Testking offers free demo for 1Z0-144 exam. "Oracle Database 11g: Program with PL/SQL", also known as 1Z0-144 exam, is a Oracle Certification. This set of posts, Passing the Oracle 1Z0-144 exam, will help you answer those questions. The 1Z0-144 Questions & Answers covers all the knowledge points of the real exam. 100% real Oracle 1Z0-144 exams and revised by experts!
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Q1. Which two statements are true about the PL/SQL initialization parameters? (Choose two.)
A. To use native code compilation, PLSQL_OPTIMIZE_I.EVEL should be set to a value less than or equal to l.
B. The default value of 2 for PLSQL_OPTIMI2E_LEVEL allows the compiler to rearrange code for better performance.
C. Setting PLSQL_CODE_TYPE to native provides the greatest performance gains only for computation-intensive procedural operations.
D. Changing the value of the PLSQL_CODE_TYPE parameter affects all the PL/SQL library units that have already been compiled
Answer: B,C
Q2. Examine the following PL/SQL code:
The server output is on for the session. Which statement is true about the execution of the code?
A. The code executes successfully and gives the desired output.
B. The code generates an error because the EMP_RECORD variable is not declared.
C. The code generates an error because the cursor is not opened before the FOR loop.
D. The code generates an error because the loop does not have the exit when clause.
Answer: A
Q3. View the Exhibit and examine the structure of the employees table.
Examine the following block of code:
What is the outcome when the above code is executed?
A. It executes successfully.
B. It gives an error because decode cannot be used in a PL/SQL block.
C. It gives an error because the AVG function cannot be used in a PL/SQL block
D. It gives an error because the MONTHS_BETWEEN function cannot be used in a PL/SQL block.
E. It gives an error because both the AVG and decode functions cannot be used in a PL/SQL block.
Answer: A
Q4. Which three statements are true about wrapping? (Choose three.)
A. The PL/SQL wrapper detects and reports only syntax errors.
B. The PL/SQL wrapper detects and reports both syntax and semantic errors.
C. When wrapping a package or object type, both the body and specification should be wrapped.
D. When wrapping a package or object type, only the body should be wrapped, not the specification.
E. To change a wrapped object, the original source code needs to be modified and then wrapped again
F. To change a wrapped object, the wrapped code can be unwrapped, modified In a text file, and then wrapped again.
Answer: D,E,F
Explanation: Reference: http://docs.oracle.com/cd/B28359_01/appdev.111/b28370/wrap.htm#BEHJJHAG
Q5. Which statements are true about the WHEN OTHERS exception handler? (Choose all that apply)
A. It can be the first exception handler.
B. It can be the only exception handler for the code.
C. It traps all the exceptions that are not already trapped.
D. You can have multiple OTHERS clauses to trap all the multiple unhandled exceptions.
Answer: C
Explanation: Reference:
http://www.techonthenet.com/oracle/exceptions/when_others.php
Q6. Which two tasks should be created as functions instead of as procedures? (Choose two.)
A. Reference host or bind variables in a PL7SQL block of code
B. Tasks that compute and return multiple values to the calling environment
C. Tasks that compute a value that must be returned to the calling environment
D. Tasks performed in SQL that increase data independence by processing complex data analysis within the Oracle server, rather than by retrieving the data into an application
Answer: A,C
Explanation: Explanation/Reference:
Functions are used to return a value. Functions must return only a single value.
Procedure are used to perform an action.
Both functions and procedures are using to do a special task or action. In functions it is
must to return a single value, where as in procedures it’s not compulsory
Q7. Consider the following scenario:
Local procedure a calls remote procedure B
Procedure A was compiled at 8 AM.
Procedure A was modified and recompiled at 9 AM.
Remote procedure B was later modified and recompiled at 11 AM.
The dependency mode is set to timestamp.
Which statement correctly describes what happens when procedure A is invoked at 1 PM?
A. Procedure A is invalidated and recompiled immediately.
B. There is no effect on procedure A and it runs successfully.
C. Procedure B is invalidated and recompiled again when invoked.
D. Procedure A is invalidated and recompiles when invoked the next time.
Answer: D
Q8. View Exhibit1 and examine the structure of the EMP table.
View Exhibit2 and examine the PIVSQL block of code.
What is the outcome?
A. It gives an error because the return type is not valid.
B. It gives an error because the record type is not defined within the function
C. It gives an error because the function call in DBMS_OUTPUT. PUT__LINE is not valid
D. It executes successfully and displays the names and salaries of all employees who earn the highest salary.
E. It executes successfully but does not display the names and salaries of all employees who earn the highest salary.
Answer: D
Q9. View the Exhibit to examine the PL/SQL block.
Which statement is true about the execution of the PL/SQL block?
A. It executes successfully and gives the desired output.
B. It does not execute because the definition of type population is indexed by VARCHAR2.
C. It executes, and the string keys of an associative array are not stored in creation order, but in sorted order.
D. It does not execute because the value that is once assigned to the element of the associative array cannot be changed.
Answer: A
Q10. Which two statements correctly differentiate functions and procedures? (Choose two.)
A. A function can be called only as part of a SQL statement, whereas a procedure can be called only as a PL7SQL statement.
B. A function must return a value to the calling environment, whereas a procedure can return zero or more values to its calling environment.
C. A function can be called as part of a SQL statement or PL/SQL expression, whereas a procedure can be called only as a PL/SQL statement.
D. A function may return one or more values to the calling environment, whereas a procedure must return a single value to its calling environment.
Answer: B,C