Table of contents
1.
Introduction
2.
About Oracle
3.
Oracle Interview Process
3.1.
Online Application
3.2.
Initial Screening
3.3.
Aptitude and Technical Test
3.4.
Technical Interviews
3.5.
Managerial Round
3.6.
HR Interview
3.7.
Final Offer
4.
Basic Oracle Interview Questions
4.1.
1. Using which language is the Oracle database developed?
4.2.
2. What is tablespace with respect to the Oracle database?
4.3.
3. Define the Oracle table.
4.4.
4. Give uses of a control file.
4.5.
5. Differentiate between VARCHAR & VARCHAR2?
4.6.
6. Differentiate between a hot and cold backup in Oracle and tell about their benefits.
4.7.
7. Define various Oracle database objects.
4.8.
8. Define COALESCE function?
4.9.
9. Tell about the various constraints in Oracle.
4.10.
10. Describe the Redo Log file mirroring?
4.11.
11. Differentiate between SQL and iSQL*Plus?
4.12.
12. In SQL queries, what is the purpose of the double ampersand (&&)? Could you give an example?
4.13.
13. Describe the temporal data types in Oracle.
5.
Intermediate Oracle Interview Questions
5.1.
14. Write code to display row numbers with records.
5.2.
15. Describe the save point in the Oracle database.
5.3.
16. Differentiate between PL SQL and SQL?
5.4.
17. Describe the order of precedence which is used in executing SQL statements?
5.5.
18. Describe the uses of ANALYZE command.
5.6.
19. Explain about types of snapshots.
5.7.
20. What is the definition of a transaction? Describe the most common errors that can occur during the execution of any transaction.
5.8.
21. In Oracle, what is a bulk copy or BCP?
5.9.
22. In SQL, what is locking? What are the many types of it?
5.10.
23. In a table, what is the DEFAULT option?
5.11.
24. Differentiate between Truncate and Delete?
5.12.
25. Define constraints and their types.
6.
Advanced Oracle Interview Questions
6.1.
26. How many memory layers does Oracle shared pool have?
6.2.
27. Define Discard File.
6.3.
28. Where are global variables declared in Oracle?
6.4.
29. In Oracle, what do you mean by recursive hints?
6.5.
30. Explain Oracle’s RAW Datatype.
6.6.
31. What are the many sorts of Oracle form modules?
6.7.
32. Describe the data type of the dual table.
6.8.
33. What are the differences between Primary Key and Unique Key?
6.9.
34. What are recursive hints in Oracle?
6.10.
35. What limitations do DML operations on Views have?
7.
Oracle Interview Questions for Experienced
7.1.
1. How does Oracle handle transaction control?
7.2.
2. What is Oracle RAC, and how does it work?
7.3.
3. Can you explain Oracle's Data Guard?
7.4.
4. What are the different types of indexes in Oracle?
7.5.
5. How does Oracle manage memory in the SGA (System Global Area)?
7.6.
6. What is Oracle's Automatic Storage Management (ASM)?
7.7.
7. Can you describe Oracle's Undo Tablespace?
7.8.
8. What is the difference between a data block, an extent, and a segment?
7.9.
9. How do you use Oracle’s Flashback Technology?
7.10.
10. Explain Oracle’s Partitioning feature.
7.11.
11. What are Oracle hints, and how do they work?
7.12.
12. How does Oracle handle deadlocks?
7.13.
13. Can you explain Oracle’s Advanced Queuing (AQ)?
7.14.
14. What is Oracle’s Multitenant Architecture?
7.15.
15. How does Oracle’s Resource Manager work?
8.
Frequently Asked Questions
8.1.
What's the most efficient technique to get data from a table?
8.2.
What does a Candidate Key entail?
8.3.
Define the attributes of the Cursor.
9.
Conclusion
Last Updated: Aug 31, 2024
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Oracle Interview Questions

Author Gurleen Kaur
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Introduction

Oracle is a leading global provider of database software and technology. If you are preparing for an Oracle interview, you need to have a strong understanding of database concepts, SQL, and Oracle-specific features. 

Oracle Interview Questions

In this article, we will cover some of the most commonly asked Oracle interview questions to help you prepare effectively and increase your chances of success.

About Oracle

Oracle is one of America's largest global computer technology businesses, with headquarters in Austin, Texas. Oracle sells cloud-engineered solutions, Database software and technologies, and enterprise software, focusing on its database management systems.

Oracle is the second-largest software corporation in terms of sales and market capitalization. One of the critical reasons for Oracle's growing popularity in the IT business (its high-quality products) is its great work culture and ideals. As a software developer, you want to strike a healthy work-life balance, and Oracle is known for it.

We have collected many Oracle interview questions. These questions will help you crack the Oracle interview and land your dream job. The following section will discuss some of the most common oracle interview questions. These interview questions will also help in understanding various concepts of Oracle.

Oracle Interview Process

The Oracle interview process is thorough and designed to assess both your technical skills and your problem-solving abilities.

Online Application

  • Begin by submitting your application through Oracle’s official career portal. This typically includes your resume, cover letter, and any other required documents. Ensure that your resume highlights relevant skills and experiences that match the job description.

Initial Screening

  • After applying, Oracle's HR team will review your application. If your profile matches their criteria, you will be contacted for an initial screening. This is usually a phone or video interview where the recruiter will assess your basic qualifications, career goals, and alignment with Oracle's values.

Aptitude and Technical Test

  • You may be required to take an online aptitude test that assesses logical reasoning, quantitative skills, and sometimes basic technical knowledge. For technical roles, this might be followed by a coding test or technical assessment to evaluate your proficiency in programming and problem-solving skills.

Technical Interviews

  • If you pass the initial tests, you will have one or more technical interviews. These interviews focus on your expertise in areas like databases, programming, system design, and problem-solving. Be prepared to answer in-depth questions and solve coding problems on a whiteboard or coding platform.

Managerial Round

  • In this round, you’ll likely meet with the hiring manager. This interview will focus on your experience, how you approach work challenges, and your fit within the team and company culture. You may also be asked scenario-based questions to assess your decision-making and leadership abilities.

HR Interview

  • The final interview is usually with an HR representative. This round covers behavioral and situational questions, salary negotiations, and other formalities. HR will also ensure that you understand Oracle’s work environment, benefits, and expectations.

Final Offer

  • If you successfully pass all interview stages, Oracle will extend an offer. You will receive details on compensation, benefits, and other employment terms. After accepting the offer, you'll begin the onboarding process.

This structured process ensures that Oracle selects candidates who are not only technically proficient but also a good fit for their company culture.

Basic Oracle Interview Questions

1. Using which language is the Oracle database developed?

It is developed using the C language.

2. What is tablespace with respect to the Oracle database?

It is the logical storage unit of an Oracle database. It's not more than a collection of linked logical structures. Data is logically saved in Oracle tablespaces and physically saved in data files associated with those tablespaces.

oracle database

3. Define the Oracle table.

It is the basic unit of data storage in Oracle. It has rows and columns which store all the accessible data.

4. Give uses of a control file.

The uses of the control file are

  • Recovery of the database
  • The control file identifies the database and redo log files that must be opened for database operations to occur when an ORACLE database instance is launched.

5. Differentiate between VARCHAR & VARCHAR2?

The Oracle data type Varchar and Varchar2 are used to store variable-length character strings. 

To highlight the significant distinctions between them, check the table below-

VARCHAR VARCHAR2
stores characters up to 2000 bytes stores characters up to 4000 bytes
Even if al the characters defined during the declaration are not used, it will keep the space.  The unused space is released. 

6. Differentiate between a hot and cold backup in Oracle and tell about their benefits.

HOT Backup:

It is performed while the database is live; a hot backup is also called as an online backup. Some websites can't shut down their databases while performing backups since they are in use 24 hours a day, seven days a week.

COLD Backup:

If the database is shut down using the SHUTDOWN normal command, a cold backup (also known as an offline backup) is done. If a database is suddenly shut down due to an unknown condition, it should be reopened in RESTRICT mode before being shut down with the NORMAL option.

For a complete cold backup, the following files must be backed up.

All data files, control files, online redo log files (optional), and the init.ora files are required.

7. Define various Oracle database objects.

The following is a list of Oracle database objects and their descriptions:

Tables: Tables are a collection of items arranged vertically and horizontally.

Tablespaces: In Oracle, a tablespace is a logical storage unit.

Views: It is a virtual table that has been created by combining data from one or more tables.

Indexes: Indexes are a performance-tuning technique for processing records.

Synonyms: Tables have names that are synonyms.

8. Define COALESCE function?

It is used to return the value in the list that is set to be not null. It will return NULL if all of the values in the list are null.

Coalesce(value1, value2, value3,value4 ,…)

9. Tell about the various constraints in Oracle.

NULL: It denotes that a column may contain NULL values.

NOT NULL: This specifies that a column cannot have any NULL values.

CHECK:  Verify that the values in the supplied column fulfill the specified requirements.

DEFAULT:  This indicates that the value has been set to the default value.

10. Describe the Redo Log file mirroring?

  • Mirroring is the process of having a copy of redo log files.
  • It's accomplished by putting together a collection of log files. This guarantees that LGWR sends them to all members of the current on-line redo log group automatically.
  • In the event that one of the groups fails, the database will immediately transition to the next group. It has a negative impact on performance.        

11. Differentiate between SQL and iSQL*Plus?

The following table shows the difference between SQL and iSQL*Plus:

SQL iSQL*Plus
It is a Language It is an Environment
The number column headings are right-justified, and the character and date column headings are left-justified. The Default heading justification is in the Centre.
It Cannot be Abbreviated (short forms) It can be Abbreviated
It does not have a continuation character It has a dash (-) as a continuation character if the command is longer than one line
Uses Functions to perform some formatting It uses commands to format data

12. In SQL queries, what is the purpose of the double ampersand (&&)? Could you give an example?

If you wish to reuse the variable value without having to prompt the user each time, use "&&."

For ex: 

Select stuid, sname, && column_name from student order by &column_name;

13. Describe the temporal data types in Oracle.

Oracle supports the temporal data types listed below-

Date Data Type: Various Date Formats

TimeStamp Data Type: Various Time Stamp Formats

Interval Data Type: The time between two dates.

Intermediate Oracle Interview Questions

14. Write code to display row numbers with records.

The format will be:

Select rowno, <fieldnames> from table;

This query will return row numbers and field values from the specified table.

15. Describe the save point in the Oracle database.

Save points are used to divide a large transaction into smaller portions. It allows for the reversal of a transaction. A total of five save points are allowed. It's also where we save our data; if something goes wrong, you can go back to where you saved your SAVEPOINT.

16. Differentiate between PL SQL and SQL?

The following table shows the difference between SQL and PL/SQL:

Comparison SQL PL/SQL
Execution Only single command at a time Complete block of code
Application The source of data to be displayed Data acquired by SQL is used to create applications
Structures include DML and DDL based commands and queries It includes procedures, functions, etc.
Recommended while Doing CRUD operations on data Creation of applications to display data obtained using SQL
Compatibility with each other It can be embedded into PL/SQL It can't be embedded in SQL

17. Describe the order of precedence which is used in executing SQL statements?

The following table shows the order of precedence which is used in executing SQL statements:

Evaluated Order Operators
1 Arithmetic operators (*, /, +, -)
2 Concatenation operators (
3 Comparison conditions
4 Is[NOT] NULL, LIKE, [NOT] IN
5 [NOT] BETWEEN
6 NOT Logical condition
7 AND logical condition
8 OR logical condition

18. Describe the uses of ANALYZE command.

The ANALYZE command is used to perform the following functions on an index, table, or cluster:

- It helps in the dentification of migrated and chained table or cluster rows.

- It facilitates validating the object's structure.

- It aids in the collection of statistics about the optimizer's objects. After that, they're saved in the data dictionary.

- It aids in the deletion of object statistics from the data dictionary.

19. Explain about types of snapshots.

Snapshots are divided into two categories:

Simple snapshots - based on a query without GROUP BY clauses, CONNECT BY clauses, JOINs, sub-queries, or operations snapshots.

Complex snapshots, which include at least one of the preceding.

20. What is the definition of a transaction? Describe the most common errors that can occur during the execution of any transaction.

A transaction is a logical unit of work comprising a collection of DML statements. The following are some common errors that can occur during the execution of any transaction:

  • Constraints are being broken.
  • Mismatch in data types.
  • The value is too large for the column.
  • The server goes down, or the system crashes.
  • The session was a complete failure.
  • The process of locking takes place.

21. In Oracle, what is a bulk copy or BCP?

Bulk copy, often known as BCP in Oracle, is a method of importing or exporting data from tables and views without copying the data's structure. The key benefit of BCP is that it has a quick process for copying data and that you can quickly backup your data.

22. In SQL, what is locking? What are the many types of it?

Concurrent transactions can't interact destructively if they're locked. Locks remained in place until Commit or Rollback was performed. The following are examples of locking mechanisms:

Implicit Locking: Except for SELECT, all SQL statements are subject to implicit locking.

Explicit Locking: This can be done explicitly by the user.

In addition, there are two locking options:

Exclusive: Other users can't utilize it because it's exclusive.

Share: Allows other users to see what you're working on.

23. In a table, what is the DEFAULT option?

The DEFAULT option can be used to set a default value for a column. If a row is added without a value for a column, this option prevents null values from entering the column. The value of the DEFAULT column can be a literal, an expression, or a SQL function like SYSDATE or USER, but it can't be the name of another column or a pseudo column like NEXTVAL or CURRVAL.

24. Differentiate between Truncate and Delete?

The main difference between Truncate and Delete is as below:

SQL Truncate SQL Delete
It removes all rows from a table and releases the storage space used by that table. It removes all rows from a table but does not release the storage space used by that table.
It is faster. It is slower.
It is a DDL statement and cannot be rolled back. It is a DDL statement and can be rolled back.
Triggers do not fire on TRUNCATE. Triggers fire on DELETE.

25. Define constraints and their types.

If there are dependencies, constraints are employed to prevent improper data entry or deletion. At the table level, constraints impose rules. Constraints can be added to a table simultaneously as the table or after it has been built. At the column or table level, constraints can be defined. The USER-CONSTRAINTS data dictionary table can be used to see the constraints defined for a certain table. Except for NOT NULL, which can only be defined at the column level, any constraint can be defined at the table level. There are five different sorts of constraints:

  • Not Null Constraint
  • Unique Key Constraint
  • Primary Key Constraint
  • Foreign Key Constraint
  • Check Key Constraint.

Advanced Oracle Interview Questions

26. How many memory layers does Oracle shared pool have?

There are two layers in Oracle shared pools:

  • Data dictionary 
  • Cache library cache

27. Define Discard File.

It is as follows:

  • .dsc is the file extension.
  • Using the discard file clause, we must provide the discard file within the control file.
  • The discard file additionally stores reflected records based on the control file's when clause condition. In the table clause, this condition must be met.

28. Where are global variables declared in Oracle?

We only declare global variables in Oracle's Package Specification.

29. In Oracle, what do you mean by recursive hints?

The number of times a dictionary table is continually called by various processes can be defined as a recursive hint. The tiny size of the data dictionary cache causes recursive hints.

30. Explain Oracle’s RAW Datatype.

Variable-length binary data or byte string values are stored in Oracle using the RAW datatype. A raw's maximum size in a particular table is 32767 bytes.

It's easy to get mixed up on when to use RAW, varchar, and varchar2. Let me highlight the fundamental distinctions between them. When RAW data is transmitted to various systems, PL/SQL can not recognize the data type and cannot do any conversions. This type of data can only be queried or added to a table.

31. What are the many sorts of Oracle form modules?

The following are the many Oracle form modules:

  • Menu module
  • Pl/SQL Library module
  • Form module
  • Object Library module

32. Describe the data type of the dual table.

In an Oracle database, the DUAL table is a one-column table. DUMMY is a single VARCHAR2(1) column in the table with the value 'X’.

33. What are the differences between Primary Key and Unique Key?

The following table shows the difference between Primary Key and Unique Key:

Unique key Primary key
There can be more than one unique key in the table. Only one primary key is present in a table.
It can store NULL values. It cannot store NULL values.
It uniquely identifies each value in a column. It uniquely identifies each row in the table.

34. What are recursive hints in Oracle?

The recursive hint refers to the number of times a dictionary table is called repeatedly by different processes. The small size of the data dictionary cache causes recursive hints.

35. What limitations do DML operations on Views have?

Some of the limitations of DML operations on Views:

If the View contains the following, you can't DELETE a row:

  • Group Functions
  • A Group By clause
  • The Distinct Keyword
  • The Pseudo column ROWNUM Keyword.

If a View contains the following, you won't be able to MODIFY data in it:

  • Group Functions
  • A Group By clause
  • The Distinct Keyword
  • The Pseudo column ROWNUM Keyword.
  • Columns defined by expressions (Ex; Marks * 50)

Oracle Interview Questions for Experienced

1. How does Oracle handle transaction control?

Oracle handles transaction control using a set of SQL statements like COMMIT, ROLLBACK, and SAVEPOINT. These commands allow you to manage transactions by saving changes, undoing changes, or setting points in a transaction to which you can roll back. For example, COMMIT makes all changes made during the transaction permanent, while ROLLBACK reverts them. SAVEPOINT creates a point within a transaction that you can roll back to without affecting preceding actions.

2. What is Oracle RAC, and how does it work?

Oracle Real Application Clusters (RAC) is a technology that allows multiple computers to run Oracle RDBMS software simultaneously while accessing a single database, providing clustering. It helps in improving availability and scalability. RAC works by distributing the processing load across several nodes, ensuring that if one node fails, the others continue to handle the workload without disruption.

3. Can you explain Oracle's Data Guard?

Oracle Data Guard is a disaster recovery and data protection solution that maintains standby databases as copies of the production database. It automates the process of updating standby databases and ensures that data is synchronized. If the primary database fails, Data Guard can switch the standby database to take over, minimizing downtime and data loss.

4. What are the different types of indexes in Oracle?

Oracle supports several types of indexes, including:

  • B-tree indexes: The most common type, used for a wide range of queries.
  • Bitmap indexes: Best for columns with a low cardinality (few distinct values).
  • Unique indexes: Ensure that all values in the indexed column are unique.
  • Composite indexes: Indexes created on multiple columns.
  • Function-based indexes: Created based on expressions or functions.

5. How does Oracle manage memory in the SGA (System Global Area)?

The SGA is a shared memory area that contains data and control information for an Oracle instance. Oracle manages memory in the SGA by dividing it into several components, including the database buffer cache, shared pool, redo log buffer, and large pool. Each component has a specific role, such as caching data blocks, storing SQL execution plans, or managing redo logs. Oracle automatically adjusts the size of these components based on the workload to optimize performance.

6. What is Oracle's Automatic Storage Management (ASM)?

Oracle's Automatic Storage Management (ASM) is a powerful storage management solution designed to optimize the handling of Oracle database files. ASM integrates both filesystem and volume management functionalities, streamlining the storage management process for Oracle databases.

With ASM, database administrators benefit from automated storage management tasks that include data distribution across multiple disks, providing built-in redundancy, and enhancing overall performance. This automation reduces the complexity of storage management, as it removes the need for third-party filesystems or volume managers.

ASM simplifies the allocation and balancing of storage resources, ensuring that data is evenly distributed to maximize performance and reliability. By managing disk groups and providing features like automatic rebalancing and failover capabilities, ASM contributes to a more efficient and resilient storage infrastructure. This allows DBAs to focus on other critical aspects of database administration, knowing that their storage is being managed effectively and efficiently.

7. Can you describe Oracle's Undo Tablespace?

The Undo Tablespace in Oracle stores undo records, which are used to roll back transactions, maintain read consistency, and support Oracle’s flashback features. Unlike traditional rollback segments, undo tablespaces are automatically managed by Oracle, making it easier to manage large transactions. The size and retention of the undo data can be controlled to optimize performance and recovery.

8. What is the difference between a data block, an extent, and a segment?

In Oracle, these three terms represent different levels of data storage management within the database:

Data Block: The smallest unit of storage in Oracle is the data block. It is the basic unit where data is read from or written to disk. Each data block contains a fixed amount of data (usually between 2 KB and 32 KB) and includes space for storing rows of data, as well as metadata for managing those rows.

Extent: An extent is a collection of contiguous data blocks. It is used to allocate space for a database object. When a table or index requires additional space, Oracle allocates extents to ensure the data is stored in a contiguous space, which improves performance by reducing the need for frequent disk I/O operations.

Segment: A segment is a collection of extents that are allocated for a specific database object, such as a table, index, or rollback segment. Each segment is managed independently and grows as needed by acquiring more extents. Segments help organize and manage storage by grouping extents together for a specific purpose or object.

These structures work together to efficiently manage data storage, providing a scalable and organized approach to handling the storage needs of the database.

9. How do you use Oracle’s Flashback Technology?

Oracle's Flashback Technology provides advanced capabilities for recovering and querying data to a previous state without relying on traditional backups. Flashback Query allows users to view data as it existed at a specific point in time by using the AS OF clause in SQL queries. This feature is useful for retrieving lost or altered data due to errors. Flashback Table enables the restoration of entire tables to their previous state, which is valuable for undoing accidental changes or corruption. Flashback Database offers the ability to roll back the entire database to a past point in time, and Flashback Drop helps recover tables that were accidentally dropped by querying the recycle bin. These features collectively enhance data recovery and minimize downtime.

10. Explain Oracle’s Partitioning feature.

Partitioning in Oracle involves dividing a large table or index into smaller, more manageable pieces called partitions. Each partition can be managed and accessed independently, which improves query performance and simplifies data management. Oracle supports various partitioning methods, such as range, list, and hash partitioning, to optimize how data is distributed and accessed.

11. What are Oracle hints, and how do they work?

Oracle hints are directives that can be added to SQL statements to influence the optimizer’s choice of execution plan. They are used to improve performance by suggesting how the database should execute a query. Hints can be used to specify the join method, choose a particular index, or control parallel execution. However, hints should be used with caution, as they can sometimes lead to suboptimal plans.

12. How does Oracle handle deadlocks?

Oracle effectively manages deadlocks through an automatic detection and resolution process. A deadlock occurs when two or more transactions are each waiting for resources held by the other, causing a standstill. This situation can lead to system performance degradation or even halt the system if not addressed properly.

Oracle's deadlock detection mechanism operates as follows:

  • Detection: Oracle continuously monitors the system for potential deadlock conditions. It uses an internal algorithm that tracks transactions and their resource locks, identifying cycles in the lock dependency graph. A cycle indicates a deadlock where transactions are interdependent on each other’s resources.
     
  • Resolution: Once a deadlock is detected, Oracle's system intervenes by automatically rolling back one of the transactions involved in the deadlock. This rollback is performed based on a cost-based decision, where the system evaluates which transaction should be rolled back to minimize the impact on overall system performance.
     
  • Recovery: After rolling back a transaction, Oracle releases the held resources, allowing the other transactions to proceed. The rolled-back transaction can then be retried by the application if needed.
     

By handling deadlocks in this way, Oracle ensures that transactions can continue without the system hanging indefinitely, maintaining overall system efficiency and reliability.

13. Can you explain Oracle’s Advanced Queuing (AQ)?

Oracle Advanced Queuing (AQ) is a robust messaging technology embedded within the Oracle Database that enables asynchronous communication between applications. AQ facilitates the creation and management of message queues, which temporarily store messages until they are processed.

Messages in these queues are stored persistently in the database, ensuring their durability even in the event of system failures. AQ supports multiple consumers for a single queue, which enhances scalability and load distribution. Additionally, it allows for message transformation, meaning messages can be modified or enriched before being delivered to the consumers.

Integration with other Oracle features, such as Oracle Streams and Oracle Real Application Clusters (RAC), further extends AQ’s capabilities, making it a valuable tool for building distributed and reliable systems. By enabling asynchronous processing, AQ helps improve system responsiveness and manage complex messaging needs efficiently.

14. What is Oracle’s Multitenant Architecture?

Oracle's Multitenant Architecture allows multiple databases to run under a single Oracle instance. These databases, called pluggable databases (PDBs), share the instance's resources but operate independently. This architecture simplifies database management, improves resource utilization, and provides greater flexibility in consolidating databases.

15. How does Oracle’s Resource Manager work?

Oracle's Resource Manager is a tool that manages CPU and resource allocation among database users and sessions. It allows DBAs to define resource plans that prioritize critical workloads and limit the resources available to less important tasks. This ensures that system resources are used efficiently and that high-priority operations are not impacted by lower-priority activities.

Frequently Asked Questions

What's the most efficient technique to get data from a table?

Using ROWID in the SQL query is the easiest approach to get the data.

What does a Candidate Key entail?

Candidate Key refers to the columns in a table that can be used as a Primary Key.

Define the attributes of the Cursor.

In Oracle, each Cursor has properties that enable an application programme to test the Cursor's state. The properties can be used to see if the cursor is open or closed if found and to count the number of rows.

Conclusion

This article covers fundamental Oracle interview questions for both freshers and experienced candidates. For more preparation, explore our guides on  Android interview questionspython interview questions, DataStage Interview Questions, and other topics to boost your interview skills. Don’t forget to upvote our blog to support fellow professionals in their career growth.

We hope you were able to find answers to the most often requested Oracle Interview questions in this article. The solutions provided to the questions above are also helpful in learning the fundamentals of Oracle.

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