1Z0-053 | The Secret of Oracle 1Z0-053 examcollection
Q91. Upon starting your database, you receive the following error:
SQL> startup
ORACLE instance started.
Total System Global Area 171581440 bytes
Fixed Size 1298640 bytes
Variable Size 146804528 bytes
Database Buffers 20971520 bytes
Redo Buffers 2506752 bytes
Database mounted.
ORA-00313: open failed for members of log group 1 of thread 1
ORA-00312: online log 1 thread 1: '/oracle01/oradata/orcl/redo01.log'
ORA-00312: online log 1 thread 1: '/oracle01/oradata/orcl/redo01a.log'
You can choose from the following steps:
a. Restore the database datafiles.
b. Issue the alter database clear unarchived logfile group 1 command.
c. Issue the alter database open command.
d. Issue the alter database open resetlogs command.
e. Recover the database using point-in-time recovery.
f. Issue the Startup Mount command to mount the database.
g. Back up the database.
Which is the correct order of these steps in this case?
A. a, f, e, d, g
B. f, e, d
C. f, b, c, g
D. a, f, c
E. The database cannot be recovered.
Answer: C
Q92. If you find errors in the view V$DATABASE_BLOCK_CORRUPTION with a status of MEDIA_CORRUPT, what RMAN command would you run to correct the problem?
A. recover lost blocks;
B. recover corrupt blocks;
C. recover media corrupt blocks from list;
D. recover corrupt blocks from list;
E. recover corruption list;
Answer: E
Q93. You are working on the APPDB database as a DB A. The database has a default Flashback Data Archive DFLA1 created on it. You issued the following command to drop the Flashback Archive FLA1:
DROP FLASHBACK ARCHIVE fla1;
What is the effect of this command?
A. The Flashback Archive FLA1 is dropped only if it is empty.
B. The tablespace having Flashback Archive is dropped.
C. The Flashback Archive FLA1 is dropped after moving the existing data in it to the default Flashback Archive.
D. The Flashback Data Archive and historical data are dropped.
Answer: D
Q94. You create a new Automatic Database Diagnostic Monitor (ADDM) task:
instance_analysis_mode_task. To view the ADDM report, you use the following command:
SQL> SELECT dbms_addm.get_report('my_instance_analysis_mode_task') FROM dual;
You want to suppress ADDM output relating to Segment Advisor actions on user SCOTT's segments. What would you do to achieve this?
A. Add a finding directive for the ADDM task.
B. Add a segment directive for the ADDM task.
C. Add a parameter directive for the ADDM task.
D. Disable the Segment Advisor from the Automatic Maintenance Task.
Answer: B
Q95. You executed the following commands:
SQL> ALTER SESSION SET OPTIMIZER_USE_PENDING_STATISTICS = false;
SQL> EXECUTE DBMS_STATS.SET_TABLE_PREFS('SH', 'CUSTOMERS', 'PUBLISH','false');
SQL> EXECUTE DBMS_STATS.GATHER_TABLE_STATS('SH', 'CUSTOMERS');
Which statement is correct regarding the above statistics collection on the SH.CUSTOMERS table in the above session?
A. The statistics are stored in the pending statistics table in the data dictionary.
B. The statistics are treated as the current statistics by the optimizer for all sessions.
C. The statistics are treated as the current statistics by the optimizer for the current sessions only.
D. The statistics are temporary and used by the optimizer for all sessions until this session terminates.
Answer: A
Q96. Exhibit:
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. The second user's session immediately produces the resource busy error.
B. The second user's command executes successfully.
C. The second user's session waits for a time period before producing the resource busy error.
D. A deadlock is created.
Answer: C
Q97. You have three production databases, HRDB, FINDB, and ORGDB, that use the same ASM instance. At the end of the day, while all three production database instances are running, you execute the following command on the ASM instance :
SQL> shutdown immediate;
What is the result of executing this command?
A. The ASM instance is shut down, but the other instances are still running.
B. It results in an error because other database instances are connected to it.
C. All the instances, including the ASM instance, are shut down in the IMMEDIATE mode.
D. HRDB, FINDB, and ORGDB instances are shut down in the ABORT mode and the ASM instance is shut down in the IMMEDIATE mode.
Answer: B
Q98. Indentify two advantages of using recovery catalog instead of the control file of the database in Recovery Manager (RMAN). (Choose two.)
A. You can use RMAN stored scripts
B. Recovery is faster if data is stored in catalog in addition to the control file
C. You can store backup information of all registered databases in one place
D. Database backups are automatically deleted when they are older than the specified time period
Answer: AC
Q99. 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. Specify undo retention guarantee for the database.
C. Enable supplemental logging for the database.
D. Query V$UNDOSTAT to determine the amount of undo that will be generated and create an undo tablespace for that size.
E. Create Flashback Data Archive on the tablespace on which the tables are stored.
Answer: A
Q100. Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query?
A. XID
B. VERSIONS_PK
C. VERSIONS_XID
D. VERSIONS_UNIQUE
Answer: C