Exam Code: 1Z0-053 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: Oracle Database 11g: Administration II
Certification Provider: Oracle
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2021 Jun 1Z0-053 Study Guide Questions:
Q451. You are managing an Oracle Database 11g ASM instance having three disks in a disk group with ASM compatibility attribute set to 11.1.0 and redundancy set to high. One of the disks in the disk group becomes unavailable because of power failure. Which statements will be true in this scenario? (Choose all that apply.)
A. The disk is immediately dropped from the disk group.
B. The ASM tracks the extents that are modified during the outa
C. The ASM migrates the extents from the unavailable disk to the remaining disks.
D. The disk automatically goes offline.
Q452. Evaluate the following SQL statement used to create the PRODUCTS table:
CREATE TABLE products
(product_id NUMBER(3) PRIMARY KEY,
total_value AS ( qty * rate))
PARTITION BY RANGE (total_value)
(PARTITION p1 VALUES LESS THAN (100000),
PARTITION p2 VALUES LESS THAN (150000),
PARTITION p3 VALUES LESS THAN (MAXVALUE))
COMPRESS FOR ALL OPERATIONS;
Which statement is true regarding this command?
A. It executes successfully but partition pruning cannot happen for this partition key.
B. It produces an error because the TOTAL_VALUE column cannot be used as a partition key.
C. It produces an error because compression cannot be used for the TOTAL_VALUE partition key.
D. It executes successfully but the values in the TOTAL_VALUE column would not be physically stored in the partitions.
Q453. View the Exhibit and examine the resource consumption details for the current plan in use by the database instance.
Which two statements are true based on the output? (Choose two.)
A. An attempt to start a new session by the user belonging to DSS_QUERIES fails with an error
B. A user belonging to DSS_QUERIES can log in to a new session but the session will be queued
C. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited for the CPU due to resource management
D. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited for the CPU due to resource management, I/O waits, and latch or enqueue contention
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Q454. Which of these appropriately describes the results of a manual SQL Tuning Advisor task?
A. A list of SQL statements and recommendations for tuning
B. A list of SQL statements that have been tuned by the Advisor, with before and after metrics
C. Graphs showing the actual performance improvement made by the Advisor after it implemented the recommended changes
D. All of the above
Q455. User SCOTT wants to back out the transactions on the REGIONS table in his schema. As a DBA, which commands must you execute to enable SCOTT to flash back the transactions? (Choose four.)
A. ALTER DATABASE FLASHBACK ON;
B. GRANT SELECT any transaction TO scott;
C. GRANT EXECUTE ON dbms_flashback TO scott;
D. ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
E. ALTER TABLESPACE undots1 RETENTION GUARANTEE;
F. ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (PRIMARY KEY) COLUMNS;
Q456. If a backup set is expired, what can you do to correct the problem?
A. Change the retention criteria.
B. Make the lost backup set pieces available to RMAN again.
C. Run the crosscheck command to correct the location for the backup set piece contained in the metadata.
D. Nothing. The backup set piece is lost forever.
E. Call Oracle support, their assistance is required.
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Q457. You have applications that have frequently executed queries, and produce small and static result sets.
You configure the sqlnet.ora file in the client machine to set a nonzero value for the OCI_RESULT_CACHE_MAX_SIZE parameter.
What is the purpose of this configuration?
A. to avoid round trips to the server by enabling caching of query results in client memory
B. to improve performance by storing a copy of the data from the private SQL area of the PGA
C. to enhance the query performance by creating a cache in the client memory for sorting operations
D. to avoid the storing of query plans and results in the server by creating a cache in the client memory
Q458. View the Exhibit to examine the parameter values. You are planning to set the value for the MEMORY_TARGET parameter of your database instance. What value would you assign?
A. 1440 MB
B. 90 MB
C. 362 MB
D. 272 MB
Q459. Your database has a backup that was taken yesterday (Tuesday) between 13:00 and 15:00 hours. This is the only backup you have. You have lost all the archived redo logs generated since the previous Monday, but you have archived redo logs available from the previous Sunday and earlier. You now need to restore your backup due to database loss. To which point can you restore your database?
A. 13:00 on Tuesday.
B. 15:00 on Tuesday.
C. Up until the last available archived redo log on Sunday.
D. To any point; all the redo should still be available in the online redo logs.
E. The database is not recoverable.
Q460. Examine the following ALTER command:
SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS;
What is the purpose of the command?
A. It cancels all pending disk drops within the disk group.
B. It restores disks that are being dropped as the result of a DROP DISKGROUP operation
C. It mounts disks in the disk group for which the drop-disk operation has already been co pleted
D. It restores all the dropped disks in the disk group for which the drop-disk operation has already been completed
E. It adds previously dropped disks back into the disk group