1z0-050 | Improve Oracle 1z0-050 examcollection
Q51. View the Exhibit exhibit1 to examine the series of SQL commands.
The baseline in the first row of the Exhibit is created when OPTIMIZER_MODE was set to FIRST_ROWS.
Which statement is true if the SQL query in exhibit1 is executed again when the value of OPTIMIZER_MODE is set to FIRST_ROWS?
A. The optimizer uses a new plan because none of the plans in the exhibit2 are fixed plans.
B. The optimizer uses the plan in the second row of the exhibit2 because it is an accepted plan.
C. The optimizer uses the plan in the first row of the exhibit2 because it is the latest generated plan.
D. The optimizer uses the plan in the first row of the exhibit2 because OPTIMIZER_MODE was set to FIRST_ROW during its creation.
Answer: B
Q52. You need to create a partitioned table to store historical data and you issued the following command:
CREATE TABLE purchase_interval
PARTITION BY RANGE (time_id)
INTERVAL (NUMTOYMINTERVAL(1,'month')) STORE IN (tbs1,tbs2,tbs3) (
PARTITION p1 VALUES LESS THAN(TO_DATE('1-1-2005', 'dd-mm-yyyy')), PARTITION p2 VALUES LESS THAN(TO_DATE('1-1-2007', 'dd-mm-yyyy'))) AS
SELECT *
FROM purchases
WHERE time_id < TO_DATE('1-1-2007','dd-mm-yyyy');
What is the outcome of the above command?
A. It returns an error because the range partitions P1 and P2 should be of the same range.
B. It creates two range partitions (P1, P2). Within each range partition, it creates monthwise subpartitions.
C. It creates two range partitions of varying range. For data beyond '1-1-2007,' it creates partitions with a width of one month each.
D. It returns an error because the number of tablespaces (TBS1,TBS2,TBS3)specified does not match the number of range partitions (P1,P2) specified.
Answer: C
Q53. Following is the list of locations in random order where oranfstab can be placed.
1./etc/mtab
2.$ORACLE_HOME/dbs/oranfstab
3./etc/oranfstab
What is the sequence in which Direct NFS will search the locations?
A. 1, 2, 3
B. 3, 2, 1
C. 2, 3, 1
D. 1, 3, 2
Answer: C
Q54. View the Exhibit for some of the current parameter settings.
A user logs in to the HR schema and issues the following commands:
SQL> CREATE TABLE emp
(empno NUMBER(3),
ename VARCHAR2(20),
sal NUMBER(8,2));
SQL> INSERT INTO emp(empno,ename) VALUES(1,'JAMES'); At this moment, a second user also logs in to the HR schema and issues the following command:
SQL> ALTER TABLE emp MODIFY sal NUMBER(10,2);
What happens in the above scenario?
A. A deadlock is created.
B. The second user's command executes successfully.
C. The second user's session immediately produces the resource busy error.
D. The second user's session waits for a time period before producing the resource busy error.
Answer: D
Q55. Evaluate the following command and its output:
SQL>SELECT * FROM dba_temp_free_space;
TABLESPACE_NAME TABLESPACE_SIZE ALLOCATED_SPACE FREE_SPACE ---------------------------- -------------------------- ---------------------------- ------------------ LMTEMP 250609664 101048576 149561088
Which two statements correctly interpret the output? (Choose two.)
A. FREE_SPACE indicates only the space that is currently unallocated.
B. ALLOCATED_SPACE indicates only the space currently allocated and in use.
C. FREE_SPACE indicates only the space that is currently allocated and available for reuse.
D. ALLOCATED_SPACE indicates both the space currently allocated and used, and the space that is available for reuse.
E. FREE_SPACE indicates both the space that is currently allocated and available for reuse, and the space that is currently unallocated.
Answer: DE
Q56. What are the recommendations for Oracle Database 11g installation to make it Optimal Flexible Architecture (OFA)-compliant? (Choose all that apply.)
A. ORACLE_BASE should be set explicitly.
B. An Oracle base should have only one Oracle home created in it.
C. Flash recovery area and data file location should be on separate disks.
D. Flash recovery area and data file location should be created under Oracle base in a non- Automatic Storage Management (ASM) setup.
Answer: ACD
Q57. You are working as a DBA on the decision support system. There is a business requirement to track and store all transactions for at least three years for a few tables in the database. Automatic undo management is enabled in the database.
Which configuration should you use to accomplish this task?
A. Enable Flashback Data Archive for the tables.
B. Enable supplemental logging for the database.
C. Specify undo retention guarantee for the database.
D. Create Flashback Data Archive on the tablespace on which the tables are stored.
E. Query V$UNDOSTAT to determine the amount of undo that will be generated and create an undo tablespace for that size.
Answer: A
Q58. Which two activities are NOT supported by the Data Recovery Advisor? (Choose two.)
A. Diagnose and repair a data file corruption offline.
B. Diagnose and repair a data file corruption online.
C. Diagnose and repair failures on a standby database.
D. Recover from failures in the Real Application Cluster (RAC) environment.
Answer: CD
Q59. You executed the following PL/SQL block successfully:
VARIABLE tname VARCHAR2(20)
BEGIN
dbms_addm.insert_finding_directive (NULL, DIR_NAME=>'Detail CPU Usage', FINDING_NAME=>'CPU Usage',
MIN_ACTIVE_SESSIONS=>0, MIN_PERC_IMPACT=>90);
:tname := 'database ADDM task4'
dbms_addm.analyze_db(:tname, 150, 162);
END;
/
Then you executed the following command:
SQL> SELECT dbms_addm.get_report(:tname) FROM DUAL;
The above command produces Automatic Database Diagnostic Monitor (ADDM) analysis ____.
A. with the CPU Usage finding if it is less than 90
B. without the CPU Usage finding if it is less than 90
C. with the CPU Usage finding for snapshots below 90
D. with the CPU Usage finding for snapshots not between 150 and 162
Answer: B
Q60. You are working on a CATDB database that contains an Oracle Database version 11.1 catalog schema owned by the user RCO11. The INST1 database contains an Oracle Database version 10.1 catalog schema owned by the user RCAT10.
You want the RMAN to import metadata for database IDs 1423241 and 1423242, registered in RCAT10, into the recovery catalog owned by RCO11.
You executed the following RMAN commands:
RMAN> CONNECT CATALOG rco11/password@catdb
RMAN> IMPORT CATALOG rcat10/oracle@inst1;
What happens when you execute the above commands? (Choose all that apply.)
A. They deregister all databases registered in the RCAT10 catalog.
B. They import metadata for all registered databases in the RCAT10 database.
C. They register all the RCAT10-catalog registered databases in the RCO11 catalog.
D. They overwrite all stored scripts in the RCO11 catalog with the same name as that in the RCAT10 catalog.
Answer: ABC