“1Z0-148 – Oracle University” Exam 1Z0-148. Here you can get the latest free Oracle 1Z0-148 exam exercise questions and answers for free and easily improve your skills!
1Z0-148 exam – By becoming an Oracle Database PL/SQL Certified Professional, you will be ready to fully exploit the most advanced features of PL/SQL. From performance to maintainability to application code architecture, you will be able to provide guidance at a more strategic level,
thereby offering much higher value to your company and the marketplace.
You will gain a thorough knowledge of PL/SQL language, its architecture, features, interactions with the SQL engine, programming constructs and datatypes. Passing the exam validates your knowledge of subjects such as complex data types, dynamic cursors, external procedures, security features and considerations, and performance-related features such as caching, parallel execution and profiling.
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1Z0-148 – Oracle University：https://education.oracle.com/oracle-database-advanced-pl-sql/pexam_1Z0-148
Free Oracle 1Z0-148 Exam Practice Questions
View the Exhibit.
How do you reduce the chances of SQL injection for the procedure?
A. Execute the SQL statement in V_STMT as dynamic SQL.
B. Remove the default value for the arguments in the procedure.
C. Convert the condition in the WHERE clause to be accepted from the user and concatenated.
D. Convert the SELECT statement to static SQL, placing the value of P_EMAIL into a local variable.
Correct Answer: D
You executed the following command to alter the session parameter:
SQL> ALTER SESSION SET PLSCOPE_SETTINGS = \\’IDENTIFIERS:ALL\\’;
Which two statements are true in this scenario? (Choose two.)
A. If the SYSAUX tablespace is unavailable, and you compile a program unit, PL/Scope does not collect data for the
B. All the identifiers declared in compiled program units before altering the parameter settings appear in the
*_IDENTIFIER static data dictionary views.
C. All the identifiers declared in compiled program units before altering the parameter settings do not appear in the
*_IDENTIFIER static data dictionary views.
D. If the SYSAUX tablespace is unavailable, and you compile a program unit, PL/Scope collects data for the compiled
object and stores it in the SYSTEM tablespace.
Correct Answer: AC
View the Exhibit and examine the procedure to create a trigger name based on the table name supplied to the
Which three statements are appropriate for protecting the code in the procedure from SQL injection? (Choose three.)
A. Explicitly validate the identifier length limit.
B. Add AUTHID DEFINER to the definition of the procedure.
C. Use PRAGMA RESTRICT_REFERENCES in the procedure.
D. Filter out control characters in user-supplied identifier names.
E. Use the object ID of the table from the data dictionary to build the trigger name.
Correct Answer: ADE
Which two statements are true about the SQL Query Result Cache? (Choose two.)
A. It can store the query results for temporary tables.
B. It can be set at the system, session, or query level.
C. It is used only across statements in the same session.
D. Cached query results become invalid when the data accessed by the query is modified.
Correct Answer: BD
Examine the commands: CREATE TYPE typ_course_tab IS VARRAY(5) OF VARCHAR2(20) / CREATE TYPE
typ_course_nst AS TABLE OF typ_course_tab / CREATE TABLE faculty (faculty_id NUMBER(5), faculty_name
VARCHAR2(30), courses typ_course_nst) NESTED TABLE courses STORE AS course_stor_tab / INSERT INTO
faculty VALUES (101, \\’Jones\\’, NULL); UPDATE (SELECT courses FROM faculty WHERE faculty_id=101) SET
courses = typ_course_nst(11,\\’Oracle\\’); Which statement is true about the execution of these commands?
A. All the commands execute successfully.
B. Only the first two commands execute successfully.
C. Only the first four commands execute successfully.
D. Only the first three commands execute successfully.
Correct Answer: C
Which PRAGMA statement may enable associated PL/SQL functions to run more efficiently when called from SQL?
A. PRAGMA SERIALLY_REUSABLE;
B. PRAGMA UDF;
C. PRAGMA INLINE (`\\’, `YES\\’);
D. PRAGMA AUTONOMOUS_TRANSACTION;
Correct Answer: B
Examine the structure of the DEPT table which exists in both BRANCH1 and BRANCH2 schemas:
Examine this code:
Which three modifications must be done to endure the anonymous block displays the output form the BRANCH2.DEF
A. Change the IF condition in the anonymous block to 1_dept IS EMPTY.
B. Change the IF condition in the anonymous block to CARDINALITY (1_dept) IS NULL.
C. Add BEQUEATH DEFINER to the EMP_COUNT_VW view.
D. Add BEQUEATH CURRENT_USER to the EMP_COUNTS_VW view.
E. IN BRANCH2 execute GRANT INHERIT PRIVILEGES ON USER branch2 TO branch1;
F. Add AUTHID CURRENT_USER to the EMP_COUNT function.
Correct Answer: BDE
The database instance was started up using the automatic memory management feature. No value was set for the
Examine the following initialization parameter settings for your database:
MEMORY_TARGET = 500M
RESULT_CACHE_MODE = MANUAL
You execute a query by using the result_cache hint. Which statement is true in this scenario?
A. The query results are not stored because no memory is allocated for the result cache.
B. The query results are stored and 0.5% of the memory target is allocated to the result cache.
C. The query results are stored and 0.25% of the memory target is allocated to the result cache.
D. The query results are not stored because the RESULT_CACHE_MODE parameter is not set to FORCE.
Correct Answer: C
Consider a function totalEmp () which takes a number as an input parameter and returns the total number of employees
who have a salary higher than that parameter.
Examine this PL/SQL package AS
Which two definitions of totalEmp () result in an implicit conversion by Oracle Database on executing this PL/SQL
A. CREATE FUNCTION totalEmp (sal IN NUMBER) RETURN NUMBER IStotal NUMBER :=0;BEGIN…RETUNRN
B. CREATE FUNCTION totalEmp (sal IN NUMBER) RETURN NUMBER IStotal NUMBER :=0;BEGIN…RETUNRN
C. CREATE FUNCTION totalEmp (sal IN PLS_INTEGER) RETURN NUMBER IStotal NUMBER
D. CREATE FUNCTION totalEmp (sal IN BINARY_FLOAT) RETURN NUMBER IStotal NUMBER
E. CREATE FUNCTION totalEmp (sal IN POSITIVEN) RETURN NUMBER IStotal NUMBER :=0;BEGIN…RETUNRN
Correct Answer: BC
Examine the PL/SQL code for the GET_TABLE_MD function given below:
CREATE OR REPLACE FUNCTION get_table_md RETURN CLOB IS
h := DBMS_METADATA.OPEN(\\’TABLE\\’);
th := DBMS_METADATA.ADD_TRANSFORM(h,\\’DDL\\’);
doc := DBMS_METADATA.FETCH_CLOB(h);
Which statement is true about the compilation and execution of the function?
A. The function retrieves the metadata in Extensible Markup Language (XML) format for creating the TIMECARDS table
in the HR schema.
B. The compilation produces an error because DBMS_METADATA.SET_FILTER(h,\\’SCHEMA\\’,\\’HR\\’)is not placed in
the correct order.
C. The function retrieves the metadata as a data definition language (DDL) statement for creating the TIMECARDS
table in the HR schema.
D. The execution of the function produces an error because multiple objects are fetched and
DBMS_METADATA.FETCH_CLOB is not called in a LOOP.
Correct Answer: C
Which two queries\\’ results cannot be cached? (Choose two.)
A. queries having the GROUP BY clause
B. queries having the ORDER BY clause
C. the query on dictionary and temporary tables
D. queries having SYSDATE and SYS_TIMESTAMP SQL functions
Correct Answer: CD
View the Exhibit and examine the structure of the EMPLOYEES table.
Examine the following PL/SQL block for storing the salary of all sales representatives from the EMPLOYEES table in an
2 emp_cv SYS_REFCURSOR;
3 TYPE list IS TABLE OF emp_cv;
4 sals list;
6 OPEN emp_cv FOR SELECT salary FROM employees
7 WHERE job_id = \\’SA_REP\\’;
8 FETCH emp_cv BULK COLLECT INTO sals;
9 CLOSE emp_cv;
What should you correct in the above code to ensure that it executes successfully?
A. Replace EMP_CV in line 3 with employees.salary%TYPE.
B. Replace line 2 with TYPE refcur IS REF CURSOR; emp_cv refcur;.
C. Replace BULK COLLECT in line 8 with the OPEN, FETCH, LOOP, and CLOSE statements.
D. Replace line 2 with TYPE refcur IS REF CURSOR RETURN employees.salary%TYPE; emp_cv refcur;.
Correct Answer: A
Which two statements are true about the usage of the DBMS_DESCRIBE.DESCRIBE_PROCEDURE procedure?
A. You can describe remote objects.
B. You can describe anonymous PL/SQL blocks.
C. You can describe a stored procedure, stored function, packaged procedure, or packaged function.
D. You can obtain information about the position, name, and data type of the arguments of a procedure.
Correct Answer: CD
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