1Z0-083練習試験と学習ガイドは厳密検証された最新な283問題 [Q32-Q57]

1Z0-083練習試験と学習ガイドは厳密検証されたFast2test最新な283問題

2025年最新のな厳密検証された合格させる1Z0-083学習ガイドベズトお試しセット

Oracle 1Z0-083 認定試験は、Oracle データベースを管理・維持する責任を持つデータベース管理者のスキルと知識をテストするために設計されています。この試験は、Oracle データベース管理認定トラックの第2部であり、最初の試験 (1Z0-082) で得た知識とスキルを基盤として構築されています。

Oracle 1Z1-083試験は、Oracleデータベース管理でスキルと知識をテストする挑戦的で包括的な認定試験です。この試験に合格すると、多くのキャリアの機会を開き、潜在的な雇用主に専門知識を実証することができます。適切な準備と学習へのコミットメントにより、この試験に合格し、キャリアを次のレベルに引き上げることができます。

 

質問 # 32
Examine these actions:
1.Create a new database for a recovery catalog.
2.Create a tablespace with sufficient space in the catalog database for the recovery catalog.
3.Configure ARCHIVELOG mode for the catalog database.
4.Create a user to own the recovery catalog schema with quota on the tablespace that will contain the catalog.
5.Grant the RECOVERY_CATALOG_OWNER role to the recovery catalog schema owner.
6.Grant the SYSBACKUP privilege to the recovery catalog schema owner.
Which are the minimum actions that must be performed before executing the CREATE CATALOG command?

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

正解：A

質問 # 33
Choose the best answer. Examine this configuration: 1. CDB1 is a container database. 2. APP_ROOT is an application root in CDB1. 3. APP_PDB1 is an application PDB in APP_ROOT. 4. FLASHBACK DATABASE is ON. You execute these commands: $ sqlplus sys/orac1e_4U@localhost:1521/cdb1 SQL> SELECT current_scn FROM v$database; CURRENT_SCN -----------------------2074756 SQL> CREATE TABLE cdb1_tab(c1 NUMBER) ; Table created. SQL> ALTER SESSION SET CONTAINER=app_root; Session altered. SQL> CREATE TABLE app_root_tab (c1 NUMBER) ; Table created. SQL> ALTER SESSION SET CONTAINER=app_pdb1; Session altered. SQL> CREATE TABLE app_pdb1_tab (c1 NUMBER) ; Table created. SQL> conn / as sysdba Connected. SQL> ALTER PLUGGABLE DATABASE app_root CLOSE; Pluggable database altered. SQL> FLASHBACK PLUGGABLE DATABASE app_root TO SCN 2074756; Flashback complete. Which table or set of tables will exist after the Flashback operation has completed?

• A. CDB1_TAB and APP_PDB1_TAB
• B. CDB1_TAB only
• C. CDB1_TAB and APP_ROOT_TAB
• D. none of the tables, because all three tables will be dropped
• E. CDB1_TAB, APP_ROOT_TAB, and APP_PDB1_TAB

正解：A

質問 # 34
Which three are true about the Oracle Optimizer? (Choose three.)

• A. It obeys all hints.
• B. It considers object statistics when generating execution plans for SQL statements.
• C. It can only use SQL Plan Directives tied to the SQL statement for which a plan is being generated.
• D. It can re-optimize execution plans after previous executions detect suboptimal plans.
• E. It considers the filters in WHERE clauses when generating execution plans for SQL statements.
• F. It updates stale object statistics in the Data Dictionary.

正解：B、C、F

質問 # 35
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
-------------------------
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
------------------------
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. Flush the shared pool.
• B. Re-connect the sessions that access objects with redaction policies defined on them.
• C. Re-enable redaction policies that use FULL data redaction.
• D. Restart the database instance.
• E. Re-create redaction policies that use FULL data redaction.

正解：D

解説：
About Altering the Default Full Data Redaction Value
You can alter the default displayed values for full Data Redaction polices. By default, 0 is the redacted value when Oracle Database performs full redaction (DBMS_REDACT.FULL) on a column of the NUMBER data type. If you want to change it to another value (for example, 7), then you can run the DBMS_REDACT.UPDATE_FULL_REDACTION_VALUES procedure to modify this value.
The modification applies to all of the Data Redaction policies in the current database instance.
After you modify a value, you must restart the database for it to take effect.

質問 # 36
Which two are direct benefits of the multiprocess, multithreaded architecture of Oracle Database
12c when it is enabled?

• A. Reduced physical I/O
• B. Improved Serial Execution performance
• C. Reduced logical I/O
• D. Reduced virtual memory utilization
• E. Reduced CPU utilization

正解：D、E

質問 # 37
Which two are true about the execution of operating system scripts starting from Oracle Database 19c?
(Choose two.)

• A. The sudo password can be specified in a response file.
• B. root.sh can be executed automatically by the Database Installer only if it is provided with root credentials.
• C. orainstRoot.sh can be executed automatically by the Database installer by using sudo or root credentials.
• D. The root password cannot be specified in a response file.
• E. root.sh can be executed automatically by the Database installer only by using sudo credentials.
• F. The sudo password must be specified in a response file.

正解：C、D

質問 # 38
Which two are true about Oracle Optimizer Statistics, their use, and their collection?

• A. Statistics collected using DBMS_ATATS always yield the best optimizer result.
• B. The number of table rows is considered when evaluating the cost of accessing a table using an index.
• C. The Statistics Advisor generates actions for all recommendations.
• D. The Statistics Advisor can help recommend the best way to gather statistics.
• E. Index balanced B*Tree height is considered when evaluating the cost of using an index,

正解：B、C

質問 # 39
Which two are true about OS groups and users for Oracle Grid Infrastructure and the Oracle Relational Database Management System (RDBMS)? (Choose two.)

• A. By default, members of the OSASM group can access Automatic Storage Management and RDBMS instances.
• B. The primary group for the Oracle Grid Infrastructure and Oracle Database owners must be the Oracle Inventory group.
• C. The Oracle Grid Infrastructure owner owns Oracle Restart and Oracle Automatic Storage Management binaries.
• D. The same OSDBA group must be used for Automatic Storage Management and the Oracle Database.
• E. The Oracle Grid Infrastructure owner must have OSOPER, OSBACKUPDBA, and OSKMDBA as secondary groups.
• F. The Oracle Grid Infrastructure installation must be owned by the grid user.

正解：D、E

解説：
Explanation/Reference: https://docs.oracle.com/database/121/CWWIN/usrgrps.htm#CWWIN-GUID-6FD3C6AE-5A99-
4C6D-85D6-868CBA6F5DAE

質問 # 40
Examine these queries and their output: An online RMAN backup of the CDB was taken an hour before Restore Point R1 was created. You want to recover PDB1 to Restore Point R1. How do you achieve this?

• A. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1by using RMAN while connected to PDB1.
• B. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1by using SQL while connected to PDB1.
• C. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1by using RMAN while connected to CDB$ROOT.
• D. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1by using SQL while connected to CDB$ROOT.
• E. This cannot be done due to the lack of a clean restore point.

正解：E

質問 # 41
Which three are true about Database Point-in-Time Recovery? (Choose three.)

• A. The target point for the recovery must be specified as a stime or System Change Number (SCN).
• B. Database Point-in-Time Recovery is performed by the Managed Recovery Process (MRP)
• C. The Database must be in ARCHIVELOG mode.
• D. The database must be in MOUNT state when performing Database Point-in-Time Recovery.
• E. The database must be open RESETLOGS after Database Point-in-Time Recovery.
• F. The database must have FLASHBACK DATABASE ON to perform Database Point-in-Time Recovery.

正解：B、E、F

質問 # 42
Which three are true about an application container?

• A. It must have an application root PDB.
• B. It can contain multiple applications.
• C. It can contain a single application.
• D. Two application containers can share an application seed PDB.
• E. It must have an application seed PDB.
• F. An application PDB can belong to multiple application containers.

正解：B、C、D

質問 # 43
A database is configured in archivelog mode.
A full RMAN backup exists but no control file backup to trace has been taken.
A media failure has occurred.
In which two scenarios is incomplete recovery required?

• A. after losing all members of an inactive online redo log group
• B. after losing all copies of the control file
• C. after losing all members of the current online redo log group
• D. after losing a sysaux tablespace data file
• E. after losing an undo tablespace that is in use

正解：B、D

質問 # 44
Which two are true about backup set compression using RMAN default compression? (Choose two.)

• A. Binary compression adds CPU overhead to backup operations.
• B. Compression can be done only for locally managed tablespaces.
• C. Unused blocks below the high water mark are backed up.
• D. Compressed backups cannot have a section size defined.
• E. Compressed backups can be written only to media.

正解：A、B

解説：
Backup as compressed backupset device type disk database section size 100m; (not A, not D).
If they speak about Unused block compression then :
RMAN skips reading, and backing up, any database blocks that are not currently allocated to some database object. This is regardless of whether those blocks had previously been allocated (bellow HWM). (Not C) Data file has to be locally managed. (E)

質問 # 45
Which two are true about RMAN encryption?

• A. RMAN can encrypt the Oracle Database password file.
• B. Dual-mode encrypted backups can be restored only if both the password and the keystore used for encryption are available.
• C. The set encryption command overrides encryption settings specified by the configure encryption command.
• D. RMAN encryption keys are stored in a database keystore.
• E. Password encryption can be persistently configured using the configure encryption command.

正解：C、D

質問 # 46
Which two are true about data movement between a non-CDB and a PDB using Data Pump?
(Choose two.)

• A. A new PDB is automatically created when importing a non-CDB into a CDB.
• B. Moving data from a PDB to a non-CDB is only possible by using transportable tablespace export and import.
• C. Oracle attempts to convert common users to conventional users when moving schemas from a PDB to a non-CDB.
• D. Oracle attempts to convert conventional database users to local users when moving schemas from a non-CDB to a PDB.
• E. Tablespaces are automatically created as neeed while importing full exports in either a non-CDB or a PDB.
• F. Moving data from a non-CDB to a PDB is only possible by using conventional export and import.

正解：C、D

解説：
E,F -> Incorrect -> tablespace export/import can be conventional or transportable A,C -> Nothing is created automatically you must create what you need.

質問 # 47
Choose the best answer. Examine this configuration: 1. CDB1 is an Oracle container database from an older release. 2. PDB1, PDB2, PDB3, and PDB4 are pluggable databases in CDB1. A priority list UpgrdList has these entries: 1, pdb2 2, pdb1, pdb3 You execute this command: $ /u01/app/oracle/product/18.1.0/ db_1/rdbms/admin/dbupgrade -L UpgrdList In which order will the upgrade occur?

• A. CDB$ROOT, PDB$SEED, PDB1, PDB3, PDB2, and PDB4
• B. CDB$ROOT, PDB$SEED, PDB2, PDB1, and PDB3
• C. CDB$ROOT, PDB2, PDB1, and PDB3
• D. CDB$ROOT, PDB1, PDB2, PDB3, and PDB4
• E. CDB$ROOT, PDB$SEED, PDB2, PDB1, PDB3, and PDB4

正解：E

質問 # 48
Which two are true about backup set compression using RMAN default compression? (Choose two.)

• A. Binary compression adds CPU overhead to backup operations.
• B. Compressed backups cannot have a section size defined.
• C. Unused blocks below the high water mark are backed up.
• D. Compression can be done only for locally managed tablespaces.
• E. Compressed backups can be written only to media.

正解：A、C

質問 # 49
A container database called CDB1 is OMF-enabled.
PDB_FILE_NAME_CONVERT is not configured in CDB1. PDB1 was unplugged from CDB1 earlier in the week. Examine this command, which will be executed in CDB1:
CREATE PLUGGABLE DATABASE pdb1
USING '/u01/app/oracle/oradata/pdb1.xml'
SOURCE_FILE_NAME_CONVERT =
('/u01/app/oracle/oradata/', '/u02/app/oracle/oradata/');
Which two are true? (Choose two.)

• A. PDB1 data files already exist in the correct location.
• B. PDB1 must be dropped from CDB1.
• C. PDB_FILE_NAME_CONVERT must be set before executing the command.
• D. /u01/app/oracle/oradata/pdb1.xml does not contain the current locations of data files for PDB1.
• E. DBMS_PDB.CHECK_PLUG_COMPATIBILITY must be run in CDB1 before executing the command.

正解：C、D

質問 # 50
Which two are true about poorly performing SQL statements and their tuning in Oracle database instances? (Choose two.)

• A. SQL statements doing joins always do more physical I/O than single table queries.
• B. Poorly performing SQL statements can be tuned automatically by the Oracle server.
• C. The solution that best optimizes one SQL statement can degrade the performance of others.
• D. SQL statements performing many physical I/Os can always have their performance improved by creating indexes.
• E. SQL statements doing only logical reads never require tuning because they do no physical I/O.

正解：B、C

解説：
https://docs.oracle.com/cd/B28359_01/server.111/b28274/sql_tune.htm#PFGRF028

質問 # 51
Choose the best answer. Which operating system group is NOT needed to perform an Oracle Database installation?

• A. OSKMDBA
• B. OSRACDBA
• C. OSDBA
• D. OSOPER
• E. OSASM

正解：B

質問 # 52
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)

• A. A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.
• B. The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid Infrastructure.
• C. The newer version is installed in a separate Oracle Grid Infrastructure home on the same server as the existing version.
• D. Only the grid user can perform the upgrade.
• E. An existing Oracle base can be used.
• F. Existing Oracle Database instances must be shut down before starting the upgrade.

正解：C、E、F

質問 # 53
Which three are true about Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the Manageability Monitor (MMON) background process? (Choose three.)

• A. By default, AWR snapshots are automatically purged after eight days.
• B. By default, MMON creates an AWR snapshot every 30 minutes.
• C. ADDM performs its analysis only when a DBA requests it.
• D. AWR snapshots must be deleted when no longer required by ADDM.
• E. ADDM can recommend extending the buffer cache.
• F. ADDM can recommend shrinking the buffer cache.

正解：A、E、F

質問 # 54
Choose two. Which two are true about an RPM-based Oracle Database installation?

• A. It uses a service configuration script to create a single-instance database as part of the installation.
• B. It requires an Unbreakable Linux Network (ULN) subscription.
• C. It includes the Oracle Preinstallation RPM.
• D. From Oracle Database 18c, a single RPM can be used to install only Oracle Database Server for a single instance.
• E. It performs a software-only Oracle Database installation.

正解：D、E

質問 # 55
You plan to perform cross-platform PDB transport using XTTS. Which two are true?

• A. The source PDB must be in MOUNT state.
• B. Automatic conversion of endianess occurs.
• C. The source PDB must not be an application root.
• D. The source PDB can be in MOUNT or OPEN state.
• E. The source and target platforms must have the same endianess.
• F. A backup of the PDB must exist, taken using the BACKUP command with the To PLATFORM clause.

正解：D、E

質問 # 56
Which three are true about Automatic Workload Repository (AWR) snapshots? (Choose three.)

• A. They are always created automatically.
• B. They can be retained forever.
• C. They are generated if STATISTICS_LEVEL is set to ALL.
• D. They are always created manually.
• E. They are generated if STATISTICS_LEVEL is set to BASIC.
• F. They are generated if STATISTICS_LEVEL is set to TYPICAL.

正解：B、C、F

解説：
A - TRUE. Only STATISTICS_LEVEL=BASIC stops them being generated
B - TRUE. Only STATISTICS_LEVEL=BASIC stops them being generated
C - FALSE. You can create them manually.
D - FALSE. The DB will, by default, create them automatically every hour E - TRUE. You can setup AWR Warehouse, allowing these reports to be kept, and queried, forever.
F - FALSE. STATISTICS_LEVEL=BASIC stops them being generated
Ref: https://docs.oracle.com/en/database/oracle/oracle-
database/19/refrn/STATISTICS_LEVEL.html

質問 # 57
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