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Download Oracle Database Administration I Exam Dumps
NEW QUESTION 26
Which three statements are true about sequences in a single instance Oracle database?
- A. Two or more tables cannot have keys generated from the same sequence.
- B. A sequence’s unallocated cached values are lost if the instance shuts down.
- C. A sequence number that was allocated can be rolled back if a transaction fails.
- D. Sequences can always have gaps.
- E. A sequence can Issue duplicate values.
- F. A sequence can only be dropped by a DBA.
Answer: A,B,E
NEW QUESTION 27
Which two statements are true about the PMON background process? (Choose two.)
- A. It frees unused temporary segments
- B. It registers database services with all local and remote listeners known to the database instance
- C. It frees resources held by abnormally terminated processes
- D. It kills sessions that exceed idle time
- E. It records checkpoint information in the control file
Answer: B,C
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm
NEW QUESTION 28
Your database instance is started with a PFILE.
Examine these parameters:
You want to increase the size of the buffer cache.
Free memory is available to increase the size of the buffer cache.
You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;
What is the outcome?
- A. The value is changed for the current instance and in the PFILE
- B. The value is changed only in the PFILE and takes effect at the next instance startup
- C. Change is applied to the current instance, but does not persist after instance restart
- D. It fails because the SCOPE clause is missing
Answer: C
Explanation:
https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902
NEW QUESTION 29
Evaluate these commands which execute successfully:
Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence? (Choose two.)
- A. If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS
- B. Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO
- C. Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times
- D. Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ
- E. Sequence ORD_SEQ is guaranteed not to generate duplicate numbers
Answer: D,E
NEW QUESTION 30
Which two functions are performed by a listener?
- A. creating a user session in the System Global Area (SGA)
- B. maintaining the connection to a client’s user process until the user request is completed
- C. returning the results of processing from the server process to the user process
- D. verifying the service name in an incoming user request
- E. connecting a user process to a server process
- F. verifying a user’s authentication credentials
Answer: C,E
NEW QUESTION 31
……
