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NEW QUESTION 1
Examine the steps to configure Oracle Secure Backup (OSB) for use with RMAN: 1.Create media families for data files and archived redo log files.
2.Configure database backup storage selectors or RMAN media management parameters. 3.Create an OSB user preauthorized for RMAN operations.
4. Configure RMAN Access to the OSB SBT.
5. Disable Non-Uniform Memory Access (NUMA) awareness by setting the ob_ignore_numa parameter to 0.
Identify the steps in the correct order.

  • A. 1, 4, 3, 2, 5
  • B. 1, 3, 4, 5, 2
  • C. 4, 3, 1, 2, 5
  • D. 4, 3, 5, 1, 2

Answer: C

NEW QUESTION 2
Which two statements are true about a multitenant architecture?

  • A. Each pluggable database (PDB) has its own initialization parameter file.
  • B. A PDB can have a private undo tablespace.
  • C. Log switches occur only at the container database level.
  • D. A PDB can have a private temporary tablespace.
  • E. Each PDB has a private control fil

Answer: CD

Explanation: You are only able to switch the archived logs when you connect to the root of a CDB, but you cannot switch archived redo logs when connected to a PDB. You can able to create a PDB without temporary tablespace but not able to make it use the temporary tablespace of CDB.

NEW QUESTION 3
Your database is running in archivelog mode and a nightly backup of the database, along with an autobackup of the control file, is taken by using RMAN. Because of a media failure, the SPFILE and the control files are lost.
Examine the steps to restore the SPFILE and the control file to mount the database:
1. Set DBID of the target database in RMAN.
2. Start the database instance by using the STARTUP FORCE NOMOUNT command in RMAN.
3. Restore the control files from the backup.
4. Mount the database.
5. Restore the SPFILE from the autobackup.
6. Create a PFILE from the recovered SPFILE.
7. Restart the instance in NOMOUNT state. Identify the required steps in the correct order.

  • A. 1, 2, 5, 3, 6, 4
  • B. 1, 2, 3, 5, 6, 4
  • C. 2, 1, 5, 7, 3, 4
  • D. 2, 1, 5, 6, 7, 4, 3

Answer: C

NEW QUESTION 4
Which three statements are true about Scheduler Windows? (Choose three.)

  • A. Only one window can be open at one time.
  • B. Consumer groups are associated with windows.
  • C. Windows work with job classes to control resource allocation.
  • D. A database service name must be provided during window creation.
  • E. The Resource Manager can automatically start windowed jobs or change resource allocation among windowed jobs.

Answer: ACD

NEW QUESTION 5
Examine the list of possible steps to transport a tablespace across platforms that have the same compatibility level, character sets, and endian format:
1. Make the tablespace read-only at the source database.
2. Export metadata from the source database.
3. Import metadata into the target database.
4. Transfer the dump file and data files to the target machine.
5. Convert data files by using Recovery Manager (RMAN).
6. Make the tablespace read-write at the target database.
Identify the required steps in the correct order. (Choose the best answer.)

  • A. 1, 2, 4, 3, and 6
  • B. 2, 4, 3, and 5
  • C. 2, 4, and 3
  • D. 1, 5, 2, 4, 3, and 6

Answer: A

NEW QUESTION 6
Which two statements are true about dropping a pluggable database (PDB)?

  • A. A PDB must be in mount state or it must be unplugged.
  • B. The data files associated with a PDB are automatically removed from disk.
  • C. A dropped and unplugged PDB can be plugged back into the same multitenant container database (CDB) or other CDBs.
  • D. A PDB must be in closed state.
  • E. The backups associated with a PDB are removed.
  • F. A PDB must have been opened at least once after creatio

Answer: AC

NEW QUESTION 7
Examine the initialization parameter that is set in the PFILE: DB_CREATE_FILE_DEST ='/u01/app/oracle/oradata/'
You execute the following command to create theCDB1. container database (CDB): SQL>CREATE DATABASE CDB1
DEFAULT TABLESPACE users
DEFAULT TEMPORARY TABLESPACE temp
UNDO TABLESPACE undotbsl
ENABLE PLUGGABLE DATABASE SEED
SYSTEM DATAFILES SIZE125M AUTOEXTEND ON NEXT 10M MAXSIZE UNLIMITED SYS AUX DATAFILES SIZE 100M;
Which three statements are true?

  • A. It creates a multitenant container database with a root and a seed pluggable database (PDB) that are opened in read-write and read-only modes, respectively.
  • B. The files created for both the root and seed databases use Oracle Managed Files (OMF).
  • C. It creates a multitenant container database with the root and seed databases opened and one PDB mounted.
  • D. It sets the users tablespace as the default for both the root and seed databases.
  • E. undotbs1 is used as the undo tablespace for both the root and seed databases.
  • F. It creates a multitenant container database with the root database opened and the seed database mounted.

Answer: ABE

Explanation: The seed actually doesn’t use anything since it’s read-only, but any PDB created from the seed will use the undotbs1 undo tablespace. Each PDB can have its own default tablespace, but cannot change the undo tablespace.

NEW QUESTION 8
You issue commands in SQL*Plus as the Oracle owner, to enable multithreading for your UNIX-based Oracle 12c database:
CONNECT/AS SYSDBA
ALTER SYSTEMSETTHREADED EXECUTION= TRUESCOPE=SPFILE; SHUTDOWNIMMEDIATE
You then restart the instance and get an error: STARTUP
ORA-01031:insufficientprivileges
Why does the startup command return the error shown?

  • A. because the threaded architecture requires exiting from sql*pIus and reconnecting with sql*PIus / as sysdba before issuing a startup command
  • B. because the threaded architecture requires issuing a new connect / as sysdba from within sql*pIus before issuing a startup command
  • C. because the threaded architecture requires authentication using a password file before issuing a startup command
  • D. because the threaded architecture requires connecting to the instance via a listener before issuing a startup command
  • E. because the threaded architecture requires restarting the listener before issuing a startup command

Answer: C

Explanation: The first pitfall is, when you try to configure your database for such use. You need a connection which is authenticated trough the password file. Otherwise you will get are error similar to this. https://petesdbablog.wordpress.com/2013/07/09/12c-new-feature-multi-process-multi-threadedoracle/

NEW QUESTION 9
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2018-04-01T12:03:00.71<!--StartFragment-->
Your database has a table CUSTOMERS that contains the columns CUST_NAME, AMT_DUE, and OLD_STATUS.
Examine the commands executed and their output:
SQL> UPDATE customers SET amt_due=amt_due+amt_due*l.1 WHERE cust_name='JAMES'; 1row updated.
SQL> ALTER TABLE customers DROP COLUMN old_status; Table Altered
SQL> UPDATE customers SET amt_due=amt_due+amt_due*1.5 WHERE cust_name='JAMES'; 1 row updated.
SQL> COMMIT;
SQL> SELECT versions_xid AS XID, versions_startscn AS START_SCN, versions_endcscn AS END_SCN, versions_operation AS OPERATION, amt_due
FROM customers VERSIONS BETWEEN SCN MINVALULE AND MAXVALUE WHERE
cust_name='JAMES';.
XID START_SCN END_SCN OPERATION AMT_DUE
---- -------- ------ -------- ------ 07002f00cl030000 1706337 1706337 U 3300
2018-04-01T12:03:00.71<!--EndFragment-->
Why is it that only one update is listed by the Flashback Version Query?

  • A. Supplemental logging is not enabled for the database.
  • B. The undo data that existed for versions of rows before the change to the table structure is invalidated.
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set to a lower value and the undo data pertaining to the first transaction is flushed out.
  • D. Undo retention guarantee is not enabled.
  • E. Flashback Data Archive is full after the first update statement.

Answer: C

NEW QUESTION 10
Your database is running in archivelog mode and regular nightly backups are taken. Due to a media failure, the current online redo log group, which has one member, is lost and the instance is aborted. Examine the steps to recover the online redo log group and move it to a new location.
1. Restore the corrupted redo log group.
2. Restore the database from the most recent database backup. 3.Perform an incomplete recovery.
4.Relocate the member of the damaged online redo log group to a new location. 5.Open the database with the resetlogs option.
6. Issue a checkpoint and clear the log. Identify the required steps in the correct order.

  • A. 1, 3, 4, 5
  • B. 6, 3, 4, 5
  • C. 2, 3, 4, 5
  • D. 6, 4, 3, 5

Answer: C

Explanation: If the group is Current Then it is the log that the database is currently writing to And you should Attempt to clear the log; if impossible, then you must restore a backup and perform incomplete recovery up to the most recent available redo log.
Reference: http://docs.oracle.com/cd/B19306_01/backup.102/b14191/recoscen.htm#i1006437

NEW QUESTION 11
Your database is running in archive log 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.

Answer: BE

Explanation: https://docs.oracle.com/database/121/BRADV/flashdb.htm#BRADV582 Section: About Flashback Database
Flashback Database uses its own logging mechanism, creating flashback logs and storing them in the fast recovery are
A. You can only use Flashback Database if flashback logs are available. To take
advantage of this feature, you must set up your database in advance to create flashback logs.

NEW QUESTION 12
You perform an RMAN block media recovery on the tools 01.dbf data file in the SALES database. Which two statements are true? (Choose two.)

  • A. You must ensure that the SALES database is mounted or open.
  • B. You must restore a backup control file to perform a block media recovery.
  • C. You must take the tools01.dbf data file offline before you start a block media recovery.
  • D. You must put the database in NOARCHIVELOG mode to perform a block media recovery.
  • E. You can perform only a complete media recovery of individual blocks, point-in-time recovery of individual data blocks is not supported.

Answer: AE

NEW QUESTION 13
In the SPFILE, UNDO TABLESPACE is Set to UNDO TBS.
You rename the undotbs undo tablespace:
ALTER TABLESPACE undotbs RENAME TO undotbs_old; Which statement is true?

  • A. The tablespace will be renamed but the data file headers will not be updated.
  • B. The statement will fail because you cannot rename an undo tablespace.
  • C. The tablespace will be renamed and all the changes will be logged in the alert log.
  • D. The tablespace will be renamed and a message written to the alert log indicating that you should change the corresponding initialization parameter.
  • E. You must set the undo_tablespace parameter to some other tablespace name before renaming undotbs.

Answer: C

NEW QUESTION 14
Which four actions are possible during an Online Datafile Move operation?

  • A. Creating and dropping tables in the datafile being moved
  • B. Performing file shrink of the data file being moved
  • C. Querying tables in the datafile being moved
  • D. Performing Block Media Recovery for a data block in the datafile being moved
  • E. Flashing back the database
  • F. Executing DML statements on objects stored in the datafile being moved

Answer: ACEF

Explanation: “The good news is that Oracle 12cR1 now offers the ability to move entire datafiles between different storage locations without ever having to take the datafiles offline. The datafiles being moved remain completely accessible to applications in almost all situations, including querying against or performing DML and DDL operations against existing objects, creating new objects, and even rebuilding indexes online. Online Move Datafile (OMD) also makes it possible to migrate a datafile between non-ASM and ASM storage (or vice-versa) while maintaining transparent application access to that datafile’s underlying database objects. OMD is completely compatible with online block media recovery, the automatic extension of a datafile, the modification of a tablespace between READ WRITE and READ ONLY mode, and it even permits backup operations to continue against any datafiles that are being moved via this feature.”
http://muhammad-asif-dba.blogspot.com.br/2013/11/oracle-12c-database-online-movedatafile. html

NEW QUESTION 15
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
NOFILENAMECHECK PASSWORD FILE SPFILE;
Which two statements are true about the execution of the DUPLICATE command?

  • A. All archive redo log files are automatically copied to the duplicate database.
  • B. The duplicate database has the same directory structure as the source database.
  • C. The duplicate database is created by using the backups created during the execution of the DUPLICATE command.
  • D. The password file and SPFILE for the duplicate database DUP1 are created in their respective default locations.
  • E. The duplicate database is created without using RMAN backups and PROD1 is allowed to remain open during duplication.

Answer: AE

NEW QUESTION 16
Which three statements are true about the SQL*Loader utility?

  • A. It can be used to load data from multiple external files into multiple tables.
  • 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 create tables using data that is stored in external files.
  • E. It can be used to generate unique sequential values in specified columns while loading dat

Answer: ABE

NEW QUESTION 17
Examine the parameters for your database instance: NAME TYPE VALUE
-----------------------------------------------------------------------------------------------------
optimizer_adaptive_reporting_onlyboolean FALSE optimizer_capture_sql_plan_baselinesboolean FALSE optimizer_dynamic_samplinginteger 2
optimizer_features_enablestring 12.1.0.1
Which three statements are true about the process of automatic optimization by using statistics feedback?

  • A. The optimizer automatically changes a plan during subsequent execution of a SQL statement if there is a huge difference in optimizer estimates and execution statistics.
  • B. The optimizer can CK optimize a query only once using cardinality feedback.
  • C. The optimizer enables monitoring for cardinality feedback after the first execution of a query.
  • D. The optimizer does not monitor cardinality feedback if dynamic sampling and multicolumn statistics are enabled.
  • E. After the optimizer identifies a query as a re-optimization candidate, statistics collected by the collectors are submitted to the optimizer.

Answer: ACD

Explanation: C: During the first execution of a SQL statement, an execution plan is generated as usual.
D: if multi-column statistics are not present for the relevant combination of columns, the optimizer can fall back on cardinality feedback.
(not B)* Cardinality feedback. This feature, enabled by default in 11.2, is intended to improve plans for repeated executions.
optimizer_dynamic_sampling optimizer_features_enable
Dynamic sampling or multi-column statistics allow the optimizer to more accurately estimate selectivity of conjunctive predicates.
Note:
* OPTIMIZER_DYNAMIC_SAMPLING controls the level of dynamic sampling performed by the optimizer.
Range of values. 0 to 10
Cardinality feedback was introduced in Oracle Database 11gR2. The purpose of this feature is to automatically improve plans for queries that are executed repeatedly, for which the optimizer does not estimate cardinalities in the plan properly. The optimizer may misestimate cardinalities for a variety of reasons, such as missing or inaccurate statistics, or complex predicates. Whatever the reason for the misestimate, cardinality feedback may be able to help.

NEW QUESTION 18
ENCRYPT_TS an encrypted tablespace that contains tables with data.
Which statement is true about queries and data manipulation language statements on these tables?

  • A. Queries may be performed on columns that have the NO SALT option.
  • B. Data remains encrypted when read into the buffer cache.
  • C. Redo generated by DML remains encrypted.
  • D. UNDO generated by DML remains encrypted if the UNDO tablespace is encrypted.
  • E. Data remains encrypted when read into the PGA for direct path read

Answer: C

NEW QUESTION 19
You are administering a multitenant container database (CDB) cdb1. Examine the command and its output:
SQL>show parameterfile NAMETYPEVALUE
-----------------------------------------------------------------------
db_create_file_deststring db_file_name_convertstring db_filesinteger200
You verify that sufficient disk space is available and that no file currently exists in the ‘/u0l/app/oracle/oradata/cdb1/salesdb' location.
You plan to create a new pluggable database (PDB) by using the command: SQL>CREATEPLUGGABLEDATABASESALESPDB
ADMINUSERsalesadmIDENTIFIED 3Y password ROLES=(dba)
DEFAULTTABLESPACEsales
DATAFILE' /u01/app/oracle/oradata/cdb1/salesdb/sales01 .dbf’SIZE 250M AUTOEXTEND ON FILE_NAME_CONVERT=(‘/u01/app/oracle/oradata/cdb1/pdbseed/', '/u01/app/oracle/oradata/cdb1/salesdb/')
STORAGE(MAXSIZE2G)
PATK_PREFIX='/u01/app/oracle/oradata/cdb1/SALESPDB'; Which statement is true?

  • A. SALESPDB is created and is in mount state.
  • B. PDB creation fails because the D3_file_name_convert parameter is not set in the CDB.
  • C. SALESPDB is created and is in read/write mode.
  • D. PDB creation fails because a default temporary tablespace is not defined for SALESPD

Answer: A

Explanation: We need seed tablespace to create new plugable db.
/u01/app/oracle/oradata/orcl/pdbseed/sysaux01.dbf
/u01/app/oracle/oradata/orcl/pdbseed/system01.dbf By default. Seed has two tbs.

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