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Oracle 1z0-071 dumps

Oracle 1z0-071 Exam Dumps

Oracle Database 12c SQL
743 Reviews

Exam Code 1z0-071
Exam Name Oracle Database 12c SQL
Questions 326 Questions Answers With Explanation
Update Date July 27, 2026
Price Was : $81 Today : $45 Was : $99 Today : $55 Was : $117 Today : $65

What Is the 1z0-071 Certification Exam?

The 1z0-071 certification exam is a standardized assessment designed to measure a candidate's knowledge, competencies, and practical understanding within a defined professional field. It serves as the primary requirement for earning the Oracle Database 12c, a credential that represents a recognized level of proficiency in its respective industry. Depending on the field, this may involve theoretical knowledge, applied problem-solving, regulatory understanding, or hands-on procedural competence.

The exam is typically developed and maintained by an accrediting body or professional organization that sets the standards for the Oracle Database 12c. This ensures that anyone who earns the credential has met a consistent benchmark, regardless of where they studied or gained their experience. For many professionals, the 1z0-071 Certification Exam represents a formal checkpoint in their career, one that confirms readiness to take on greater responsibility within their chosen field.

Why the Oracle Database 12c Certification Matters?

Certifications like the Oracle Database 12c exist because industries need a reliable way to verify competence beyond a resume or a job title. Earning this credential signals to employers, clients, and colleagues that a professional has invested time in building a structured foundation of knowledge and has been evaluated against an established standard.

Beyond individual recognition, the Oracle Database 12c certification often supports broader professional development. It can influence hiring decisions, contribute to internal advancement, or serve as a prerequisite for more specialized roles within the field. In many industries, certifications also help standardize expectations across organizations, making it easier for professionals to move between employers or sectors while carrying a credential that is widely understood and respected.

Who Should Take the 1z0-071 Exam?

The 1z0-071 exam is generally relevant to individuals who are either entering a field or looking to formalize skills they have already developed through experience. This can include early-career professionals seeking a credential to support their first steps into the industry, as well as experienced practitioners who want official recognition of knowledge gained on the job.

Students preparing to enter the workforce may also pursue the 1z0-071 exam as a way to strengthen their qualifications before graduating or applying for their first roles. In some fields, employers actively encourage or require staff to pursue this certification as part of ongoing professional development, particularly in industries where standards, safety, or compliance play a significant role in daily responsibilities.

Knowledge and Skills Evaluated in the Oracle Database 12c SQL

The Oracle Database 12c SQL is built to evaluate both foundational knowledge and the practical judgment needed to apply that knowledge in real situations. Candidates are generally expected to understand core principles and terminology relevant to their field, along with the reasoning behind established procedures, standards, or best practices.

Depending on the industry, this may include understanding regulatory requirements, following established protocols, applying analytical or technical methods, or exercising sound judgment in situations that require careful decision-making. Rather than testing isolated facts in a vacuum, the Oracle Database 12c SQL tends to reward candidates who can connect concepts to realistic scenarios, reflecting the kind of thinking expected in day-to-day professional practice.

1z0-071 Exam Preparation Resources

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Preparation Features:

  •   326 carefully prepared practice questions
  •   Updated on July 27, 2026
  •   1z0-071 Practice Questions & Answers
  •   Comprehensive Study Guide covering the latest exam objectives
  •   Interactive Practice Test Engine for realistic exam simulation
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Effective preparation for the 1z0-071 certification exam usually begins with a clear understanding of the exam's objectives and structure. Reviewing official guidelines or documentation published by the certifying body provides the most accurate picture of what will be covered and how heavily different areas are weighted.

From there, many candidates benefit from building a structured study plan that breaks preparation into manageable sections over a set period of time. A well-organized 1z0-071 Study Guide can help sequence this material logically, especially for those approaching a topic for the first time. Consistent review, paired with realistic practice, tends to produce better retention than concentrated last-minute studying.

Practical experience, where applicable to the field, also plays an important role in preparation. Working through 1z0-071 Practice Questions and a 1z0-071 practice test can help candidates identify gaps in their understanding and become familiar with the format and pacing of the actual exam. In fields where hands-on skill is assessed, supplementing study with real-world practice or supervised experience often makes the difference between recognizing correct information and genuinely understanding it.

Benefits of Earning the Oracle Database 12c Certification

Successfully earning the Oracle Database 12c certification offers benefits that extend well beyond passing a single exam. It provides documented proof of competence that can be referenced on a resume, professional profile, or internal performance review, offering a clear, third-party validation of skill and knowledge.

The credential can also strengthen professional credibility when working with clients, patients, stakeholders, or colleagues who may not be positioned to evaluate technical or specialized knowledge directly. Over time, this recognition often contributes to expanded career opportunities, whether through new responsibilities, higher-level roles, or eligibility for additional certifications that build on this foundational credential.

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Preparing for the 1z0-071 exam is a process that benefits from organized, consistent effort rather than rushed, last-minute review. MyCertsHub is designed to support that process by offering study resources, practice materials, and educational content that help candidates understand what the Oracle Database 12c SQL covers and how to approach their preparation thoughtfully.

Whether someone is just beginning to explore the Oracle Database 12c or is in the final stages of reviewing material before their exam date, MyCertsHub aims to serve as a dependable resource throughout that journey. Every candidate's path to certification looks a little different, and the goal remains the same: to provide clear, genuinely useful information that supports real understanding of the subject matter.

Oracle 1z0-071 Sample Question Answers

Question # 1

An Oracle database server session has an uncommitted transaction in progress which updated 5000 rows in a table.In which three situations does the transactions complete thereby committing the updates? (Choose three.)

A. when a DBA issues a successful SHUTDOWN TRANSACTIONAL statement and the user then issues a COMMIT
B. when a CREATE INDEX statement is executed successfully in the same session
C. when a COMMIT statement is issued by the same user from another session in the same database instance
D. when the session logs out successfully
E. when a DBA issues a successful SHUTDOWN IMMEDIATE statement and the user then issues a COMMIT
F. when a CREATE TABLE AS SELECT statement is executed unsuccessfully in the same session



Question # 2

Which three actions can you perform by using the ORACLE_DATAPUMP access driver? (Choose three.)

A. Read data from an external table and load it into a table in the database
B. Create a directory object for an external table
C. Execute DML statements on an external table
D. Query data from an external table
E. Read data from a table in the database and insert it into an external table
F. Create a directory object for a flat file



Question # 3

Which three statements are true about performing Data Manipulation Language (DML) operations on a view in an Oracle Database?

A. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains the DISTINCT keyword.
B. Views cannot be used to query rows from an underlying table if the table has a PRIMARY KEY and the PRIMARY KEY columns are not referenced in the defining query of the view.
C. Views cannot be used to add rows to an underlying table if the table has columns with NOT NULL constraints lacking default values which are not referenced in the defining query of the view.
D. The WITH CHECK clause has no effect when deleting rows from the underlying table through the view.
E. Insert statements can always be done on a table through a view.
F. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains aggregating functions.



Question # 4

Which three statements are true about the Oracle join and ANSI join syntax? 

A. The Oracle join syntax supports natural joins.
B. The Oracle join syntax performs less well than the SQL:1999 compliant ANSI join syntax.
C. The Oracle join syntax supports creation of a Cartesian product of two tables.
D. The SQL:1999 compliant ANSI join syntax supports natural joins.
E. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax.
F. The Oracle join syntax only supports right outer joins.
G. The SQL:1999 compliant ANSI join syntax supports creation of a Cartesian product of two tables.



Question # 5

Which two are true about granting privileges on objects? 

A. An object privilege can be granted to other users only by the owner of that object.
B. An object privilege can be granted to a role only by the owner of that object.
C. A table owner must grant the REFERENCES privilege to allow other users to create FOREIGN KEY constraints using that table.
D. The owner of an object acquires all object privileges on that object by default.
E. The WITH GRANT OPTION clause can be used only by DBA users.



Question # 6

Which three statements are true regarding the SQL WHERE and HAVING clauses? (Choose three.)

A. The HAVING clause conditions can have aggregating functions.
B. The HAVING clause conditions can use aliases for the columns.
C. The WHERE and HAVING clauses cannot be used together in a SQL statement.
D. The WHERE clause is used to exclude rows before grouping data.
E. The HAVING clause is used to exclude one or more aggregated results after grouping data.



Question # 7

Which three statements are true reading subqueries? (Choose three.) 

A. A Main query can have many subqueries.
B. A subquery can have more than one main query.
C. The subquery and main query must retrieve date from the same table.
D. The subquery and main query can retrieve data from different tables.
E. Only one column or expression can be compared between the subquery and main query.
F. Multiple columns or expressions can be compared between the subquery and main query.



Question # 8

Examine the data in the CUST_NAME column of the CUSTOMERS table.CUST_NAME-------------------Renske Ladwig Jason Mallin Samuel McCain Allan MCEwen Irene Mikkilineni Julia NayerYou need to display customers' second names where the second name starts with "Mc" or "MC". Which query gives the required output?

A. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)FROM customersWHERE SUBSTR(cust_name, INSTR(cust_name,' ')+1) LIKE INITCAP('MC%');
B. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)FROM customersWHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1))='Mc';
C. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)FROM customersWHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1)) LIKE 'Mc%';
D. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)FROM customersWHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1)) = INITCAP('MC%');



Question # 9

Which statement adds a column called SALARY to the EMPLOYEES table having 100 rows, which cannot contain null?

A. ALTER TABLE EMPLOYEESADD SALARY NUMBER(8,2) DEFAULT 0 NOT NULL;
B. ALTER TABLE EMPLOYEESADD SALARY NUMBER(8,2) DEFAULT CONSTRAINT p_nn NOT NULL;
C. ALTER TABLE EMPLOYEESADD SALARY NUMBER(8,2) DEFAULT NOT NULL;
D. ALTER TABLE EMPLOYEESADD SALARY NUMBER(8,2) NOT NULL;



Question # 10

Which two statements are true regarding the EXISTS operator used in the correlated subqueries? (Choose two.)

A. The outer query stops evaluating the result set of the inner query when the first value is found.
B. It is used to test whether the values retrieved by the inner query exist in the result of the outer query.
C. It is used to test whether the values retrieved by the outer query exist in the result set of the inner query.
D. The outer query continues evaluating the result set of the inner query until all the values in the result set are processed.



Question # 11

Which statement is true regarding the SESSION_PRIVS dictionary view?

A. It contains the object privileges granted to other users by the current user session.
B. It contains the system privileges granted to other users by the current user session.
C. It contains the current object privileges available in the user session.
D. It contains the current system privileges available in the user session.



Question # 12

Which statement is true regarding the USING clause in table joins? (Choose two.) 

A. It can be used to join a maximum of three tables.
B. It can be used to access data from tables through equijoins as well as nonequijoins.
C. It can be used to join tables that have columns with the same name and compatible data types.
D. It can be used to restrict the number of columns used in a NATURAL join.



Question # 13

You must create a table for a banking application.One of the columns in the table has these requirements: A column to store the duration of a short team loanThe data should be stored in a format supporting DATE arithmetic with DATE datatypes without using conversion functions.The maximum loan period is 30 days.Interest must be calculated based on the number of days for which the loan remains unpaid.Which data type would you use?

A. DATE
B. NUMBER
C. TIMESTAMP
D. INTERVAL DAY TO SECOND
E. INTERVAL YEAR TO MONTH



Question # 14

Which two statements are true regarding the execution of the correlated subqueries? (Choose two.) 

A. The nested query executes after the outer query returns the row.
B. The nested query executes first and then the outer query executes.
C. The outer query executes only once for the result returned by the inner query.
D. Each row returned by the outer query is evaluated for the results returned by the inner query.



Question # 15

Which statement is true about an inner join specified in the WHERE clause of a query? 

A. It must have primary-key and foreign-key constraints defined on the columns used in the join condition.
B. It requires the column names to be the same in all tables used for the join conditions.
C. It is applicable for equijoin and nonequijoin conditions.
D. It is applicable for only equijoin conditions.



Question # 16

Which three statements are true regarding subqueries? (Choose three.) 

A. Multiple columns or expressions can be compared between the main query and subquery.
B. Subqueries can contain ORDER BY but not the GROUP BY clause.
C. Main query and subquery can get data from different tables.
D. Subqueries can contain GROUP BY and ORDER BY clauses.
E. Main query and subquery must get data from the same tables.
F. Only one column or expression can be compared between the main query and subquery.



Question # 17

Which statement is true about the INTERSECT operator used in compound queries?

A. INTERSECT is of lower precedence than UNION or UNION ALL.
B. Multiple INTERSECT operators are not possible in the same SQL statement.
C. It ignores NULLs.
D. It processes NULLs in the selected columns.



Question # 18

On your Oracle 12c database, you invoked SQL *Loader to load data into the EMPLOYEES table in the HR schema by issuing the following command: $> sqlldr hr/hr@pdb table=employees Which two statements are true regarding the command? (Choose two.)

A. It succeeds with default settings if the EMPLOYEES table belonging to HR is already defined in the database.
B. It fails because no SQL *Loader data file location is specified.
C. It fails if the HR user does not have the CREATE ANY DIRECTORY privilege.
D. It fails because no SQL *Loader control file location is specified.



Question # 19

The CUSTOMERS table has a CUST_CREDIT_LIMIT column of data type NUMBER. Which two queries execute successfully?

A. SELECT NVL (cust_credit_limit * .15, ‘Not Available’) FROM customers;
B. SELECT TO_CHAR(NVL(cust_credit_limit * .15, ‘Not Available’)) FROM customers;
C. SELECT NVL(TO_CHAR(cust_credit_limit * .15), ‘Not Available’) FROM customers;
D. SELECT NVL2(cust_credit_limit, TO_CHAR(cust_credit_limit * .15), ‘Not Available’) FROM customers;
E. SELECT NVL2 (cust_credit_limit * .15, ‘Not Available’) FROM customers;



Question # 20

Which statement is true about SQL query processing in an Oracle database instance? (Choose the best answer.) 

A. During parsing, a SQL statement containing literals in the WHERE clause that has been executed by any session and which is cached in memory, is always reused for the current execution.
B. During execution, the Oracle server may read data from storage if the required data is not already in memory.
C. During row source generation, rows that satisfy the query are retrieved from the database and stored in memory
D. During optimization, execution plans are formulated based on the statistics gathered by the database instance, and the lowest cost plan is selected for execution



Question # 21

Which three statements are true regarding subqueries? (Choose three.) 

A. The ORDER BY Clause can be used in a subquery.
B. A subquery can be used in the FROM clause of a SELECT statement.
C. If a subquery returns NULL, the main query may still return rows.
D. A subquery can be placed in a WHERE clause, a GROUP BY clause, or a HAVING clause.
E. Logical operators, such as AND, OR and NOT, cannot be used in the WHERE clause of a subquery.



Question # 22

In the PROMOTIONS table, the PROMO_BEGIN_DATE column is of data type DATE and the default date format is DD-MON-RR. Which two statements are true about expressions using PROMO_BEGIN_DATE contained a query?

A. PROMO_BEGIN_DATE – 5 will return a date.
B. PROMO_BEGIN_DATE – SYSDATE will return a number.
C. TO_NUMBER(PROMO_BEGIN_DATE) – 5 will return a number.
D. TO_DATE(PROMO_BEGIN_DATE * 5) will return a date.
E. PROMO_BEGIN_DATE – SYSDATE will return an error.



Question # 23

These are the steps for a correlated subquery, listed in random order:The WHERE clause of the outer query is evaluated.A candidate row is fetched from the table specified in the outer query.This is repeated for the subsequent rows of the table, until all the rows are processed.Rows are returned by the inner query, after being evaluated with the value from the candidate row in theouter query.Which is the correct sequence in which the Oracle server evaluates a correlated subquery?

A. 2, 1, 4, 3
B. 4, 1, 2, 3
C. 4, 2, 1, 3
D. 2, 4, 1, 3



Question # 24

Which two statements are true about date/time functions in a session where NLS_DATE_FORMAT is set to DD-MON-YYYY HH24:MI:SS? 

A. CURRENT_TIMESTAMP returns the same date as CURRENT_DATE.
B. CURRENT_TIMESTAMP returns the same date and time as SYSDATE with additional details of fractional seconds
C. SYSDATE and CURRENT_DATE return the current date and time set for the operating system of the database server.
D. SYSDATE can be used in expressions only if the default date format is DD-MON-RR.
E. SYSDATE can be queried only from the DUAL table.
F. CURRENT_DATE returns the current date and time as per the session time zone.



Question # 25

Which two are true about the WITH GRANT OPTION clause? 

A. The grantee must have the GRANT ANY OBJECT PRIVILEGE system privilege to use this option.
B. It can be used when granting privileges to roles.
C. It cannot be used to pass on privileges to PUBLIC by the grantee.
D. It can be used for system and object privileges.
E. It can be used to pass on privileges to other users by the grantee.
F. The grantee can grant the object privilege to any user in the database, with or without including this option.



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