[Mar 18, 2023] 1z0-062 PDF Dumps is essential on your 1z0-062 Exam Questions Certain Success!
1z0-062 PDF Questions - Perfect Prospect To Go With 1z0-062 Practice Exam
The Oracle 1Z0-062 is one of the two certification exams that you need to pass in order to get the Oracle Database 12c Administrator Certified Associate certificate. The second test is 1Z0-071. The target audience for this exam is those individuals who want to prove their skills in fundamental database terminologies and concepts to guide vital functions for businesses, processes, and systems.
NEW QUESTION 28
Which three statements are true about Automatic Workload Repository (AWR)? (Choose three.)
- A. All AWR tables belong to the SYSTEM schema.
- B. The manageability monitor (MMON) process gathers statistics and creates an AWR snapshot that is used by the self-tuning components in a database.
- C. AWR data is stored in memory and in a database.
- D. 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.
- E. An AWR snapshot contains system-wide tracing and logging information.
Answer: B,C,D
NEW QUESTION 29
You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index.
Which two are possible if table updates are performed which affect the invisible index columns?
- A. The index automatically becomes visible inorder to have it updated by DML on the table.
- B. The index remains invisible.
- C. The index is updated by the DML on the table.
- D. The index becomes unusable but the table is updated by the DML.
- E. The index is not updated by the DML statements on the indexed table.
Answer: B,C
Explanation:
Unlike unusable indexes, an invisible index is maintained during DML statements.
Note:
* Oracle 11g allows indexes to be marked as invisible. Invisible indexes are maintained like any other index, but they are ignored by the optimizer unless the
OPTIMIZER_USE_INVISIBLE_INDEXES parameter is set to TRUE at the instance orsession level. Indexes can be created as invisible by using the INVISIBLE keyword, and their visibility can be toggled using the ALTER INDEX command.
NEW QUESTION 30
SMD is a smallfile locally managed tablespace with manual segment space management.
The SH user receives the following error while inserting data into the salestable:
Which three actions can be taken to enable the user to insert data? (Choose three.)
- A. adding a data file to the SMD tablespace, provided the tablespace has not reached its maximum
number of file - B. changing segment space management for the SMD tablespace to automatic
- C. resizing the data file associated with the SMD tablespace to make it larger, provided all data files have
not yet reached their maximum size - D. increasing the space quota on the SMD tablespace for the SH user, provided the files have not yet
reached their maximum size - E. altering the data file associated with the SMD tablespace to grow automatically
Answer: A,C,E
NEW QUESTION 31
In your database, USERSis the default permanent tablespace.
Examine the commands and their outcome:
You plan to execute the commands:
Which two statements are true?
- A. The MYTABtable is owned by the SYSuser.
- B. The MYTAB table is created in the USERStablespace but no rows can be inserted into the table by USER02.
- C. The MYTABtable is created in the SYSTEMtablespace but no rows can be inserted into the table by USER02.
- D. The MYTABtable is created in the SYSTEMtablespace and rows can be inserted into the table by USER02.
- E. The CREATE TABLE statement generates an error because the SYSDBAprivilege does not provide any space quota on the SYSTEMtablespace by default.
Answer: A,D
NEW QUESTION 32
Examine the parameter for your database instance:
You generated the execution plan for the following query in the plan table and noticed that the nested loop
join was done. After actual execution of the query, you notice that the hash join was done in the execution
plan:
Identify the reason why the optimizer chose different execution plans.
- A. The optimizer chose different plan because extended statistics were created for the columns used.
- B. The optimizer used re-optimization cardinality feedback for the query.
- C. The optimizer used a dynamic plan for the query.
- D. The optimizer chose different plans because automatic dynamic sampling was enabled.
Answer: C
NEW QUESTION 33
Which three are direct benefits of the multiprocess, multithreaded architecture of Oracle Database 12c when it is enabled?
- A. Reduced virtual memory utilization
- B. Improved Serial Execution performance
- C. Improved parallel Execution performance
- D. Reduced physical I/O
- E. Reduced CPU utilization
- F. Reduced logical I/O
Answer: A,C,E
Explanation:
* Multiprocess and Multithreaded Oracle Database Systems
Multiprocess Oracle Database (also called multiuser Oracle Database) uses several processes to run different parts of the Oracle Database code and additional Oracle processes for the users-either one process for each connected user or one or more processes shared by multiple users. Most databases are multiuser because a primary advantage of a database is managing data needed by multiple users simultaneously.
Each process in a database instance performs a specific job. By dividing the work of the database and applications into several processes, multiple users and applications can connect to an instance simultaneously while the system gives good performance.
* In previous releases, Oracle processes did not run as threads on UNIX and Linux systems. Starting in Oracle Database 12c, the multithreaded Oracle Database model enables Oracle processes to execute as operating system threads in separate address spaces.
NEW QUESTION 34
You are required to migrate your 11.2.0.3 database as a pluggable database (PDB) to a multitenant container database (CDB).
The following are the possible steps to accomplish this task:
1 . Place all the user-defined tablespace in read-only mode on the source database.
2 . Upgrade the source database to a 12c version.
3 . Create a new PDB in the target container database.
4 . Perform a full transportable export on the source database with the VERSION parameter set to 12 using the expdp utility.
5. Copy the associated data files and export the dump file to the desired location in the target database.
6. Invoke the Data Pump import utility on the new PDB database as a user with the DATAPUMP_IMP_FULL_DATABASE role and specify the full transportable import options.
7. Synchronize the PDB on the target container database by using the
DBMS_PDS.SYNC_ODB function.
Identify the correct order of the required steps.
- A. 1, 4, 3, 5, 6, 7
- B. 2, 1, 3, 4, 5, 6
- C. 1, 5, 6, 4, 3, 2
- D. 2, 1, 3, 4, 5, 6, 7
- E. 1, 3, 4, 5, 6, 7
Answer: A
Explanation:
1. Set user tablespaces in the source database to READ ONLY.
2. From the Oracle Database 11g Release 2 {11.2.0.3) environment, export the metadata and any data residing in administrative tablespaces from the source database using the FULL=Y and TRANSPORTABLE=ALWAYS parameters. Note that the VER$ION=12 parameter is required only when exporting from an Oracle Database llg Release 2 database:
3 . Copy the tablespace data files from the source system to the destination system. Note that the log file from the export operation will list the data files required to be moved.
4 . Create a COB on the destination system, including a PDB into which you will import the source database.
5 . In the Oracle Database 12c environment, connect to the pre-created PDB and import the dump file. The act of importing the dump file will plug the tablespace data files into the destination PDB Oracle White Paper - Upgrading to Oracle Database 12c -August 2013
NEW QUESTION 35
You created a new database using the "create database" statement without specifying the "ENABLE PLUGGABLE"
clause.
What are two effects of not using the "ENABLE PLUGGABLE database" clause?
- A. The database is created as a non-CDB but can be plugged into an existing CDB.
- B. The database is created as a non-CDB but will become a CDB whenever the first PDB is plugged in.
- C. The database is treated as a PDB and must be plugged into an existing multitenant container database (CDB).
- D. The database is created as a non-CDB and can never contain a PDB.
- E. The database is created as a non-CDB and can never be plugged into a CDB.
Answer: A,D
Explanation:
A (not B,not E): The CREATE DATABASE ... ENABLE PLUGGABLE DATABASE SQL statement creates a new CDB. If you do
not specify the ENABLE PLUGGABLE DATABASE clause, then the newly created database is a non-CDB and can never
contain PDBs.
D: You can create a PDB by plugging in a Non-CDB as a PDB.
The following graphic depicts the options for creating a PDB:
Incorrect:
Not E: For the duration of its existence, a database is either a CDB or a non-CDB. You cannot transform a non-CDB into
a CDB or vice versa. You must define a database as a CDB at creation, and then create PDBs within this CDB.
NEW QUESTION 36
Which four are true about creating and running a remote database scheduler jobs? (Choose four.)
- A. A credential must be created to define the remote user
- B. A credential is optional for a remote database job
- C. It must run as a user that is defined on the remote database
- D. A database destination must exist or be created for the remote database
- E. A destination is optional for a remote database job because DB links can be used instead
- F. A database destination group must exist or be created for a job to run on multiple remote databases
- G. Remote database jobs always run as the same user who submits the job on the local database
Answer: B,C,D,F
NEW QUESTION 37
You notice a performance change in your production Oracle database and you want to know which change
has made this performance difference.
You generate the Compare Period Automatic Database Diagnostic Monitor (ADDM) report to further
investigation.
Which three findings would you get from the report? (Choose three.)
- A. It gives information about statistics collection in both time periods.
- B. It shows the difference in the size of memory pools in both time periods.
- C. It identifies any workload change that caused a performance difference in both time periods.
- D. It detects the top wait events causing performance degradation.
- E. It shows the resource usage for CPU, memory, and I/O in both time periods.
- F. It detects any configuration change that caused a performance difference in both time periods.
Answer: C,E,F
Explanation:
Explanation/Reference:
Explanation:
Keyword: shows the difference.
* Full ADDM analysis across two AWR snapshot periods
Detects causes, measure effects, then correlates them
Causes: workload changes, configuration changes
Effects: regressed SQL, reach resource limits (CPU, I/O, memory, interconnect)
Makes actionable recommendations along with quantified impact
* Identify what changed
/Configuration changes, workload changes
* Performance degradation of the database occurs when your database was performing optimally in the
past, such as 6 months ago, but has gradually degraded to a point where it becomes noticeable to the
users. The Automatic Workload Repository (AWR) Compare Periods report enables you to compare
database performance between two periods of time.
While an AWR report shows AWR data between two snapshots (or two points in time), the AWR Compare
Periods report shows the difference (ABE) between two periods (or two AWR reports with a total of four
snapshots). Using the AWR Compare Periods report helps you to identify detailed performance attributes
and configuration settings that differ between two time periods.
NEW QUESTION 38
You execute the following piece of code with appropriate privileges:
User SCOTT has been granted the CREATE SESSION privilege and the MGR role.
Which two statements are true when a session logged in as SCOTT queries the SAL column in the view and the table?
- A. Data is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.
- B. Data is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role set.
- C. Data is redacted for EMP.SAL column only if the SCOTT session has the MGR role set.
- D. Data is redacted for the EMP.SAL column only if the SCOTT session does not have the MGR role set.
- E. Data is never redacted for the EMP_V.SAL column.
Answer: D,E
Explanation:
Note:
* DBMS_REDACT.FULL completely redacts the column data.
* DBMS_REDACT.NONE applies no redaction on the column data. Use this function for development testing purposes.
LOB columns are not supported.
* The DBMS_REDACT package provides an interface to Oracle Data Redaction, which enables you to mask (redact)
data that is returned from queries issued by low-privileged users or an application.
* If you create a view chain (that is, a view based on another view), then the Data Redaction policy also applies
throughout this view chain. The policies remain in effect all of the way up through this view chain, but if another
policy is created for one of these views, then for the columns affected in the subsequent views, this new policy takes
precedence.
NEW QUESTION 39
Which four operations performed after the Oracle Restart installation are automatically added to the Oracle Restart
configuration?
- A. database created by using a SQL statement
- B. database service created by modifying the SERVICE_NAMES initialization parameter
- C. ASM instance created by using ASMCA
- D. database created by using DBCA
- E. listener configured by using NETCA
- F. database service created by using DBMS_SERVICE.CREATE_SERVICE
- G. database service created by using SRVCTL
Answer: A,D,E,G
NEW QUESTION 40
Examine this command:
SQL > exec DBMS_STATS.SET_TABLE_PREFS ('SH', 'CUSTOMERS', 'PUBLISH', 'false');
Which three statements are true about the effect of this command?
- A. Statistics collection is not done for the CUSTOMERS table when database stats are gathered.
- B. Statistics gathered on the CUSTOMERS table when schema stats are gathered are stored as pending statistics.
- C. Statistics collection is not done for the CUSTOMERS table when schema stats are gathered.
- D. Any existing statistics for the CUSTOMERS table are still available to the optimizer at parse time.
- E. Statistics gathered on the CUSTOMERS table when database stats are gathered are stored as pending statistics.
Answer: B,D,E
Explanation:
* SET_TABLE_PREFS Procedure
This procedure is used to set the statistics preferences of the specified table in the specified schema.
* Example:
Using Pending Statistics
Assume many modifications have been made to the employees table since the last time statistics were gathered. To
ensure that the cost-based optimizer is still picking the best plan, statistics should be gathered once again; however,
the user is concerned that new statistics will cause the optimizer to choose bad plans when the current ones are
acceptable. The user can do the following:
EXEC DBMS_STATS.SET_TABLE_PREFS('hr', 'employees', 'PUBLISH', 'false');
By setting the employees tables publish preference to FALSE, any statistics gather from now on will not be
automatically published. The newly gathered statistics will be marked as pending.
NEW QUESTION 41
All of your database instances use SPFILES.
You executed this command in one of them:
ALTER SYSTEM SET MEMORY_MAX_TARGET=1024M;
Which statement is true?
- A. The command returns an error.
- B. The parameter is modified in memory and in the parameter file.
- C. The parameter is modified in memory only.
- D. The parameter is modified in the parameter file only.
Answer: D
Explanation:
Reference: https://docs.oracle.com/database/121/ADMIN/memory.htm#ADMIN00207
NEW QUESTION 42
Examine the memory-related parameters set in the SPFILE of an Oracle database:
Which statement is true?
- A. Only SGA components are sizedautomatically.
- B. The value of the MEMORY_TARGET parameter cannot be changed dynamically.
- C. Memory is dynamically re-allocated between the SGA and PGA as needed.
- D. The size of the PGA cannot grow automatically beyond 500 MB.
Answer: D
NEW QUESTION 43
You must track all transactions that modify certain tables in the sales schema for at least three years.
Automatic undo management is enabled for the database with a retention of one day.
Which two must you do to track the transactions? (Choose two.)
- A. Enable supplemental logging for the database.
- B. Create a Flashback Data Archive in the tablespace where the tables are stored.
- C. Specify undo retention guarantee for the database.
- D. Create a Flashback Data Archive in any suitable tablespace.
- E. Enable Flashback Data Archiving for the tables that require tracking.
Answer: D,E
Explanation:
E: By default, flashback archiving is disabled for any table. You can enable flashback archiving for a table if you have the FLASHBACK ARCHIVE object privilege on the Flashback Data Archive that you want to use for that table.
D: Creating a Flashback Data Archive
/ Create a Flashback Data Archive with the CREATE FLASHBACK ARCHIVE statement, specifying the following:
Name of the Flashback Data Archive
Name of the first tablespace of the Flashback Data Archive
(Optional) Maximum amount of space that the Flashback Data Archive can use in the first tablespace
/ Create a Flashback Data Archive named fla2 that uses tablespace tbs2, whose data will be retained for two years:
CREATE FLASHBACK ARCHIVE fla2 TABLESPACE tbs2 RETENTION 2 YEAR;
NEW QUESTION 44
......
Those candidates who are used to referring themselves to self-study and have enough time & motivation in reserve can utilize such study guides and books from the Amazon website:
- ‘OCA Oracle Database 12c Installation and Administration Exam Guide (Exam 1Z0-062)’ by John Watson is an exclusive Oracle Press manual that covers all of the associate-level objectives to prepare for 1Z0-062. Its author, John Watson, as an OCP-level database administrator, will show readers how to install and upgrade Oracle Database software, how to manage Oracle instances alongside database storage structures, and how to implement Oracle Database auditing. Furthermore, upon completion of this book, you will demonstrate expertise in automating tasks, data movement, and installing Oracle Grid infrastructure for a standalone server. What is peculiar about this manual is that each chapter of this resource includes realistic exercises, two-minute drills for every topic, and self-check tests so you can observe the results of your work. This guide is available in Kindle and Paperback versions for anyone interested. However, it should be noted that the electronic version of the book provides access to more than 185 practice exam questions, as well as a test engine so that you will not only get a valuable source of information for quality preparation for your forthcoming 1Z0-062 exam, but also a handy reference for further use in the workplace.
- For those wishing to begin efficient preparation for 1Z0-062, you should take a look at ‘OCA: Oracle Database 12c Administrator Certified Associate Study Guide: Exams 1Z0-061 and 1Z0-062 1st Edition’ written by an industry expert with hands-on Oracle database experience, Biju Thomas. With an extensive set of study tools, including flashcards, summary questions for each chapter, assessment tests, as well as practical labs, you will not only have a comprehensive resource for preparation but will also discover the world of day-to-day work as a database administrator. As a result, you will have honed the skills required for certification, such as restricting and sorting data, creating an Oracle Database, administering user security, and more. You can find this guide on Amazon in both Kindle and paperback versions, and in exchange, you get a convenient preparation source, including real-world scenarios, hands-on exercises, and access to exam prep software.
As you can see, there are more than enough ways for comprehensive and productive revision. Thus, each candidate can choose the preparation tool that suits his or her learning style.
1z0-062 Exam with Accurate Oracle Database 12c: Installation and Administration PDF Questions: https://www.certkingdompdf.com/1z0-062-latest-certkingdom-dumps.html