1z0-062 Oracle Database 12c: Installation and Administration Dumps
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Sample Question 4
When is the UNDO_RETENTION parameter value ignored by a transaction?
A. when there are multiple undo tablespaces available in a database B. when the data file of the undo tablespace is autoextensible C. when the undo tablespace is of a fixed size and retention guarantee is not enabled D. when Flashback Database is enabled
Which two services may you see on the My Service Dashboard page? (Choose two.)
A. Network Cloud Service B. User Cloud Service C. Compute Cloud Service
Answer: C,D
Sample Question 6
You are managing an Oracle Database 12c database. The database is open, and you plan to perform Recovery Manager (RMAN) backups. Which three statements are true about these backups? (Choose three.)
A. The backups would be consistent. B. The backups would be possible only if the database is running in ARCHIVELOG mode. C. The backups need to be restored and the database has to be recovered in case of a media failure. D. The backups would be inconsistent. E. The backups by default consist of all the data blocks within the chosen files or the full database
Answer: B,C,D
Sample Question 7
The HR.DEPARTMENTS table is the parent of the HR.EMPLOYEES table. The
EMPLOYEES.DEPARTMENT_ID column has a foreign key constraint with the ON
DELETE CASCADE option that refers to the DEPARTMENTS.DEPARTMENT_ID column.
An index exists on the DEPARTMENTS.DEPARTMENT_ID column. A transaction deletes
a primary key in the DEPARTMENTS table, which has child rows in the EMPLOYEES
table.
Which statement is true?
A. The transaction acquires a table lock only on the DEPARTMENTS table until the
transaction is complete. B. The transaction acquires a table lock on the DEPARTMENTS table. This lock enables
other sessions to query but not update the DEPARTMENTS table until the transaction on
the DEPARTMENTS table is complete. C. The transaction acquires a table lock on the EMPLOYEES table. This lock enables
other sessions to query but not update the EMPLOYEES table until the transaction on the
DEPARTMENTS table is complete.
Answer: C
Sample Question 8
Which three statements are true about server-generated alerts? (Choose three.)
A. Server-generated alerts notify administrators of problems that cannot be
resolved automatically B. Alerts are not issued for locally managed read-only tablespaces. C. Response actions cannot be specified for server-generated alerts. D. Stateful alerts can be queried only from the DBA_ALERT_HISTORY view. E. When an alert is cleared, it is moved to the DBA_ALERT_HISTORY view.
Your database is running in ARCHIVELOG mode. You want to take a consistent whole database backup. Which two statements are true in this scenario? (Choose two.)
A. The user-managed backup consists of only formatted data blocks. B. The database must be shut down to take a user-managed backup. C. The RMAN backup contains only data files. D. The RMAN backup can be performed while the database is open. E. The database must be in MOUNT state to take RMAN backup.
Answer: A,B
Sample Question 10
Because of a logical corruption in the EMPLOYES tables, you want to perform Tablespace
Point-in-Time Recovery (TSPITR) to recover the table. Before you started the TSPITR
process, you queried the TS_PITR_CHECK view and you realized that the table has a
referential constraint with DEPARTMENTS that exists in another tablespace, MASTERTBS. Which two actions will permit the TSPITR to work? (Choose two.)
A. Taking the MASTERTBS tablespace offline B. Dropping the relationship between the tables C. Adding the MASTERTBS tablespace to the recovery set
Which statement is true about the loss of a data file belonging to the default undo tablespace?
A. The database remains open in read-only mode. B. The database is put in MOUNT state and requires recovery to be opened. C. The database remains open for querying but no DML statements can be executed except by the users with SYSDBA privilege. D. All the noncommitted transactions are lost. E. The database instance aborts.
Answer: C
Sample Question 12
In your database, archive logging and control file autobackup are enabled.
The data files and redo log files are intact but control files are impacted due to media
failure.
In which two recovery scenarios must you use the RESETLOGS option? (Choose two.)
A. One control file copy is intact so the spfile is changed to refer to only one copy. B. One control file copy is intact and damaged control file copies have to be restored to the
default location. C. All copies of the control file are damaged and the CREATE CONTROLFILE statement is
executed manually. D. All copies of the control file are damaged and the auto backed up control file is used for
recovery
Answer: C,D
Sample Question 13
Which three statements are true about Automatic Workload Repository (AWR)? (Choose three.)
A. An AWR snapshot shows the SQL statements that are producing the highest load on the system, based on criteria such as elapsed time and CPU time. B. AWR data is stored in memory and in a database. C. All AWR tables belong to the SYSTEM schema. D. The manageability monitor (MMON) process gathers statistics and creates an AWR snapshot that is used by the self-tuning components in a database. E. An AWR snapshot contains system-wide tracing and logging information.
Answer: A,B,D
Sample Question 14
You want execution of large database operations to suspend, and then resume, in the
event of space allocation failures.
You set the value of the initialization parameter RESUMABLE_TIMEOUT to 3600.
Which two statements are true? (Choose two.)
A. Before a statement executes in resumable mode, the ALTER SESSION
ENABLE RESUMABLE statement must be issued in its session. B. Data Manipulation Language (DML) operations are resumable, provided that they are
not embedded in a PL/SQL block C. A resumable statement can be suspended and resumed only once during execution. D. A suspended statement will report an error if no corrective action has taken place
during a timeout period.
Answer: A,D
Sample Question 15
Examine the details of the uncompressed, non-partitioned heap table CITIES. Examine the command:
SQL> ALTER TABLE cities SHRINK SPACE COMPACT;
What must you do before executing it?
A. Ensure free space that is approximately equal to the space used by the table should be
available. B. Ensure there are no pending transactions on the table. C. Enable row movement is enabled.
Answer: C
Sample Question 16
Your database is configured for ARCHIVELOG mode, and a daily full database backup
is taken. RMAN is configured to perform control file autobackup.
In which three scenarios do you need media recovery? (Choose three.)
A. loss of all the copies of the control file B. loss of all the inactive online redo log group members C. loss of a data file that belongs to the active undo tablespace D. loss of data files that belong to the SYSTEM tablespace
Answer: A,C,D
Sample Question 17
What must you use to read data from a table in your database and write it to an
external table?
A. Use SQL* LOADER conventional path load. B. Use SQL* LOADER direct path load. C. Use CREATE TABLE. . ORGANIZATION EXTERNAL command
with ORACLE_LOADER access driver. D. Use CREATE TABLE. . ORGANIZATION EXTERNAL command
with ORACLE_DATAPUMP access driver
Answer: D
Sample Question 18
Which two statements are true about SQL *Loader Express Mode in an Oracle 12c database? (Choose two.)
A. The DEGREE_OF_PARALLELISM parameter is set to AUTO. B. You cannot have multiple SQL *Loader data files. C. If no data file is specified, it assumes the data file to be <table-name>.dat in the current directory and uses it. D. You can have multiple bad files created when loading in parallel. E. You can selectively load rows into a table based on a filter.
Which four statements are true about the components of the Oracle Scheduler? (Choose
four.)
A. A schedule can be specified to a single job only. B. A scheduler job can point to a chain instead of pointing to a single program object. C. A job may get started automatically when a window opens. D. A program and job can be specified as part of a schedule definition. E. A job is specified as part of a program specification. F. A program can be used in the definition of multiple jobs. G. A program and schedule can be specified as part of a job definition.
Answer: B,C,F,G
Sample Question 20
Examine the command: SQL> CONNECT hr/hr@orcl Which two configurations allow this command to execute successfully? (Choose two.)
A. In the tnsnames.ora file, the SERVICE_NAME value of CONNECT_DATA should be explicitly suffixed with the domain name. B. The SERVICE_NAMES initialization parameter should contain the name orcl in the database host. C. The orcl TNS alias should be defined such that it is resolvable by a client running on the database host. D. The orcl TNS alias should be defined in the tnsnames.ora file on both the client and the database host. E. The TNS_ADMIN environment variable should be set to orcl on the client.
Answer: B,C
Sample Question 21
When is the UNDO_RETENTION parameter value ignored by a transaction?
A. when there are multiple undo tablespaces available in a database B. when the data file of the undo tablespace is autoextensible C. when the undo tablespace is of a fixed size and retention guarantee is not enabled
To enable faster incremental backups, you enabled block change tracking for the database.
Which two statements are true about the block change tracking file? (Choose two.)
A. Multiple change tracking files can be created for a database. B. The change tracking file must be created after the first level 0 backup. C. RMAN does not support backup and recovery of the change tracking file. D. The database clears the change tracking file and starts tracking changes again,
after whole database restore and recovery operations.
Answer: C,D
Sample Question 23
Which set of statements is true about data dictionary views? 1. They are stored in the SYSTEM tablespace. 2. They are based on virtual tables. 3. They are owned by the SYS user. 4. They can be queried by a normal user only if the 07_DICTIONARY_ACCESSIBILITY parameter is set to TRUE. 5. The V$FIXED_TABLE view can be queried to list the names of these views. 6. They are owned by the SYSTEM user.
A. 2, 5, and 6 B. 1, 2, and 3 C. 1 and 3 D. 2, 3, 4, and 5
Which three statements are true about the upgrade process? (Choose three.)
A. All system triggers are disabled during the upgrade process. B. Only queries on fixed views execute without errors until you run the catctl.pl script. C. The COMPATIBLE parameter must be set to at least 12.1.0 before issuing the
command D. All job queues remain active during the upgrade process. E. Only connections AS SYSDBA are allowed during the upgrade process.
Answer: A,D,E
Sample Question 26
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 generates lots of redo. Which two actions would you take to solve this problem? (Choose two.)
A. Increase the size of the temporary tablespace. B. Enable Automatic Memory Management (AMM). C. Enable undo retention guarantee. D. Enable temporary undo for the database. E. Increase the size of the redo log buffer.
Answer: A,D
Sample Question 27
Your database has archive logging enabled and RMAN backups are taken at
regular intervals. A data file in the USERS tablespace is damaged.
Which command must you execute before starting the recovery of this tablespace?
A. ALTER TABLESPACE users OFFLINE B. STARTUP FORCE NOMOUNT C. STARTUP FORCE
Answer: A
Sample Question 28
You create a locally managed tablespace ORDERS_TBS with automatic segment
management.
You then create the table DAILY_ORDS_LST in the ORDERS_TBS tablespace using the
command.
CREATE TABLE daily_ords_1st(ordno NUMBER, ord_date DATE) PCTFREE 20;
How does the PCTFREE storage parameter influence data storage for this table?
A. It allows only 80% of space to be occupied in all data blocks of this table. B. It minimizes row chaining during row insertion. C. It minimizes row migration during existing row data updation.
Answer: A
Sample Question 29
Which two statements are true about Oracle network connections? (Choose two.)
A. A listener may listen on behalf of only one database instance at a time. B. A server process checks a user’s authentication credentials and creates a session if
the credentials are valid. C. The listener continuously monitors a connection after the user process connects to a
service handler. D. The listener always spawns a new server process to deal with each new connection. E. A connection request from a client is always first received by a listener running on the
port that is used for the connection request for the database server.
Answer: B,E
Sample Question 30
What is pre-requisite to alter a role?
A. You should be granted the DBA role B. You should set the OS_ROLES parameter to true. C. You should be granted the role with the GRANT OPTION. D. You should have the ALTER ANY ROLE system privilege.
Answer: D
Sample Question 31
Which four operations performed after the Oracle Restart installation are automatically
added to the Oracle Restart configuration? (Choose four.)
A. listener configured by using NETCA B. database service created by using SRVCTL C. database created by using a SQL
statement D. database created by using DBCA E. ASM instance created by using ASMCA
Which task is performed by a background process in a database instance?
A. Connecting between a client process and a dispatcher B. Executing PL/SQL code C. Creating dedicated server connections D. Copying online redo log files to offline storage
Answer: D
Sample Question 33
One of your databases supports an OLTP workload.The default UNDO tablespace is fixed size with:1. RETENTION NOGUARANTEE2. UNDO_RETENTION is 12 minutesUser SCOTT gets this error after a query on the SALES table has run for more than 15minutes:ORA-01555: snapshot too oldWhich three factors taken separately or in some combination might be the cause?(Choose three.)
A. An update was made to the SALES table after the query began B. An update to the SALES table was committed after the query began C. A committed delete to the SALES table was made more than 12 minutes before the
query began D. An uncommitted update to the SALES table was made more than 12 minutes before the
query began E. A committed update to the SALES table was made more than 12 minutes before the
query began
Answer: A,D,E
Sample Question 34
Identify two prerequisites for configuring Enterprise Manager Database Express (EM
Express).
A. Grant the APEX_PUBLIC_USER role to the SYSMAN user. B. Use the DBMS_XDB_CONFIG.SETHTTPPORT procedure to configure a port
number for Oracle HTTP Server. C. Install Oracle HTTP Server. D. Configure at least one dispatcher for the TCP/IP protocol.
Answer: B,D
Sample Question 35
Examine the parameters:
Your database instance is started with a PFILE. You want to increase the size of the buffer cache. Free memory is available to increase
the size of the buffer cache.
You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;
Which is the outcome?
A. Change is applied to the current instance, but does not persist after instance restart. B. The value is changed only in the PFILE and takes effect at the next instance startup.
Answer: A
Sample Question 36
Which two statements are true about initialization parameter files? (Choose two.)
A. A lost or damaged SPFILE can be re-created by using the parameter values listed in the alert log. B. A PFILE must exist for an SPFILE to be created. C. The ALTER SYSTEM command cannot be used to change the value of any parameter if a database instance has started using a PFILE. D. Both the SPFILE and PFILE must always reside on a file system accessible from the database host server. E. On startup, by default a database instance always first searches for an SPFILE, and if it does not find any, searches for a PFILE.
Answer: B,E
Sample Question 37
Which two options can be configured for an existing database by using the Database
Configuration Assistant (DBCA)? (Choose two.)
A. Configure Label Security B. Database Vault in ORACLE_HOME C. Oracle Suggested Backup Strategy
Answer: A,B
Sample Question 38
The performance of your database degrades between 11:00 AM and 3:00 PM.
Automatic Workload
Repository (AWR) snapshots are collected on an hourly basis.
What is the most efficient way of diagnosing this problem?
A. Create a custom ADDM task for the period defined by the snapshots taken between
11:00 AM and 3:00 PM. B. Analyze the latest Automatic Database Diagnostic Monitor (ADDM) report. C. Analyze the hourly ADDM reports generated between 11:00 AM and 3:00 PM.
Answer: A
Sample Question 39
Which three functions can be performed by the SQL Tuning Advisor? (Choose three.)
A. recommending creation of indexes based on SQL workload B. recommending restructuring of SQL statements that have suboptimal plans C. checking schema objects for missing and state statistics D. recommending optimization of materialized views E. generating SQL profiles
Answer: B,C,E
Sample Question 40
Automatic Shared Memory Management is enabled for your database instance. You notice
that there are SQL statements performing poorly because of repeated parsing activity.
Which action generates recommendations to overcome the performance issues?
A. running the Memory Advisor for the buffer cache B. running the Memory Advisor for the library C. running the Memory Advisor for the SGA
Answer: B
Sample Question 41
Which three statements are true about the Pre-Upgrade Information Tool? (Choose three.)
A. It clears all user recycle bins in a database and releases their storage space. B. It writes a list of invalid SYS and SYSTEM object to the registry$sys_inv_objs table. C. It evaluates the dependencies of network utility packages. D. It identifies any deprecated and unsupported parameters.
Answer: B,C,D
Sample Question 42
Which background process does Automatic Shared Memory Management use to coordinate the sizing of memory components?
A. PMON B. SMON C. MMNL D. MMAN E. MMON
Answer: D
Sample Question 43
One of your databases has archive logging enabled and RMAN backups are taken at
regular intervals.
The data file for the USERS tablespace is corrupt.
Which command must you execute before starting the recovery of this tablespace?
A. STARTUP FORCE B. ALTER TABLESPACE users OFFLINE IMMEDIATE; C. SWITCH DATAFILE ALL; D. ALTER TABLESPACE users OFFLINE NORMAL; E. ALTER TABLESPACE users OFFLINE TEMPORARY;
Answer: E
Sample Question 44
What should you do for a Scheduler to start a job when a file arrives on a remote system?
A. Start an Oracle database instance on the remote system and register the Scheduler agent with this database. B. Install the Scheduler agent on the remote system and register the agent with the database on the local system. C. Ensure dedicated server is enabled on both the local and remote databases. D. Shutdown the file watcher on the local system.
You plan to install the Oracle Database 12c software. You want to use Oracle Automatic Storage Management (ASM) for storage and Oracle Restart for managing components. Oracle Grid Infrastructure for a Standalone Server is already installed on the server. Which three statements must be true for successful installation of the Oracle Database 12c software? (Choose three.)
A. The OSBACKUPDBA, OSDGDBA, and OSKMDBA OS groups must be created. B. An operating system OSDBA group must be created for users with the SYSDBA system privilege. C. The Oracle Database 12c software owner and the Oracle Grid Infrastructure owner must belong to the same Oracle Inventory Group. D. The Oracle Database 12c installation must have a separate Oracle inventory directory E. An operating system OSOPER group be created for users with the SYSOPER system privilege.
Answer: B,C,E
Sample Question 46
In which three situations can you use threshold server-generated alerts to helpdiagnose and fix problems? (Choose three.)
A. when free space in a locally managed tablespace falls below a specified percentage B. when the number of logons per second exceeds a specific value C. when a resumable statement is suspended D. when the total number of locked user account exceeds a specific value E. when the total number of logons exceeds a specific value F. when free space in a dictionary managed tablespace falls below a specified percentage
Which two tasks must you perform before you begin the upgrade process to Oracle Database 12c? (Choose two.)
A. Put all readonly tablespaces in read write mode B. Recompile all invalid objects C. Set the compatible parameter to 12.1.0.1 D. Gather dictionary statistics E. Empty all user recycle bins
Answer: B,E
Sample Question 48
A PFILE exists for your database. You want to increase the value of the PROCESSES parameter from 300 to 400 and make it persistent for your database instance. You plan to use the ALTER SYSTEM command. Which two methods can be used? (Choose two.)
A. Edit PFILE manually, re-create the SPFILE from the edited PFILE, and restart the database instance by using the SPFILE. B. Create an SPFILE, start the database instance by using the SPFILE, and then execute the ALTER SYSTEM SET PROCESSES=400 SCOPE=SPFILE command. C. Create an SPFILE, start the database instance by using the SPFILE, and then execute the ALTER SYSTEM SET PROCESSES=400 SCOPE=DEFERRED command. D. Create an SPFILE, STARTUP MOUNT the database instance by using the SPFILE, and then execute the ALTER SYSTEM SET PROCESSES=400 command. E. Start the database instance by using the PFILE, and then execute the ALTER SYSTEM SET PROCESSES=400 SCOPE=BOTH command. F. Use the PFILE to STARTUP MOUNT the database instance, and then execute the ALTER SYSTEM SET PROCESSES=400 command.
Answer: C,F
Sample Question 49
Which statement is true about unified auditing?
A. The unified audit trail, by default, resides in a read-only table in the AUDSYS schema in
the SYSAUX tablespace. B. Only the CREATE, ALTER, and DROP statements are audited for all users, including
SYS. C. Unified auditing is enabled only if the AUDIT_TRAIL parameter is set to NONE
Your database is configured in ARCHIVELOG mode, and daily full database backups are taken. RMAN is configured to perform control file autobackups. Which statement is true about the loss of a duplexed control file?
A. The database remains open but transactions are not permitted. B. The database instance aborts, and media recovery is required after restoration of the control file to open the database. C. The database instance remains open and the control file can be restored without shutting down the database. D. The database instance aborts and a control file restore operation does not require media recovery.
Answer: C
Sample Question 51
In your database, the STATISTICS_LEVEL parameter is set to TYPICAL and an Automatic Workload Repository (AWR) snapshot is taken every 30 minutes. Which two statements are true about the Automatic Database Diagnostic Monitor (ADDM)? (Choose two.)
A. It measures database performance by analyzing the wait time and CPU time of all non-idle user sessions. B. It always compares the latest snapshot with the baseline snapshot for analysis. C. It runs after each AWR snapshot is created and it requires at least two snapshots for analysis. D. It requires at least four AWR snapshots for analysis. E. It calls other advisors if required, but does not provide recommendations about the advisors to be used.
Answer: A,C
Sample Question 52
Which two statements describe the relationship between a scheduler window, a resource manager plan, and a job class? (Choose two.)
A. A scheduler window together with a job class, controls resource allocation for a job using that job class in that scheduler window. B. A job class specifies a scheduler window that will be open when that job class becomes active. C. A scheduler window specifies a resource manager plan that will be activated when that scheduler window becomes active. D. A scheduler window specifies a job class that will be activated when that scheduler window becomes active. E. A scheduler window can control resource allocation by itself.
Answer: A,C
Sample Question 53
The HR schema exists in two databases, BOSTON and DENVER, and has the same password, HR.You have the CREATE DATABASE LINK and CREATE SESSION privileges on both the database.BOSTON is defined as a service name in the tnsnames.ora of both the databases.You plan to use the command: CREATE DATABASE LINK hr_link CONNECT to hr IDENTIFIED BY hr USING 'denver'; What must be done to ensure only the HR user in the BOSTON database can access the HR schema in the DENVER database?
A. Execute this command as HR user in the BOSTON database and SYS user in the DENVER database. B. Execute this command as SYS user in both the databases. C. Execute this command as HR user in the DENVER database. D. Execute this command as HR user in the BOSTON database.
Answer: D
Sample Question 54
Which two tools can be used to configure static service information in the listener.ora file? (Choose two.)
A. Oracle Net Manager B. Oracle Enterprise Manager Cloud Control C. Oracle Net Configuration Assistant D. Listener Control Utility (LSNRCTL) E. Oracle Enterprise Manager Database Express
Answer: A,B
Sample Question 55
Tape streaming is not happening while performing RMAN tape backup. On investigation, you find that it is not because of the incremental backup or the empty file backup and that RMAN is sending data blocks to tape drive fast enough. What could be a solution to make streaming happen during the backup?
A. Configure backup optimization B. Configure the channel to increase MAXOPENFILES C. Configure the channel to increase the capacity with the RATE parameter D. Configure the channel to adjust the tape buffer size with the BLKSIZE option
Answer: D
Sample Question 56
Which two utilities can NOT configure a new listener on port 1526? (Choose two.)
You want to create a file watcher and an event-based job for detecting the arrival of files on the local server from various locations. To achieve this, you enable the raising of file arrival events from remote systems. Which two conditions must be satisfied to receive file arrival events from a remote system? (Choose two.)
A. The remote system must have a running Oracle Database instance and a scheduler agent installed. B. The initialization parameter REMOTE_OS_AUTHENT must be set to TRUE on your database. C. The local database must be set up to run remote external jobs. D. The remote system's scheduler agent must be registered with your database. E. Database links to remote databases must be created.
Your database is in ARCHIVELOG mode and you want to automate the backup scheduling for your database. Which two tools or utilities would you use to achieve this? (Choose two.)
A. Oracle Enterprise Manager Database Express (EM Express) B. Oracle Enterprise Manager Cloud Control C. Database Configuration Assistant (DBCA) D. Recovery Manager (RMAN) script invoked by using scheduler
Answer: B,D
Sample Question 59
Which three statements are true about checkpointing? (Choose three.)
A. It prompts the Checkpoint (CKPT) process to write data to the data files and redo information to the online redo log files. B. It ensures that all dirty buffers are written to data files during consistent shutdown. C. It reduces the time required for recovery in case of an instance failure. D. Frequent thread checkpoints can degrade database performance. E. It prompts the Database Writer (DBWn) process to write checkpoint information into data file headers and the control file
Answer: B,C,D
Sample Question 60
Which two statements are true about availability audit features after migration to unified auditing? (Choose two.)
A. The ability of users to audit their own schema objects is not available in the postmigrated database. B. Operating system audit trail is available in the post-migrated database. C. Network auditing is available in the post-migrated database. D. Mandatory auditing of audit administrative actions is available in the post-migrated database.
