AThe Oracle server creates a new histogram based on existing histogram definitions for all table, column, and index statistics for the OE schema.
BThe Oracle server creates a histogram based on data distribution regardless of how the application uses the column/s for all table, column, and index statistics for the OE schema.
CThe Oracle server creates a histogram based on data and application usage of the column/s for all table, column, and index statistics for the OE schema.
DThe Oracle server creates a histogram based on application usage, regardless of data distribution, for all table, column, and index statistics for the OE schema.
Consider this RMAN command: RMAN> CONFIGURE RETENTION POLICY CLEAR; What is the effect of this command?()
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Consider this syntax: MERGE INTO t1 USING t2 ON (join predicate)….. What does the MERGE syntax do?()
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Your database instance is running with full workload after database creation. You have decided to useafixed-sizeundo tablespace. You want to use the Undo Advisor to estimate the capacity of the undotablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace()
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Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace()
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Consider the following scenario: You have a directory, data, under the disk group tdgroupA. You want to create an alias for one of the data files and you execute the following command: ALTER DISKGROUP tdgroupA ADD ALIAS ’+tdgroupA/data/datafile.dbf’ FOR ’+tdgroupA.231.45678’; Which task would be accomplished by the command?()
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You work as a database administrator for Certkiller .com. You find that the database performance degrades while you backup the Certkiller database using Recovery Manager (RMAN). The Certkiller database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation?()
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Consider the following code snippet: BEGIN DBMS_SCHEDULER.SET_ATTRIBUTE ( name => ,,lne_job1, attribute => ,,job_priority, value => 1); END; / If this code were executed, which of the following statements would be true?()
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You find that the database performance degrades while you backup the PROD database using Recovery Manager (RMAN). The PROD database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation?()
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Consider the following: Which statement best describes the meaning of the value for the key_len column?()
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