2023年最新の1Z0-083プレミアム資料テストPDFの無料問題集お試しセット
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オラクル 1Z1-083 試験は、80問の多肢選択問題から構成され、受験者は105分間で試験を完了する必要があり、合格するためには63％以上のスコアを取得する必要があります。試験料は245米ドルであり、認定テストセンターまたはピアソンVUEテストプラットフォームを通じてオンラインで受験することができます。
Oracle 1Z1-083試験は、Oracleデータベース管理に関連する幅広いトピックをカバーする挑戦的で包括的な試験です。試験に合格することは、Oracleデータベース管理者としてのキャリアを進めたい個人にとって重要な達成です。
質問 # 108
Which three are located by using environment variables? (Choose three.)
- A. the maximum number of database files that can be opened by a database instance
- B. the location of Oracle Net Services configuration files
- C. the Optimal Flexible Architecture (OFA) compliant path to store Oracle software and configuration files.
- D. the list of a disk group names to be mounted by an Oracle Automatic Storage Management (ASM) instance at startup
- E. default directories for temporary files used by temporary tablespaces
- F. the temporary disk space used by Oracle Installer during installation
正解：B、C、F
質問 # 109
The users tablespace consists of data files 3 and 4 and must always be online in read/write mode. Which two are true about using RMAN to perform an open database back up of this tablespace?
- A. Backups must be done incrementally.
- B. Backups can be taken only if the database is in archivelog mode.
- C. Only consistent backups can be created.
- D. The database must be registered in an RMAN catalog.
- E. Backups must be contained in backup sets.
- F. Backups can be done incrementally.
正解：E、F
質問 # 110
Which three are true about the FLASHBACK DATABASE feature? (Choose three.)
- A. FLASHBACK DATABASE only uses FLASHBACK LOGS to get the database to the desired flashback time.
- B. It requires that the target database be in ARCHIVELOG mode.
- C. It always generates REDO and UNDO.
- D. Queries and DML have the same FLASHBACK LOG overhead when flashback is enabled for a database.
- E. FLASHBACK LOGS are archived after a log switch.
- F. A database can be flashed back using SQL*PLUS.
正解：B、D、F
質問 # 111
HR_ROOT is an application container with the HR_APP application installed. No application PDBs and no application seed have yet been created in HR_ROOT. An application PDB, PDB1, must be created so that the HR_APP application's common objects are accessible to it. Which two methods can be used?
- A. Create the PDB1 application PDB and synchronize it with PDB$SEED.
- B. Create the PDB1 application PDB and synchronize it with HR_ROOT.
- C. Create an application seed, and install HR_APP in it.
- D. Create the PDB1 application PDB and install HR_APP in it.
- E. Create an application seed, synchronize it with HR_ROOT, and then create the PDB1 application PDB.
正解：B、E
質問 # 112
Which two are direct benefits of the multiprocess, multithreaded architecture of Oracle Database 12c when it is enabled?
- A. Reduced physical I/O
- B. Reduced logical I/O
- C. Improved Serial Execution performance
- D. Reduced virtual memory utilization
- E. Reduced CPU utilization
正解：D、E
質問 # 113
Which three statements are true about the keystore storage framework for transparent data encryption?
- A. It facilitates and helps to enforce keystore backup requirements.
- B. It enables separation of duties between the database administrator and the security administrator.
- C. It transparently decrypts data for the database users and applications that access this data.
- D. It handles encrypted data without modifying applications.
- E. It helps to track encryption keys and implement requirements such as keystore password rotation and master encryption key reset or re-key operations.
- F. It enables a keystore to be stored only in a file on a file system.
正解：A、B、E
質問 # 114
Which three can be done using Oracle Database Configuration Assistant (DBCA) starting from Oracle Database 19c? (Choose three.)
- A. cloning a remote container database in silent mode
- B. relocating a remote container database in silent mode
- C. relocating a remote pluggable database in silent mode
- D. cloning a remote container database in interactive mode
- E. relocating a remote container database in interactive mode
- F. cloning a remote pluggable database in silent mode
- G. relocating a remote pluggable database in interactive mode
正解：A、C、F
質問 # 115
Which operating system group is NOT needed to perform an Oracle Database installation?
- A. OSOPER
- B. OSRACDBA
- C. OSDBA
- D. OSASM
- E. OSKMDBA
正解：B
質問 # 116
Which two are true about the character sets used in an Oracle database? (Choose two.)
- A. Unicode enables information from any language to be stored using a single character set.
- B. Single-byte character sets always use 8-bit encoding schemes.
- C. Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant (DBCA).
- D. Single-byte character sets provide better performance than multibyte character sets.
- E. Single-byte character sets always use 7-bit encoding schemes.
- F. Multibyte character sets allow more efficient space utilization than single byte character sets.
正解：A、D
解説：
Reference:
https://docs.oracle.com/database/121/NLSPG/ch2charset.htm#NLSPG166
質問 # 117
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)
- A. An existing Oracle base can be used.
- B. A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.
- C. Only the grid user can perform the upgrade.
- D. Existing Oracle Database instances must be shut down before starting the upgrade.
- E. The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid Infrastructure.
- F. The newer version is installed in a separate Oracle Grid Infrastructure home on the same server as the existing version.
正解：C、D、E
解説：
Reference:
https://docs.oracle.com/database/121/CWLIN/procstop.htm#CEGEDCDB
質問 # 118
Examine this output:
Which two are true? (Choose two.)
- A. PDB1 is always limited to 40% of the available system resources regardless of demand.
- B. Any PDB not specified in the plan will be unable to execute statements in parallel.
- C. PDB3 can use all available parallel execution processes at times.
- D. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
- E. Any PDB not specified in the plan will be able to use a maximum of 16.5% of the available system resources.
- F. PDB2 is guaranteed at least 25% of the available parallel execution processes if there is enough demand.
正解：B、D
質問 # 119
Which two are true about common objects? (Choose two.)
- A. They can be created only in an application root.
- B. They can exist in CDB$ROOT and an application root.
- C. They can exist in user-defined schemas only in application containers.
- D. They can be created only in CDB$ROOT.
- E. They can be only metadata-linked in an application container.
- F. They can be extended data-linked in CDB$ROOT.
正解：A、F
質問 # 120
Which two are true about the Oracle dataabsemethodology? (Choose two.)
- A. The database instance memory should always be tuned before tuning any file systems.
- B. The Oracle Database time model should be used to find the database and instance areas most in need of tuning.
- C. Tuning activities should stop once the user is satisfied with performance.
- D. SQL statements should always be tuned before tuning any file systems.
- E. Tuning activities should stop onceagreed service levels for performance have been met.
- F. The alert log should be used to find the database and instance areas most in need of tuning.
正解：E、F
質問 # 121
Which two are true about Rapid Home Provisioning (RHP), which has been available since Orcale 18c? (Choose two.)
- A. It cannot be used to upgrade Oracle Database homes.
- B. It can be used to provision applications.
- C. It can be used to patch Grid Infrastructure homes containing Oracle Restart.
- D. It is an Oracle Database service
- E. It can be used to provision middleware.
正解：B、E
質問 # 122
Which three are true about transporting databases across platforms using Recovery Manager (RMAN) image copies? (Choose three.)
- A. Data files can be converted on the destination system.
- B. The password file is automatically converted by RMAN.
- C. Databases can be transported between systems with different endian formats.
- D. By default, the transported database will use Oracle Managed Files (OMF)
- E. Data files can be converted on the source system.
- F. A new DBID is automatically created for the transported database.
正解：A、D、E
解説：
Explanation
A: If you do not provide a destination, then the DB_FILE_CREATE_DEST initialization parameter must be set in the target platform. RMAN restores the data files to the location specified by this parameter using new Oracle Managed File (OMF) names. BC: While creating the cross-platform backup to transport a database, you can convert the database either on the source database or the destination database. The benefit of performing the conversion on the destination database is that the processing overhead of the convert operation is offloaded from the source to the destination database.
質問 # 123
Examine this output: Which two are true? (Choose two.)
- A. PDB1 is always limited to 40% of the available system resources regardless of demand.
- B. PDB3 can use all available parallel execution processes at times.
- C. Any PDB not specified in the plan will be unable to execute statements in parallel.
- D. Any PDB notspecified in the plan will be able to use a maximum of 16.5% of the available system resources.
- E. PDB2 is guaranteed at least 25% of the available parallel execution processes if there is enough demand.
- F. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
正解：E
質問 # 124
Which three are true about requirements for various FLASHBACK operations? (Choose three.)
- A. FLASHBACK DATA ARCHIVE requires undo to store all versions of all rows of a table being tracked.
- B. FLASHBACK version query requires undo to retrieve all versions of a row that existed between two points in time.
- C. FLASHBACK drop requires that the RECYCLEBIN parameter be set to ON.
- D. FLASHBACK drop requires undo to retrieve all versions of a row that existed between two points in time.
- E. FLASHBACK transaction query requires undo to retrieve all versions of a row that existed between two points in time.
- F. FLASHBACK version query requires that the RECYCLEBIN parameter be set to ON.
正解：C、E、F
質問 # 125
Which four are true about a Recovery Manager (RMAN) duplication without a TARGET connection? (Choose four.)
- A. The NOREDO clause can be used if the backups of the database being duplicated were taken when the database was in ARCHIVELOG mode.
- B. The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance.
- C. RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance.
- D. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is opened.
- E. RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.
- F. RMAN SBT-based backups of the database to be duplicated can be used by the auxiliary instance.
- G. The NOREDO clause must be used if the backups of the database being duplicated were taken when the database was in NOARCHIVELOG mode.
- H. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed.
正解：B、D、E、G
解説：
Reference:
http://oradb-srv.wlv.ac.uk/ora12c/RCMRF/rcmsynta020.htm
質問 # 126
Choose two. Which two are true about backup set compression using RMAN default compression?
- A. Compressed backups cannot have a section size defined.
- B. Unused blocks below the high water mark are backed up.
- C. Compression can be done only for locally managed tablespaces.
- D. Compressed backups can be written only to media.
- E. Binary compression adds CPU overhead to backup operations.
正解：C、E
質問 # 127
While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager (RMAN) incremental level 0 backup is a bottleneck. FORCE LOGGING is enabled for the database. Which two could improve read performance? (Choose two.)
- A. Enable asynchronous disk I/O.
- B. Increase the level of RMAN multiplexing.
- C. Disable FORCE LOGGING for the database.
- D. Increase the size of the database buffer cache.
- E. Increase the size of tape I/O buffers.
正解：C、D
質問 # 128
Which three are true about managing memory components in an Oracle database instance? (Choose three.)
- A. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.
- B. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool size.
- C. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
- D. With Automatic Shared Memory Management, the database instance can increase the Program Global Area size by reducing the System Global Area size.
- E. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
- F. Automatically tuned and resized System Global Area components will always revert to their initial sizes after an instance restart.
正解：A、B、E
質問 # 129
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Oracle 1Z0-083 試験を受験するには、Oracle データベースアーキテクチャの強い理解と、SQL*Plus および Oracle Enterprise Manager のようなツールを使用してデータベースを管理できる能力が必要です。また、データベースインスタンス、表領域、データファイルの設定と管理の経験が必要です。さらに、バックアップおよびリカバリプロセスについての Oracle の理解を持ち、バックアップの実行、データの復元、およびバックアップスケジュールの管理を行える必要があります。
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