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Code d'Examen: 1z1-497
Nom d'Examen: Oracle (Oracle Database 12c Essentials)
Questions et réponses: 150 Q&As
Code d'Examen: 1z0-034
Nom d'Examen: Oracle (Upgrade Oracle9i/10g OCA to Oracle Database 11g OCP)
Questions et réponses: 148 Q&As
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NO.1 You have set the value of the NLS_TIMESTAMP_TZ_FORMAT parameter to YYYY-MMDD. The
default format of which two data types would be affected by this setting?
A. DATE
B. TIMESTAMP
C. INTERVAL YEAR TO MONTH
D. INTERVAL DAY TO SECOND
E. TIMESTAMP WITH LOCAL TIME ZONE
Answer: B,E
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NO.2 Which three tasks can be performed using a duplicate database? (Choose three.)
A. Testing the backup and recovery procedures
B. Testing the upgrade of an Oracle database to a new release
C. Testing the effect of an application changes on database performance
D. Continuously updating archive log files from the target database to support failover
Answer: A,B,C
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NO.3 You issued the following commands to configure settings in RMAN:
RMAN> CONFIGURE DEVICE TYPE sbt PARALLELISM 1;
RMAN> CONFIGURE DEFAULT DEVICE TYPE TO Sbt;
RMAN> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE sbt TO 2;
RMAN> CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE sbt TO 2;
RMAN> CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2;
Then you issued the following command to take the backup:
RMAN> BACKUP DATABASE PLUS ARCHIVELOG;
Which statement is true about the execution of the above command?
A. The backup will terminate because the FORMAT clause was not configured for the channel
B. It backs up two copies of data files to tape and disk, and two copies of archived log file on tape
C. It backs up the data files and archived log files to disk, making two copies of each data file and
archived logfile
D. It backs up the data files and archived log files to tape, making two copies of each data file and
archived logfile
Answer: D
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NO.4 Which two statements about Oracle Direct Network File System (NFS) are true? (Choose two.)
A. It bypasses the OS file system cache.
B. A separate NFS interface is required for use across Linux, UNIX, and Windows platforms.
C. It uses the operating system kernel NFS layer for user tasks and network communication modules.
D. File systems need not be mounted by the kernel NFS system when being served through Direct
NFS.
E. Oracle Disk Manager can manage NFS on its own, without using the operating system kernel NFS
driver.
Answer: A,E
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Explanation:
Direct NFS provides faster performance that what can be provided by the operating system's NFS
driver as Oracle bypasses the operating system and generates exactly the requests it needs (no user
configuration or tuning required). Data is cached just once in user space, which saves memory (no
second copy in kernel space). Performance is further improved by load balancing across multiple
network interfaces (if available).
NO.5 You want to track and store all transactional changes to a table over its lifetime.
To accomplish this task, you enabled Flashback Data Archive with the retention of 5 years.
After some time, the business requirement changed and you were asked to change the
retention from 5 years to 3 years.
To accomplish this, you issued the following command:
ALTER FLASHBACK ARCHIVE fla1 MODIFY RETENTION 3 YEAR;
What is the implication of this command?
A. The command produces an error because the retention time cannot be reduced.
B. All historical data is retained but the subsequent flashback data archives are maintained for only
three years.
C. All historical data is purged and the new flashback data archives are maintained for three years.
D. All historical data older than three years is purged from the flashback archive FLA1.
Answer: D
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NO.6 Examine these Data Pump commands to import objects to non-existent users hr1 and oe1.
S expdp system/manager Schemas =hr,oe directory =EXP_ DIR include = table
$ impdp system/manager Schemas = hr1,oe1 Directory = EXP_DIR Dumpfile = export.dat
Remap_schema =hr:hr1,oe :oe1
What would be achieved by running the above commands?
A. expdp will fail because no path has been defined for the dumpfile.
B. expdp will succeed but Impdp will fail because users do not exist.
C. impdp will create two users called hrl and oe1 and import all objects to the new schemas
D. impdp will create two users called hrl and oe1 and import tables owned by hr and oe schemas to
hr1 and oe1 schemas, respectively.
Answer: B
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NO.7 Which statements are true regarding system-partitioned tables? (Choose all that apply.)
A. Only a single partitioning key column can be specified.
B. All DML statements must use partition-extended syntax.
C. The same physical attributes must be specified for each partition.
D. Unique local indexes cannot be created on a system-partitioned table.
E. Traditional partition pruning and partitionwise joins are not supported on these tables.
Answer: D,E
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NO.8 Which data dictionary view would you query to find the name of the default permanent
tablespace of the database?
A. DICTIONARY
B. DBA_TABLESPACES
C. DBA_DIRECTORIES
D. DBA_STORED_SETTINGS
E. DATABASE_PROPERTIES
F. DBA_TABLESPACE_GROUPS
Answer: E
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