星期五『201-231』



Q.201
Your database is running in archivelog mode. 
Examine the initialization parameters you plan to set for your database instance.
LOG_ARCHIVE_DEST_1 = 'LOCATION=/disk1/arch'
LOG_ARCHIVE_DEST_2 = 'L0CATION=/disk2/3rch'
LOG_ARCHIVE_DEST_3 = 'LOCATION=/disk3/arch'
LOG_ARCHIVE_DEST_4 = 'LOCATION=/disk4/3rch MANDATORY'
Identify the statement that correctly describes these settings.
A. These settings work only if log_archive_min_succeed_dest is set to a value of 4.
B. An online redo log file is not allowed to be overwritten if the archived log file 
   cannot be created in any of the log_archive_dest_.n destinations.
C. Optional destinations cannot use the fast recovery area.
D. An online redo log file is not allowed to be overwritten if the archived log file 
   cannot be created in the location specified for log_archive_dest_4.
Correct Answer: B


Q.202
Your database supports an online transaction processing (OLTP) workload in which 
one of the applications creates a temporary table for a session and performs transactions on it. 
This consumes a lot of undo tablespace and is affecting undo retention.
Which two actions would you take to solve this problem?
A. Enable temporary undo for the database.
B. Enable undo retention guarantee.
C. Increase the size of the redo log buffer.
D. Enable Automatic Memory Management (AMM).
E. Increase the size of the temporary tablespace.
Correct Answer: D,E


Q.203
For which three pieces of information can you use the RMAN list command?
A. stored scripts in the recovery catalog
B. available archived redo log files
C. backup sets and image copies that are obsolete
D. backups of tablespaces
E. backups that are marked obsolete according to the current retention policy
Correct Answer: A,B,D


Q.204
You need to perform a block media recovery on the tools01.dbf data file in your database by using Recovery Manager (RMAN).
Which two are prerequisites for performing this operation?
A. You must configure a block change tracking file.
B. You must use an incremental level-1 backup to restore blocks.
C. You must ensure that the database is mounted or open.
D. You must have full or level-0 backups to restore blocks.
E. You must take the tools01.dbfdata file offline.
Correct Answer: C,D


Q.205
Your multitenant container database (CDB) contains multiple pluggable databases (PDBs). 
You execute the command to create a common user:
SQL> CREATE USER c##a_admin
     IDENTIFIED BY password
     DEFAULT TABLESPACE users
     QUOTA 100M ON users
     TEMPORARY TABLESPACE temp;
Which statement is true about the execution of the command?
A. The command succeeds and sets the default permanent tablespace of a PDB as the default tablespace for 
   the c##a_admin user if the users tabiespace does not exist in that PDB.
B. The command gives an error because the container=all clause is missing.
C. The command succeeds only if all the PDBs have the users and temp tablespaces.
D. The common user is created in the CDB and all the PDBs, and uses the users and temp tablespaces of the CDB to store schema objects.
Correct Answer: D


Q.206
A database is running in archivelog mode. The database contains locally managed tablespaces.
Examine the RMAN command:
RMAN> BACKUP AS COMPRESSED BACKUPSET SECTION SIZE 1024M DATABASE;
Which statement is true about the execution of the command?
A. The backup succeeds only if the RMAN default device for backup is set to disk.
B. The backup fails because you cannot specify section size for a compressed backup.
C. The backup succeeds and only the used blocks are backed up with a maximum backup piece size of 1024 MB.
D. The backup succeeds only if all the tablespaces are locally managed.
Correct Answer: C


Q.207
Which three statements are true about the SQL*Loader utility?
A. It can be used to create tables using data that is stored in external files.
B. It can be used to extract and reorganize data from external files, and then load it into a table.
C. It can be used to load data from external files using direct path only.
D. It can be used to load data from multiple external files into multiple tables.
E. It can be used to generate unique sequential values in specified columns while loading data.
Correct Answer: A,D,E


Q.208
You notice that the performance of your production 24/7 Oracle 12c database has significantly degraded.
Sometimes you are not able to connect to the instance because it hangs. You do not want to restart the database instance.
How can you detect the cause of the degraded performance?
A. Enable Memory Access Mode, which reads performance data from SGA.
B. Use emergency monitoring to fetch data directly from SGA for analysis.
C. Run Automatic Database Diagnostic Monitor (ADDM) to fetch information from the latest Automatic Workload Repository (AWR) snapshots.
D. Use Active Session History (ASH) data and hang analysis in regular performance monitoring.
E. Run ADDM in diagnostic mode.
Correct Answer: C


Q.209
Your database is running in archivelog mode and Automatic Undo Management is enabled.
Which two tasks should you perform before enabling Flashback Database?
A. Enable minimal supplemental logging.
B. Ensure that the db_flashback_retention_target parameter is set to a point in time (in minutes) to which the database can be flashed back.
C. Enable the recyclebin.
D. Enable undo retention guarantee.
E. Enable Fast Recovery Area.
Correct Answer: A,C


Q.210
Question 210/231 - 1z0-063.v2018-04-26
In your database, the tbs percent used parameter is set to 60 and the tbs percent free parameter is set to
20.
Which two storage-tiering actions might be automated when using Information Lifecycle Management (ILM) to automate data movement?
A. Setting the target tablespace to read-only after the segments are moved
B. The movement of all segments to a target tablespace with a higher degree of compression, 
   on a different storage tier, when the source tablespace exceeds tbs percent used
C. The movement of some blocks to a target tablespace with a lower degree of compression, 
   on a different storage tier, when the source tablespace exceeds tbs percent used
D. The movement of some segments to a target tablespace with a higher degree of compression, 
   on a different storage tier, when the source tablespace exceeds T3S percent used
E. Taking the target tablespace offline after the segments are moved
Correct Answer: A,D


Q.211
Examine these Data Pump commands to export and import objects from and to the same database.
The dba has not yet created users hr1 and oe1.
$ expdp system/manager schemas = hr.oe directory = EXP_DIR dumpfile = export.dat include = table
$ impdp systen/manager schemas = hr1,oe1 directory = EXP_DIR dumpfile = export.dat remap_schena=hr:hr1, oe:oe1
What will happen when running these commands?
A. expdp will succeed but impdp will fail because the users do not exist.
B. impdp will create two users called hr1 and oe1 and import only the tables 
   owned by hr and oe schemas to ht1 and oe1 schemas, respectively.
C. inpdp will create two users called hr1 and oe1 and import all objects to the new schemas.
D. expdp will fail because no path has been defined for the dumpfile.
Correct Answer: A


Q.212
RMAN is connected to the target database prod1 and an auxiliary instance in nomount state. 
Examine the command to create a duplicate database:
RMAN> DUPLICATE TARGET DATABASE TO dup1
      FROM ACTIVE DATABASE
      NOFILE NAME CHECK
      PASSWORD FILE SPFILE;
Which two statements are true about the execution of the duplicate command?
A. The password file and SPFILE for the duplicate database dup1 are created in their respective default locations.
B. The duplicate database is created without using RMAN backups and prod: is allowed to remain open during duplication.
C. The duplicate database is created by using the backups created during the execution of
D. All archive redo log files are automatically copied to the duplicate database.
E. The duplicate command.
F. The duplicate database has the same directory structure as the source database.
Correct Answer: B,D


Q.213
You want to back up a database such that only formatted blocks are backed up. 
Which statement is true about this backup operation?
A. The database must be backed up as an image copy.
B. The tablespace must be taken offline.
C. All files must be backed up as backup sets.
D. The backup must be performed in mount state.
Correct Answer: D


Q.214
You want to reduce fragmentation and reclaim unused space for the sales table but not its dependent objects. 
During this operation, you want to ensure the following:
i.Long-running queries are not affected.
ii.No extra space is used.
iii.Data manipulation language (DML) operations on the table succeed at all times throughout the process.
iv.Unused space is reclaimed both above and below the high water mark.
Which alter TABLE option would you recommend?
A. ROW STORE COMPRESS BASIC
B. DEALLOCATE UNUSED
C. SHRINK SPACE COMPACT
D. SHRINK SPACE CASCADE
Correct Answer: C


Q.215
Examine the RMAN command:
RMAN> SET ENCRYPTION IDENTIFIED BY <password> ON FOR ALL TABLESPACES;
RMAN> BACKUP DATABASE PLUS ARCHIVELOG;
Which type of encryption is used for the backup performed by using this command?
A. password-mode encryption
B. dual-mode encryption
C. transparent encryption
D. default encryption
Correct Answer: A


Q.216
In your database, there are tablespaces that were read-only when the last backup was taken. 
These tablespaces have not been made read/write since then. 
You want to perform an incomplete recovery on the database by using a backup control file.
What precaution must you take for the read-only tablespaces before performing an incomplete recovery?
A. All the read-only tablespaces should be renamed to have the MISSING nnnn format.
B. All the read-only tablespaces should be made online with logging disabled.
C. All the read-only tablespaces should be restored separately.
D. All the read-only tablespaces should be taken offline.
Correct Answer: C


Q.217
Your multitenant container database (CDB) cdb1, 
which has no startup triggers and contains multiple pluggable databases (PDBs), 
is started up by using the command:
SQL>STARTUP
Which two statements are true about the successful execution of the command?
A. Only the root database is opened in read-write mode.
B. The root, the seed, and all the PDBs are opened in read-write mode.
C. All redo log files are opened.
D. All the PDBs are in closed state.
E. All the PDBs are opened in read-write mode.
Correct Answer: A,C


Q.218
You have set the value of the NLS_TIMESTAMP_TZ_FORMAT parameter to YYYY-MM-DD. 
The default format of which two data types would be affected by this setting?
A. DATE
B. TIMESTAMP WITH LOCAL TIME ZONE
C. INTERVAL YEAR TO MONTH
D. INTERVAL DAY TO SECOND
E. TIMESTAMP
Correct Answer: B,E


Q.219
You create a new database by using the CREATE DATABASEcommand in SQL*Plus, 
with the ENABLE PLUGGABLE DATABASEclause specified.
Which statement is true about the database that is created?
A. It is created as a container database (CDB) with CDB$ROOT, PDB$SEED, and a pluggable database (PDB).
B. It is created as a non-CDB that becomes a CDB after the first PDB is plugged in.
C. It is created as a PDB that must be plugged into an existing CDB.
D. It is created as a CDB with the CDB$ROOTand PDB$SEEDdatabases.
Correct Answer: D


Q.220
Which three RMAN persistent settings can be set for a database?
A. backup retention policy
B. default backup device type
C. default section size for backups
D. default destinations for backups
E. multiple backup device types for a single backup
Correct Answer: A,B,D


Q.221
In CDB$ROOT of your multitenant container database (CDB), you create a common user, C##A_ADMIN.
and then execute the command:
SQL> GRANT CREATE TABLESPACE TO C##A_ADMIN;
Which statement is true?
A. The command executes successfully, enabling the C##A_ADMIN user to create a tablespace only in the root database.
B. The command executes successfully, enabling the C##A_ADMIN user to create tablespaces in the root database,
   as well as in the pluggable databases (PDBs).
C. The command fails because the CONTAINER clause is not used.
D. The command fails because system privileges cannot be granted to a common user.
Correct Answer: C


Q.222
You are administering a multitenant container database (CDB) that contains multiple pluggable databases (PDBs).
RMAN is connected to CDB$ROOT.
Examine the command:
RMAN> LIST FAILURE;
Which statement is true about this command?
A. It lists failures only for the CDB root database.
B. It lists failures for a PDB only when RMAN is connected to a recovery catalog.
C. It lists failures for the CDB and all the PDBs in this CDB.
D. It lists failures only if RMAN is connected to a PDB.


Q.223
Which Oracle Database component is audited by default if the Unified Auditing option is enabled?
A. Oracle Label Security
B. Oracle Recovery Manager (RMAN)
C. Oracle Real Application Security
D. Oracle Database Vault
E. Oracle Data Pump
Correct Answer: B


Q.224
Which three statements are true about a job chain?
A. It can contain a nested chain of jobs.
B. It can be used to implement dependency-based scheduling.
C. It can not invoke the same program or nested chain in multiple steps in the chain.
D. It can not have more than one dependency.
E. It can be executed using event-based or time-based schedules.
Correct Answer: A,B,E


Q.225
You execute the 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 issue the following command to take a backup:
RMAN> BACKUP DATABASE PLUS ARCHIVELOG;
Which statement is true about the execution of these commands?
A. It backs up two copies each of the data files to disk and media, and two copies of archived logs to media.
B. The backup terminates because the backup destination for disk is not specified in the BACKUP command.
C. It backs up the data files and archived logs to media, making two copies of each data file and archived logs.
D. It backup up the data files and archived logs, making one copy of each data file and archived log on disk and media.
Correct Answer: C


Q.226
Examine the RMAN command:
RMAN> BACKUP VALIDATE DATABASE;
Which statement is true about the execution of the command?
A. Block change tracking must be enabled before executing this command.
B. The database must be running in archivelog mode for the successful execution of this command.
C. The command checks for blocks containing all zeros, an invalid checksum, or a corrupt block header.
D. The command checks for blocks that contain a valid checksum and matching headers and footers, 
   but that has logically inconsistent contents.
E. A complete database backup must exist before executing this command.
Correct Answer: C


Q.227
After implementing full Oracle Data Redaction, you change the default value for the number data type as follows:
SQL> SELECT NUMBER_VALUE FROM REDACTION_VALUES_FOR_TYPE_FULL;
 NUMBER_VALUE
- ------------------------
0
SQL> EXEC DBMS_REDACT.UPDATE_FULL_REDACTI0N_VALUES(-1)
PL/SQL procedure successfully completed.
SQL> select number_value from redaction_values_for_type_full;
NUMBER VALUE
- -----------------------
- 1
After changing the value, you notice that FULL redaction continues to redact numeric data with a zero.
What must you do to activate the new default value for numeric full redaction?
A. Re-enable redaction policies that use FULL data redaction.
B. Re-create redaction policies that use FULL data redaction.
C. Re-connect the sessions that access objects with redaction policies defined on them.
D. Flush the shared pool.
E. Restart the database instance.
Correct Answer: E


Q.228
You want to consolidate databases for the CRM, ERP, and SCM applications by migrating them to pluggable databases (PDBs).
You have already created a test system to support the consolidation of databases 
in a multitenant container database (CDB) that has multiple PDBs.
What is the easiest way to perform capacity planning for consolidation?
A. capturing the most resource-intensive SQL statements in a SQL Tuning 
   Set on the production system and using the SQL Tuning Advisor on the test system
B. capturing the workload on the production system and using Consolidated Database Replay to replay 
   the workload of all production systems simultaneously for all PDBs
C. capturing the most resource-intensive SQL statements in a SQL Tuning Set on the production system 
   and using the SQL Performance Analyzer on the test system
D. capturing the workload on the production system and replaying the workload for one PDB at a time on the test system
Correct Answer: A


Q.229
Which two are direct benefits of the multiprocess, multithreaded architecture of Oracle Database 12c when it is enabled?
A. Reduced logical I/O
B. Reduced virtual memory utilization
C. Reduced CPU utilization
D. Reduced physical I/O
E. Improved Serial Execution performance
Correct Answer: B,C


Q.230
Which two can be backed up by using RMAN in a database that is in ARCHIVELOG mode?
A. online redo log files while the database is open
B. data files while the database is open
C. PFILE and password file in MOUN Tstate
D. data blocks in data files that have changed since the previous backup
E. data files while the database is in NOMOUNT state
Correct Answer: A,B


Q.231
 You want to create a duplicate database DUP_DB from your production database PROD on the same host.
 The PROD database uses Automatic Storage Management (ASM) for storage.
 Regular backups are taken using RMAN connected to a recovery catalog.
 You create an auxiliary instance and want to execute the command:
 What is a prerequisite for the successful execution of this command?
A. The target database must be in MOUNT state.
B. RMAN must be connected to the target database instance and the auxiliary instance.
C. A most recent backup set of the PROD database must exist.
D. Flashback must be enabled for the PROD database
Correct Answer: B

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