多项选择题

Which three functions are performed by the SQL Tuning Advisor？（）

A. Building the SQL profile
B. Recommending optimization of materialized views
C. Checking query objects for missing and stale statistics
D. Recommending bitmap， function-based， and B-tree indexes
E. Recommending restructuring SQL queries that are using bad plans

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热门试题

单项选择题YouwanttoenableautomaticPGAmemorymanagementinyourdatabase.Whichsettingisrequiredtoachievethis？（）

A. Set MEMORY_TARGET to zero
B. Set the STATISTICS_LEVEL parameter to BASIC
C. Set the WORKAREA_SIZE_POLICY parameter to MANUAL
D. Set the PGA_AGGREGATE_TARGET parameter to nonzero value

多项选择题Whichthreestatementsaretrueaboutpersistentconfiguration？（）

A. A user cannot set privileges on the persistent lightweight jobs
B. Persistent lightweight jobs generate a large amount of metadata
C. It is possible to create fully self-contained persistent lightweight jobs
D. The use of a template is mandatory to create persistent lightweight jobs
E. Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time

多项选择题Whichthreestatementsaretrueaboutwindows？（）

A. Only one window can be open at any given time
B. Consumer groups are associated with windows
C. Windows work with job classes to control resource allocation
D. The database service name must be provided during windows creation
E. Windows can automatically start job or change resource allocation among jobs for various time periods.

多项选择题IdentifythepersistentconfigurationsettingforthetargetdatabasethatcanbesetforthebackupbyusingRMAN.（）

A. Backup retention policy
B. Default backup device type
C. Default destinations for backups
D. Multiple backup device types for single backup
E. Default section size for backups

多项选择题While Monitoring the space usage in your database that is in ARCHIVELOG mode you observed that the flash recovery area does not have enough free space to accommodate any more files and you do not have necessary permissions to add more space to it. Identify the two events that can occur in the event of a log switch？（）

A. An entry is created in the alert log file and the database instance continues to function normally
B. The log switch hangs occur for transactions until free space is available in the flash recovery area
C. The Oracle database server deletes a file that is on the obsolete file list to make free space in the flash recovery area
D. The database instance status is implicitly changed to RESTRICTED mode and file creations to the flash recovery area are prevented