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Oracle 1z0-083 Dumps

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Oracle 1z0-083 Sample Questions

Question # 1

Choose two. Which two are true about monitoring waits for sessions and services? 

A. V$SERVICE_EVENT displays wait counts for every wait event for each service even including counts of zero for waits that never occurred.
 B. V$SESSION_WAIT and V$SESSION both contain details of the event on which a nonwaiting session last waited. 
C. V$SESSION_WAIT and V$SESSION both contain details of the event on which a waiting session is currently waiting. 
D. V$SESSION_EVENT displays all waits events for those events that have occurred at least once for sessions that have now terminated.
E. V$SESSION_WAIT_CLASS displays waits broken down by wait class only for terminated sessions. 



Question # 2

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



Question # 3

Choose the best answer. How do you configure a CDB for local undo mode? 

A. Open the CDB instance in restricted mode. In CDB$ROOT, drop the UNDO tablespace. Execute ALTER DATABASE LOCAL UNDO ON in each PDB, and then restart the CDB instance. 
B. Open the CDB instance in upgrade mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON, and then restart the CDB instance. 
C. Open the CDB instance in upgrade mode. In each PDB, execute ALTER DATABASE LOCAL UNDO ON, create an UNDO tablespace, and then restart the CDB instance. 
D. Open the CDB instance in restricted mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON. create an UNDO tablespace in each PDB, and then restart the CDB instance. 
E. Open the CDB in read-only mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON, and then change the CDB to read/write mode. 



Question # 4

Examine the query and its output executed In an RDBMS Instance: Which three statements are true about the users (other than sys) in the output?

A. TheC# # B_ADMIN user can perform all back up and recovery operation susing RMAN only. 
B. The C # # C_ADMIN user can perform the data guard operation with Data Guard Broker. 
C. The C # # A_ADMIN user can perform wallet operations. 
D. The C # # D_ADMIN user can perform backup and recovery operations for Automatic Storage Management (ASM). 
E. The C # # B_ADMIN user can perform all backup and recovery operations using RMAN or SQL* Plus. 



Question # 5

choose three Which three are true about unified auditing in full mode? 

A. The unified audit trail is written to a read-only table. 
B. The unified audit trail is written to a read-only external file. 
C. Audit records are created for COMMIT, ROLLBACK, and SAVEPOINT statements. 
D. Audit records are created for SYS. 
E. Audit records are created for non-sys users. 



Question # 6

Your production database is running in archivelog mode. You use RMAN with a recovery catalog to back up your database to media and the database is uniquely identified in the recovery catalog. You want to create a test database from the production database and allow the production database to remain open during the duplicate process. You restore the database backups to a new host with the same directory structure as the production database and want to use the recovery catalog for future backups after the database is successfully restored to the new host. How would you achieve this? 

A. by using the RMAN switch command to set the new location for the data files
 B. by using the RMAN duplicate command with nofilenamecheck to recover the database to the new host 
C. by using the RMAN duplicate command with dbid and set new name for tablespace to recover the database to the new host 
D. by creating a new database in the new host, and then using the RMAN recover command 



Question # 7

Choose two. Which two are true about PDB archive files? 

A. DBMS_PDB.CHECK_PLUG_COMPATIBILITY can be run against a PDB archive. 
B. They contain a PDB manifest file and all the data files in uncompressed form for a PDB. 
C. They contain all the data files only in uncompressed form for a PDB. 
D. They must be created using the DBMS_PDB package. 
E. They contain a PDB manifest file and all the data files in compressed form for a PDB. 
F. They contain all the data files only in compressed form for a PDB. 



Question # 8

choose two You take your database backups by using the RMAN media management interface (MMI). Which two are true about the use of the RMAN MMI? 

A. You can 
B. You can 
C. You can 
D. You can 
E. You can 



Question # 9

In one of your databases, unified auditing is enabled and an SH.SALES table exists. You successfully execute these commands: SQL> CREATE AUDIT POLICY sales_pol ACTIONS select on sh.sales; SQL> AUDIT POLICY sales_pol; Which statement is true about SALES_POL? 

A. It is enabled for all users having SELECT privilege on SH.SALES. 
B. Only successful queries of SH.SALES are written to the audit trail. 
C. It is only enabled for user SH. 
D. Audit records are always stored in an external audit file. 



Question # 10

You plan to create a database by using the Database Configuration Assistant (DBCA), with t he following specifications: Applications will connect to the database via a middle tier. The number of concurrent user connections will be high. The database will have mixed workload, with t he execution of complex BI queries scheduled at night. Which DBCA option must you choose to create the database? 

A. a General Purpose database template with default memory allocation 
B. a Data Warehouse database template, with t he dedicated server mode option and AMM enabled 
C. a General Purpose database template, with t he shared server mode option and Automatic Memory Management (AMM) enabled 
D. a default database configuration 



Question # 11

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



Question # 12

Choose two. Which two are true about a Recovery Manager (RMAN) duplication without a TARGET connection? 

A. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed. 
B. RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.
 C. The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance.
 D. The UNDO TABLESPACE clause is never required.
 E. RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance. 



Question # 13

Choose two. Which two are true about a read-only Oracle home? 

A. It is enabled by performing a software-only Oracle Database installation and then running the roohctl ¬enable script. 
B. It requires the Rapid Home Provisioning service. 
C. Its configuration data and log files reside in subdirectories under the Oracle home. 
D. It is enabled by performing an Oracle Database installation with database creation and then running the roohctl -enable script. 
E. It contains an image that can be distributed across multiple servers. 



Question # 14

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

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



Question # 15

Choose three. Which three actions are mandatory post database upgrade?

 A. Updating client scripts with the new Oracle home.
 B. Resetting passwords to enforce case-sensitivity. 
C. Run OPatch commands from the new Oracle home. 
D. Setting threshold values for tablespace alerts. 
E. Migration to unified auditing. 
F. Upgrading user tables that depend on Oracle-maintained abstract data types. 



Question # 16

Choose two. RMAN has just been connected to a target database and the recovery catalog database. In which two cases would an automatic full resynchronization occur between this target database's control file and the RMAN recovery catalog?

 A. when control file metadata for archive log backups or image copies has been overwritten in the target database's control file due to being older than CONTROL_FILE_RECORD_KEEP_TIME 
B. when a new tablespace is added to a registered target database
 C. when a backup of the current control file is created 
D. when control file metadata for data file backups or image copies has been overwritten in the target database's control file due to being older than CONTROL_FILE_RECORD_KEEP_TIME 
E. when the target is first registered 



Question # 17

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 fails because Data Pump cannot be container. 
B. It creates a full export of the root 
C. It creates a full export of the root 
D. 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. 



Question # 18

Choose three. Which three are true about Data Pump in an Oracle multitenant environment? 

A. It can be used to transport data from a non-CDB to a PDB. 
B. It can be used to clone a CDB. 
C. It can be used to transport data between PDBs.
 D. It can be used to transport data from a PDB to a non-CDB. 
E. It can be used to create a new PDB. 



Question # 19

Choose the best answer. Which should be tuned first when doing a performance tuning exercise for an Oracle Database environment? 

A. log writer performance 
B. database writer performance 
C. general operating system health 
D. SQL statements 
E. database instance memory management and sizes 



Question # 20

The persistent configuration settings for RMAN have default for all parameters. Identify four RMAN commands that produce a multi-section backup. 

A. BACKUP TABLESPACE SYSTEM SECTION SIZE 100M; 
B. BACKUP AS COPY TABLESPACE SYSTEM SECTION SIZE 100M; 
C. BACKUP ARCHIVELOG ALL SECTION SIZE 25M; 
D. BACKUP TABLESPACE "TEMP" SECTION SIZE 10M; 
E. BACKUP TABLESPACE "UNDO" INCLUDE CURRENT CONTROLFILE SECTION SIZE 100M; 
F. BACKUP SPFILE SECTION SIZE 1M; 
G. BACKUP INCREMENTAL LEVEL 0 TABLESPACE SYSAUX SECTION SIZE 100M; 



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