1Z0-053章節(jié)練習(xí)(2019.03.21)

來(lái)源：考試資料網(wǎng)

1 What is the advantage of setting the ASM-preferred mirror read for the Stretch cluster configuration？（）

2 Which statement most accurately describes the implementation of a SQL Access Advisor recommendation?（）

3 Which are the correct steps， in order， to deal with the loss of an online redo log if the database has not yet crashed？（）
a. Issue a checkpoint.
b. Shut down the database.
c. Issue an alter database open command to open the database.
d. Startup mount the database.
e. Issue an alter database clear logfile command.
f. Recover all database datafiles.

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4 Which two statements are true with respect to the maintenance window？（） .

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5 You want to use the automatic management of backup and recovery operations features for your database. Which configuration must you set？（）

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6 Which of the following is a potential performance tuning recommendation from the SQL Access Advisor?（）

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7 Which option is best practice for creating a recovery catalog owner in the catalog database？（）

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8 The database is currently open and the temp03.dbf tempfile belonging to the default temporarytablespace TEMP has been corrupted.
What steps should you take to recover from this tempfile loss in an efficient manner？（）

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9 What is the default AU size of an ASM disk group? What is the maximum AU size in an ASM disk group?（）

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10 You want to track and store all transactional changes to a table over its lifetime. To accomplish this task， you enabled Flashback Data Archive with the retention of 5 years. After some time， the business requirement changed and you were asked to change the retention from 5 years to 3 years. To accomplish this， you issued the following command：
ALTER FLASHBACK ARCHIVE fla1 MODIFY RETENTION 3 YEAR；
What is the implication of this command？（）

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