单选题You are managing the Oracle database. Which of the following choices correctly identifies when Oracle reads the contents of the init.ora file?（）A When the instance is started B When the database is mounted C When the database is opened D When the datab

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单选题

You are managing the Oracle database. Which of the following choices correctly identifies when Oracle reads the contents of the init.ora file?（）

When the instance is started

When the database is mounted

When the database is opened

When the database is closed

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单选题When determining the number of UNDO segments in a database, which of the following choices identifies a factor to consider? （）A Size of typical transactions B Concurrent transactions C Size of rows in table most frequently changed D Number of anticipated disk sorts

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第7题

单选题You enable block change tracking. You issue the following command： BACKUP INCREMENTAL LEVEL 0 DATABASE； The next day，you issue the following command： BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE； Which statement about the use of the change tracking file is true？（）ARMAN reads the block change tracking file only when it performs the incremental level 0 backup.BRMAN reads the block change tracking file when it performs both incremental backups.CRMAN reads the block change tracking file only when it performs the incremental level 1 backup.DRMAN does not read the block change tracking file when it performs either incremental backup.

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单选题You are managing the Oracle database. Which of the following choices correctly identifies when Oracle reads the contents of the init.ora file?（）A When the instance is started B When the database is mounted C When the database is opened D When the datab

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