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NEW QUESTION 47
Which three statements are true about advanced connection options supported by Oracle Net for connection to Oracle Database instances? (Choose three.)
- A. Connect Time Failover requires the connect string to have two or more listener addresses configured
- B. Connect Time Failover requires the use of Transparent Application Failover (TAF)
- C. Source Routing enables the use of Connection Manager (CMAN) which enables network traffic to be routed through a firewall
- D. Load Balancing requires the use of a name server
- E. Load Balancing can balance the number of connections to dispatchers when using a Shared Server configuration
- F. Source Routing requires the use of a name server
Answer: A,C,F
NEW QUESTION 48
Examine these commands:
Which two statements are true about the sqlldr execution? (Choose two.)
- A. It generates a log that contains control file entries, which can be used with normal SQL*Loader operations
- B. It generates a sql script that it uses to load data from EMP.DAT to EMP
- C. It overwrites data in EMP with data in EMP.DAT
- D. It appends data from EMP.DAT to EMP
- E. It uses the database buffer cache to load data
Answer: A,D
NEW QUESTION 49
In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1.
The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains:
Which statement is true?
- A. There are two listeners named LISTENER and LISTENER_1 running simultaneously using port 1521 on the same host as the database instances
- B. LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration
- C. Dynamic service registration cannot be used for this database instance
- D. The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration
- E. The LREG process registers services dynamically with the LISTENER_1 listener
Answer: B
NEW QUESTION 50
View the Exhibit and examine the structure of the PRODUCTS table.
Which two tasks require subqueries? (Choose two.)
- A. Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE
- B. Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and whose status is orderable
- C. Display the minimum PROD_LIST_PRICE for each product status
- D. Display suppliers whose PROD_LIST_PRICE is less than 1000
- E. Display the total number of products supplied by supplier 102 which have a product status of obsolete
Answer: A,B
NEW QUESTION 51
You need to calculate the number of days from 1st January 2019 until today.
Dates are stored in the default format of DD-MON-RR.
Which two queries give the required output? (Choose two.)
- A. SELECT TO_DATE(SYSDATE, 'DD/MONTH/YYYY') - '01/JANUARY/2019' FROM DUAL;
- B. SELECT TO_CHAR(SYSDATE,'DD-MON-YYYY') - '01-JAN-2019' FROM DUAL;
- C. SELECT ROUND(SYSDATE - TO_DATE('01/JANUARY/2019')) FROM DUAL;
- D. SELECT ROUND(SYSDATE - '01-JAN-2019') FROM DUAL;
- E. SELECT SYSDATE - TO_DATE('01-JANUARY-2019') FROM DUAL;
Answer: C,E
NEW QUESTION 52
Which three statements are true about inner and outer joins? (Choose three.)
- A. Outer joins can only be used between two tables per query
- B. A full outer join returns matched and unmatched rows
- C. Outer joins can be used when there are multiple join conditions on two tables
- D. An inner join returns matched rows
- E. A full outer join must use Oracle syntax
- F. A left or right outer join returns only unmatched rows
Answer: B,D,F
Explanation:
Reference:
https://www.studytonight.com/dbms/joining-in-sql.php
NEW QUESTION 53
Which statement is true about aggregate functions?
- A. Aggregate functions can be nested to any number of levels
- B. Aggregate functions can be used in any clause of a SELECT statement
- C. The MAX and MIN functions can be used on columns with character data types
- D. The AVG function implicitly converts NULLS to zero
Answer: A
NEW QUESTION 54
Which two are true about complete recovery? (Choose two.)
- A. It is possible only when the database is in MOUNT state
- B. The database must have FLASHBACK enabled in order to perform it.
- C. Only RMAN backupsets can be used to restore a database as part of it.
- D. Incremental backups can be used to roll forward the database while performing it.
- E. Uncommitted transactions will be rolled back after it completes.
Answer: A,B
NEW QUESTION 55
Which three activities are recorded in the database alert log? (Choose three.)
- A. session logins and logouts
- B. non-default database parameters
- C. deadlock errors
- D. block corruption errors
- E. Data Definition Language (DDL) statements
Answer: B,C,D
Explanation:
https://docs.oracle.com/cd/B28359_01/server.111/b28310/monitoring001.htm#ADMIN11247
NEW QUESTION 56
Which three statements are true about the tools used to configure Oracle Net Services? (Choose three.)
- A. The lsnrctl utility requires a listener.ora file to exist before it is started
- B. Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target
- C. Oracle Net Manager can be used to centrally configure listeners on any database server target
- D. The Oracle Net Configuration Assistant is only used when running the Oracle installer
- E. Enterprise Manager Cloud Control can be used to centrally configure listeners on any managed database server
- F. Oracle Net Manager can be used to locally configure naming methods on a database server
Answer: C,E,F
NEW QUESTION 57
Evaluate these commands which execute successfully:
Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence? (Choose two.)
- A. If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS
- B. Sequence ORD_SEQ is guaranteed not to generate duplicate numbers
- C. Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times
- D. Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ
- E. Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO
Answer: B,D
NEW QUESTION 58
Which three statements are true about dropping and unused columns in an Oracle database?
(Choose three.)
- A. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
- B. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
- C. Partition key columns cannot be dropped.
- D. A DROP COLUMN command can be rolled back
- E. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
- F. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
Answer: B,E,F
NEW QUESTION 59
Which two are true about shrinking a segment online? (Choose two.)
- A. To shrink a table it must have row movement enabled
- B. It always eliminates all migrated rows if any exist in the table
- C. To shrink a table it must have a UNIQUE KEY constraint
- D. It is not possible to shrink either indexes or Index Organized Tables (IOTs)
- E. To shrink a table it must have a PRIMARY KEY constraint
- F. It must be in a tablespace that uses Automatic Segment Space Management (ASSM)
Answer: A,E
NEW QUESTION 60
Examine this command:
Which two statements are true? (Choose two.)
- A. The file is renamed and stored in the same location
- B. If Oracle Managed Files (OMF) is used, then the file is renamed but moved to DB_CREATE_FILE_DEST.
- C. The tablespace containing SALES1.DBF must be altered OFFLINE before executing the command.
- D. DML may be performed on tables with one or more extents in this data file during the execution of this command.
- E. The tablespace containing SALES1.DBF must be altered READ ONLY before executing the command.
Answer: D,E
NEW QUESTION 61
Which three statements are true about advanced connection options supported by Oracle Net for connection to Oracle Database instances? (Choose three.)
- A. Connect Time Failover requires the connect string to have two or more listener addresses configured
- B. Connect Time Failover requires the use of Transparent Application Failover (TAF)
- C. Source Routing enables the use of Connection Manager (CMAN) which enables network traffic to be routed through a firewall
- D. Load Balancing requires the use of a name server
- E. Load Balancing can balance the number of connections to dispatchers when using a Shared Server configuration
- F. Source Routing requires the use of a name server
Answer: A,C,F
Explanation:
https://docs.oracle.com/cd/E11882_01/network.112/e41945/advcfg.htm#NETAG013
NEW QUESTION 62
Your database instance was shut down normally and then started in NOMOUNT state. You then execute this command:
ALTER DATABASE MOUNT;
Which two actions are performed? (Choose two.)
- A. The online redo logs are opened
- B. The initialization parameter file is read
- C. The online data files are opened
- D. The alert log records the execution details
- E. The control file is read
- F. The Oracle background processes are started
Answer: E,F
NEW QUESTION 63
Which three statements are true regarding indexes? (Choose three.)
- A. A UNIQUE index can be altered to be non-unique
- B. An update to a table can result in no updates to any of the table's indexes
- C. An update to a table can result in updates to any or all of the table's indexes
- D. A SELECT statement can access one or more indices without accessing any tables
- E. When a table is dropped and is moved to the RECYCLE BIN, all indexes built on that table are permanently dropped
- F. A table belonging to one user can have an index that belongs to a different user
Answer: A,C,E
NEW QUESTION 64
You execute this command:
Sufficient storage is available in filesystem /u01.
Which two statements are true about the BIG_TBStablespace? (Choose two.)
- A. AUTOEXTEND is possible for the datafile
- B. Additional data files may not be added
- C. It will be a dictionary-managed tablespace by default
- D. It will always have a 32K blocksize
- E. It must be bigger than the largest SMALLFILE tablespace
Answer: A,E
NEW QUESTION 65
Evaluate these commands which execute successfully:
Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence?
(Choose two.)
- A. If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS
- B. Sequence ORD_SEQ is guaranteed not to generate duplicate numbers
- C. Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times
- D. Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ
- E. Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO
Answer: B,D
NEW QUESTION 66
A script abc.sql must be executed to perform a job.
A database user HR, who is defined in this database, executes this command:
$ sqlplus hr/hr@orcl @abc.sql
What will happen upon execution?
- A. The command fails and reports an error because @ is used twice
- B. The command succeeds and HR will be connected to the orcl database instance, and the abc.sql script will be executed
- C. The command succeeds and HR will be connected to the orcl and abc.sql databases
- D. The command fails because the script must refer to the full path name
Answer: B
NEW QUESTION 67
Examine the description of the CUSTOMERS table:
For customers whose income level has a value, you want to display the first name and due amount as 5% of their credit limit. Customers whose due amount is null should not be displayed.
Which query should be used?
- A. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level != NULLAND due_amount !=NULL;
- B. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level IS NOT NULLAND cust_credit_limit IS NOT NULL;
- C. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_incoms_level IS NOT NULLAND due_amount IS NOT NULL;
- D. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level != NULLAND cust_credit_level !=NULL;
- E. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level <> NULLAND due_amount <> NULL;
Answer: B
NEW QUESTION 68
Table ORDER_ITEMS contains columns ORDER_ID, UNIT_PRICE and QUANTITY, of data type NUMBER.
Examine these SQL statements:
Statement 1:
SELECT MAX(unit_price * quantity) "Maximum Order"
FROM order_items;
Statement 2:
SELECT MAX(unit_price * quantity) "Maximum Order"
FROM order_items
GROUP BY order_id;
Which two statements are true?
- A. Both the statements give the same output.
- B. Statement 2 returns only one row of output.
- C. Statement 1 returns only one row of output.
- D. Statement 2 may return multiple rows of output.
- E. Both statements will return NULL if either UNIT_PRICE or QUANTITY contains NULL.
Answer: C,D
Explanation:
https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj27781.html
The Expression can contain multiple column references or expressions, but it cannot contain another aggregate or subquery. It must evaluate to a built-in data type. You can therefore call methods that evaluate to built-in data types. (For example, a method that returns a java.lang.Integer or int evaluates to an INTEGER.) If an expression evaluates to NULL, the aggregate skips that value.
NEW QUESTION 69
Examine this command:
CREATE UNDO TABLESPACE undotbs01
DATAFILE `undotbs_01.dbf'
SIZE 100M
AUTOEXTEND ON;
Which two actions must you take to ensure UNDOTBS01 is used as the default UNDO tablespace? (Choose two.)
- A. Add the ONLINE clause
- B. Add the NOLOGGING clause
- C. Make certain that the database operates in automatic undo management mode
- D. Set UNDO_TABLESPACE to UNDOTBS01
- E. Add the SEGMENT SPACE MANAGEMENT AUTO clause
Answer: C,D
NEW QUESTION 70
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