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    Due to the different architecture that Exadata has with storage servers, compared to regular Storage Area Network, DB_LOST_WRITE_PROTECT need not be set.
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    Stretched RAC is the best alternative for Exadata that combines both HA and DR into one.
Question 9

Which statement is true about instance caging setup?

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    Instance caging is the right approach to make sure that database instances are not stealing memory from each other.
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    The CPU Resource Manager and IORM need to be enabled to make instance caging to work as expected.
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    Database instances need to be restarted to make changes to cpu_count effective.
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    For a system with 16 threads, the sum of cpu_count for all databases should not be higher than 32 to prevent oversubscribing
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    The init.org parameter resource_manager_plan should be set.