Pass Exam With Full Sureness - 1Z0-083 Dumps with 285 Questions [Q170-Q190]

Pass Exam With Full Sureness - 1Z0-083 Dumps with 285 Questions

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Oracle 1Z1-083 exam consists of 60 multiple-choice questions that need to be answered in 105 minutes. 1Z0-083 exam covers various topics related to database administration, such as configuring for recovery, managing the database and resources, monitoring and tuning performance, implementing security measures, and managing storage. 1Z0-083 exam is designed to test not only your theoretical knowledge but also your practical experience in managing Oracle databases.

NEW QUESTION # 170
A user complains about poor database performance. You want to verify if the user's session has waited for certain types of I/O activity. Which view displays all waits waited on by a session at least once?

• A. V$SESSION
• B. V$SESSION_WAIT_CLASS
• C. V$SESSION_WAIT
• D. V$SESSTAT
• E. V$SESSION_EVENT

Answer: E

NEW QUESTION # 171
What is the effect of specifying the "ENABLE PLUGGABLE DATABASE" clause in a "CREATE DATABASE" statement?

• A. ItwillcreateaCDBwithrootopenedandseedreadonly.
• B. It will create a CDB that must be plugged into an existing CDB.
• C. It will create a multitenant container database (CDB) with only the root opened.
• D. It will create a CDB with root and seed opened and one PDB mounted.
• E. ItwillcreateaCDBwithrootopenedandseedmounted.

Answer: A

NEW QUESTION # 172
Which three actions are performed by Database Upgrade Assistant (DBUA)? (Choose three.)

• A. It increases tablespace size, if required, to meet upgrade requirements.
• B. It performs prerequisite checks to verify if the Oracle database is ready for upgrade.
• C. It recompiles all stored PL/SQL code by using utlrp.sql.
• D. It empties the RECYCLE BIN.
• E. It removes the AUDSYS schema and the AUDIT_ADMIN and AUDIT_VIEWER roles
• F. It sets all user tablespaces to "read-only" before starting the upgrade.

Answer: A,B,D

Explanation:
Reference:
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/upgrd/upgrading-oracle-database-upgrade-assistant-dbua.html#GUID-307DACD9-ECEE-4079-B767-B22620B99900
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/upgrd/upgrading-oracle-database-upgrade-assistant-dbua.html#GUID-8BDDF859-1638-45AC-824D-78FC8154847C

NEW QUESTION # 173
Which three are true about Automatic Workload Repository (AWR)?

• A. Its collection level is determined by the value of the statistics_level database parameter.
• B. The taking of AWR snapshots can be disabled.
• C. By default, AWR snapshots are taken every 60 minutes.
• D. By default, AWR snapshots are retained for 7 days.
• E. AWR data is stored in the system tablespace.

Answer: A,B,C

NEW QUESTION # 174
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)

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

Answer: B,C,D

NEW QUESTION # 175
Examine this output:

Which two are true?

• A. Any PDB not specified in the plan will be unable to execute statements in parallel.
• B. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
• C. PDB3 can use all available parallel execution processes at times.
• D. Any PDB not specified in the plan will be able to use a maximum of 16.5% of the available system resources.
• E. PDB1 is always limited to 40% of the available system resources regardless of demand.
• F. PDB2 is guaranteed at least 25% of the available parallel execution processes if there is enough demand.

Answer: A,F

NEW QUESTION # 176
Which four are true about a Recovery Manager (RMAN) duplication without a TARGET connection? (Choose four.)

• A. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed.
• B. RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance.
• C. The NOREDO clause can be used if the backups of the database being duplicated were taken when the database was in ARCHIVELOG mode.
• D. RMAN SBT-based backups of the database to be duplicated can be used by the auxiliary instance.
• E. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is opened.
• F. RMAN disk-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 TARGET instance.

Answer: C,D,F,G

NEW QUESTION # 177
Examine this output:

Which two are true?

• A. Any PDB not specified in the plan will be unable to execute statements in parallel.
• B. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
• C. PDB3 can use all available parallel execution processes at times.
• D. PDB2 is guaranteed at least 25% of the available parallel execution processes 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. PDB1 is always limited to 40% of the available system resources regardless of demand.

Answer: A

NEW QUESTION # 178
Which three are true about using Database Resource Manager in an Oracle multitenant environment?

• A. A CDB-level resource plan is mandatory when using PDB-level resource plans.
• B. A CDB-level resource plan can limit PDB UNDO use.
• C. A CDB-level resource plan can limit session CPU utilization.
• D. A CDB-level resource plan can limit PDB CPU utilization
• E. A PDB-level resource plan can limit session PGA memory.
• F. PDB-level resource plans can limit uncommitted UNDO per consumer group.

Answer: C,D,E

NEW QUESTION # 179
You accidentally drop the CUSTOMERS table, and then recover it by using the FLASHBACK TABLE command. Which two statements are true about the dependent objects of the CUSTOMERS table?

• A. LOB segments associated with the CUSTOMERS table are flashed back.
• B. All the constraints defined on the table, except the referential integrity constraints, are flashed back.
• C. Only the primary key constraint created for the table is flashed back, whereas all other indexes must be retrieved separately.
• D. All the triggers associated with the table are flashed back but are disabled.
• E. Materialized views that use the CUSTOMERS table are flashed back.

Answer: A,B

NEW QUESTION # 180
Which three methods can be used for heap table data migration after upgrading a database? (Choose three.)

• A. using Oracle Data Pump
• B. using Database Replay
• C. using operating system file copy utilities
• D. using Database Upgrade Assistant
• E. using the CREATE TABLE AS SELECT SQL statement
• F. using SQL Developer

Answer: A,D,E

Explanation:
Explanation
https://www.oracle.com/a/tech/docs/twp-upgrade-oracle-database-19c.pdf

NEW QUESTION # 181
Choose the best answer. Examine this output of an export from the current release of an Oracle multitenant database: $ sqlplus system/oracle . SQL> col name for a10 SQL> select name, open_mode from v$pdbs; NAME OPEN_MODE ---------------------------------------PDB$SEED READ ONLY PDB1 READ WRITE PDB2 MOUNTED SQL> exit Next you execute: $ expdp system/oracle full=y What is the outcome?

• A. It creates a full export of only the used while connected to the root container and PDB1. container and all PDBs. container and all open PDBs. root container.
• B. It creates a full export of the root
• C. It creates a full export of the root
• D. It fails because Data Pump cannot be container.

Answer: D

NEW QUESTION # 182
Examine this configuration:
1. CDB1 is an Oracle Database 12c Release 2 container database (CDB).
2. PDB1 and PDB2 are two pluggable databases (PDBs) in CDB1.
After successfully performing all the preupgrade tasks, you execute these commands from the Oracle Database 18c environment:
What is the outcome?

• A. Only CDB$ROOT and PDB$SEED are upgraded.
• B. It fails because PDB2 is not in UPGRADE state.
• C. It fails because PDB$SEED is in MIGRATE state.
• D. Only CDB$ROOT, PDB$SEED, and PDB2 are upgraded.
• E. Only CDB$ROOT, PDB$SEED, and PDB1 are upgraded.
• F. CDB$ROOT, PDB$SEED, PDB1, and PDB2 are upgraded.

Answer: A

NEW QUESTION # 183
Which two are true about creating RMAN backups for an Oracle container database? (Choose two.)

• A. SPFILE backups can be created while connected to an application root PDB.
• B. The BACKUP DATABASE PLUS ARCHIVELOG command will back up archive logs when RMAN is connected to a PDB.
• C. The BACKUP PLUGGABLE DATABASE command can be used to back up CDB$ROOT.
• D. Tablespaces from different PDBs with identical names must be backed up by connecting RMAN separately to each PDB to back up the tablespaces.
• E. The BACKUP DATABASE command will create a pluggable database (PDB) backup when RMAN is connected to a PDB.

Answer: D,E

NEW QUESTION # 184
Which two are true about gathering optimizer statistics? (Choose two.)

• A. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to a PDB opened in read/write mode gathers object statistics for that PDB.
• B. System statistics can be gathered only while connected to CDB$ROOT.
• C. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open pluggable databases (PDBs)
• D. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in CDB$ROOT.
• E. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open PDBs except PDB$SEED.

Answer: A,C

Explanation:
Explanation
https://mikedietrichde.com/2016/10/21/gather-fixed-objects-stats-in-pdbs-as-well/#:~:text=Yes%2C%20you'll%2
.

NEW QUESTION # 185
Which two are true about Oracle Flashback features? (Choose two.)

• A. FLASHBACK TABLE can undrop a column.
• B. After a database is restored from flashback logs using the FLASHBACK DATABASE command, it is sometimes rolled forward using redo logs.
• C. FLASHBACK QUERY can retrieve REDO records from ONLINE and ARCHIVED REDO LOG files.
• D. FLASHBACK VERSION QUERY can retrieve REDO records from ONLINE and ARCHIVED REDO LOG files.
• E. FLASHBACK DROP can undrop an index when undropping a table.

Answer: B,E

NEW QUESTION # 186
Examine this configuration:
1. CDB1 and CDB2 are two container databases.
2. PDB1 is a pluggable database in CDB1.
3. PDB1_C1_SRV is a service for PDB1.
4. CDB1_LINK is a database link in CDB2 referring to PDB1.
5. CDB2 is also an entry in tnsnames.ora pointing to the CDB2 database default service.
You execute these commands successfully:
$ sqlplus sys/oracle_4U@cdb2 as sysdba
SQL> CREATE PLUGGABLE DATABASE PDB1
FROM PDB1@CDB1_LINK
SERVICE_NAME_CONVERT=('PDB1_C1_SRV','PDB1_C2_SRV');
Which two are true? (Choose two.)

• A. PDB1_C2_SRV will be created but not started.
• B. PDB1_C1_SRV in CDB1 will be renamed PDB1_C2_SRV.
• C. PDB1_C2_SRV will be created and started automatically.
• D. PDB1 will be created in CDB2 and left in MOUNT state.
• E. PDB1 will be created in CDB2 and automatically opened.

Answer: B,E

NEW QUESTION # 187
Choose three. Which three are true about corrupted data blocks and their recovery in an Oracle Database?

• A. If a row lock is held by a nonexistent transaction, the block containing the row is media corrupt.
• B. A media corrupt block is one where the block is not formatted correctly.
• C. The ANALYZE TABLE VALIDATE STRUCTURE CASCADE command verifies that each table row has an index entry pointing to it.
• D. If a row lock is held by a nonexistent transaction, the block containing the row is logically corrupt.
• E. DB_LOST_WRITE_PROTECT=TYPICAL causes extra logging overhead on the standby database.
• F. DB_BLOCK_CHECKING=TRUE causes a check sum to be added to each data block to help detect physical or media corruption.

Answer: C,D,E

NEW QUESTION # 188
Which four are true about RMAN backup sets? (Choose four.)

• A. A backup set must be written to media.
• B. A data file can be split into multiple sections stored in different backup pieces in the same backup set.
• C. Blocks from multiple data files can be contained in one backup set,
• D. A backup set must be written to disk.
• E. A backup set can contain only one backup piece.
• F. A data file can be split into multiple sections stored in different backup sets.
• G. Blocks from multiple data files can be contained in one backup piece,
• H. A backup piece can belong to only one backup set.

Answer: A,C,E,F

NEW QUESTION # 189
Which three are true about Optimizer Statistics Advisor? (Choose three.)

• A. It can be run only manually.
• B. It runs automatically every night by default.
• C. It can recommend changes to improve the statistics gathering process.
• D. It is part of the DBMS_ADVISORpackage.
• E. It always analyzes all schemas in the database.
• F. It is part of the DBMS_STATSpackage.

Answer: C,E,F

Explanation:
Explanation/Reference: https://oracle-base.com/articles/12c/optimizer-statistics-advisor-12cr2

NEW QUESTION # 190
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