8 Things Every Beginner Oracle DBA Should Know

If you are contemplating a career as an Oracle DBA or want to hire an Oracle DBA, we've got a quick read for you!

Many Organizations rely on Oracle database administrators to maintain their Databases and manage their data securely and efficiently, with no room for error. Know what you should know to become a successful Oracle DBA!

What is the Oracle Database Management System, and why is it important for organizations?

An Oracle Database is a multi-model database management system commonly used for running online transaction processing, data warehousing, mixed database workloads. Organizations use Database Management Systems to store and retrieve voluminous and complex data that cannot be managed by just maintaining spreadsheets. Databases are highly scalable & designed to communicate with other applications making them suitable for the web.

What is the role of an Oracle DBA? Is it crucial?

An Oracle DBA role includes capacity planning, evaluates database server hardware, installation, configuration, design, data migration, performance monitoring, security, backups, troubleshooting & data recovery. So yes, it is crucial. An Oracle DBA is responsible for maintaining the data integrity of an organization.

What are the prerequisites for becoming an Oracle DBA?

One of the main prerequisites of becoming an Oracle DBA is acquiring a bachelor's degree in computer programming. However, that is not enough; an Oracle DBA needs to be highly skilled to excel in this field. Advanced knowledge of computing and business environments is key to becoming a successful Oracle DBA.

Are you an aspiring Oracle DBA or planning to hire one?

If yes, let us help you become well-versed with the basics of an Oracle DBA's roles and responsibilities. We have enlisted eight aspects of Oracle Database Management you should ace to become a successful Oracle DBA.

Installation and Configuration

Knowing the fundamentals like the Oracle installation & configuration procedures is key to becoming a successful Oracle DBA. Practical experience is a plus. The installing process for Oracle across different OS can be very different, with distinct peculiarities. Try to grasp as much knowledge and practical experience you can.

Monitoring and Tuning

Ensuring the error-free performance of an Oracle Database is pivotal. An Oracle DBA needs to understand & detect the possibility of any errors & figure out necessitate solutions.

Back up and Recovery

Ensuring continuity and availability of the database is an Oracle DBA's prime responsibility. Many organizations use KPIs based on the mean availability time between failures of evaluating the performance of DBAs. Mastering the skills required for ensuring database availability is crucial.

Basic understanding of database security issues

As an Oracle DBA, knowing the intricacies of security issues can give you an advantageous edge. Make yourself aware of the nominal particularities like roles, profiles, user accounts, objects, system-level privileges & SQL injection.

Database Design

Acquire knowledge about the basics of database design to eliminate the possibility of errors and avoid costly modifications in the structure. Understand the concept of database design to know what data must be stored and how the data elements interrelate.

Good Knowledge of DBMS Series of Packages

Understand the purpose behind the DBS series of packages that are available with Oracle. These packages edify Oracle's functionality and make it possible for a DBA to use PL/SQL with standard features. Fill in on the distinct packages and become well-versed with their functionality to gain an edge.

Command over SQL and PL/SQL

Gain command over SQL & PL/SQL to create jobs or stored procedures. It helps one to query underlying system tables to improve efficiency and become a successful DBA. Familiarizing oneself with PL/SQL will also enable a DBA to read scripts and fine-tune queries.

Wizards & GUI vs. command line

To ensure increased productivity and quicker results, become proficient in Wizards and GUI tools bundled with DBMS. An expert Oracle BBA should also know how to effectively use the PowerShell command or write raw SQL if the Wizards does not provide the needful support.

If you want to know more about an Oracle DBA, speak with our experts now or visit our website www.abacasys.com

PostgreSQL vs. Oracle: Let’s Compare

Deciding on a Database Management System? Let us help you make an informed decision.

In this blog, we will help you discover the key differences between two of the most accepted Database Management Systems- PostgreSQL & Oracle 

Database Management Systems are primarily categorized as open-sourced and closed-source systems. Open-source Database Management Systems can be accessed and modified by anyone free of cost, unlike closed-source Database Management Systems that are private and inaccessible to everyone except developers and authorized parties. PostgreSQL is an open-sourced DBMS, whereas Oracle is a closed-source DBMS.

Let us help you get a basic understanding of the two DBMS before we delve into the technicalities.

PostgreSQL: Developed by the PostgreSQL Global Development group on 8 July 1996, PostgreSQL is a free open-source relational object-oriented database management system developed by volunteer developers worldwide, emphasizing extensibility and SQL compliance.

Oracle: Developed by Larry Ellison and Bob on 16 June 1977, Oracle is a licensed commercial relational database management system. It is the first database designed for grid computing.

Let us now compare PostgreSQL vs. Oracle, outlining the differences in these SQLs database functionalities, scalability, security, support, costs, etc.


In terms of functionality, the edge PostgreSQL has over Oracle is its ever-evolving and free-of-cost availability. Oracle requires complex ongoing administration. The complexity increases the risk of error which can lead to critical mistakes. PostgreSQL has four levels of possible transactions: Read uncommitted, Read Committed, Repeatable Read & Serializable, whereas Oracle has higher transactions per second. Even though Oracle is more functional than PostgreSQL, it comes with a price.


PostgreSQL is more scalable as it has open-source characteristics. However, for higher scalability in Oracle, one has to spend more on infrastructure to carry out operations. PostgreSQL databases can accommodate enormous volumes of data & incorporates cluster-based storage solutions that allow free expansion. Oracle is better in terms of maintaining data integrity with redo logs. Oracle Enterprise is recommended for high workloads, being highly scalable but costly.


New versions of PostgreSQL with updates are released every year, and minor versions with bug fixes are released every quarter. The release dates are announced in advance to ensure the user's convenience. On the other hand, Oracle releases new versions every 2-4 years.


PostgreSQL allows developers to set permissions by offering roles and inherited roles and supports native SSL to assist in encryption server communications. It also provides additional access controls through SE-PostgreSQL relied on SELinux's security policy.

In terms of security, Oracle has more robust security features. Oracle provides advanced security features that are accessible by paying an additional cost. Oracle offers features like security assessments, data protection, auditing & monitoring. It also allows exceptional isolation solutions between pluggable databases and independent key encryption management.


PostgreSQL has an active community that offers free online support through blogs, emails, code & other channels. There is no helpline number to call during emergencies. You can hire a developer at an affordable price. Third-party support is also available.

Oracle has a helpline number available for emergencies. However, hiring developers as support for hardware and software packages costs approximately 22% of their licensing fees.

Compatibility & Replication

PostgreSQL is compatible with relational databases, including Oracle, while Oracle infrastructure does not offer compatibility with open-source RDBMS. PostgreSQL supports native streaming replication & logical replication, while Oracle supports Oracle GoldenGate, a licensed application for data replications of all kinds.


PostgreSQL supports declarative partitioning, whereas Oracle supports general horizontal partitioning supported by all RDBMS.

Cloud Deployments

PostgreSQL can be deployed on any cloud provider via PostgreSQL hosting solutions available, whereas Oracle can be deployed only on Oracle Cloud & top of the line cloud providers.


PostgreSQL offers innumerable open-source extensions, including PostGIS, CitusDB, pg_repack, etc., whereas Oracle only offers commercial add-ons available for an additional license fee.


PgPool in PostgreSQL Enterprise edition provides superior functionality. It adds nodes dynamically through horizontal scalability options. Databases can be shared across servers via Oracle Real Application Clusters. Real Application Cluster is a built-in feature in Oracle.

Migration Tools

PostgreSQL offers advanced tools to support migration from Oracle, the Ora2PG enables the migration of large projects, and Oracle-FDW moves schemas and data. Orafce ensures function compatibility while PGREPLAY is used to stress test databases. Even though moving Oracle Databases can be time-consuming, Third-party tools like AWS Schema Conversion Tool are available for migrating code.

Oracle's Database Replay & SQL Performance Analyzer in Real Application Testing allows analysis and testing of migration requirements prior to the move. Migration is easier through preparation tools and planning that reduce the time and resources required.

Backup & Recovery

The data recovery process for PostgreSQL is simple. It effectively replaces directories, subdirectories & the WAL files. Oracle's data recovery process is comparatively complex. In PostgreSQL, PGdum and pg_basebackup are reliable database backup solutions. In Oracle, RMAN provides efficient database backup.


PostgreSQL has an advantageous edge of being highly cost-effective. It has no licensing costs. On the other hand, Oracle has separate licenses that you need to purchase to use its specific features. Most of the advanced features Oracle provides are available only in the enterprise edition, which costs.

Supported Operating Systems

PostgreSQL: AIX, HP-UX, Linux, OS X, Solaris, Windows, z/OS

Oracle: FreeBSD, HP-UX, Linux, NetBSD, OpenBSD, OS X, SolarisUnix, Windows

Supported Languages

PostgreSQL: C, C#, C++, Clojure, Cobol, Delphi, Eiffel, Erlang, Fortran, Groovy, Haskell, Java, JavaScript, Lisp, Objective C, OCaml, Perl, PHP, Python, R, Ruby, Scala, Tcl, Visual Basic

Oracle: .Net, C, C++, Delphi, Java, JavaScript (Node.js), Perl, PHP, Python, Tcl

PostgreSQL and Oracle both have their distinct advantages that can help you enhance your business.

If you want to know more about the two and which will suit your business best, speak with our experts now! Abaca has a proficient team of technologically sound developers who can understand your business goals and help you make the right choice.

Rapid Development and Beyond With Oracle APEX

Dependable & Data-centric application development or rapid development? What is your priority?

In the domain of web development, one often has to choose between two equally important aspects, browser-friendly & data-centric web applications or fast development via fast prototyping.

You no longer have to choose since Oracle APEX now gives you the best of both worlds. Web applications are an intricate part of every business in the meantime. Users choose web applications over desktop application due to their responsiveness, i.e., their easy accessibility on desktop or mobile devices alike.

The need for storing & handling data has increased manifolds over the years, which is why database systems are extremely important to ensure an organization's smooth working. Oracle, a distinguished database manufacturer is renowned for the 'Oracle Database' which allows users to read as well as write significant amounts of data. Upon realizing the growing requirement of fast development of web applications, Oracle incepted the online development environment 'Oracle Application Express (APEX)', a no-cost plugin for Oracle Database.

The Amalgam of Development Environment and Database
Oracle APEX is a rapid web application development tool for the Oracle Database. It's a browser-based interface, declarative programming framework which is easy to grasp and empowers you to quickly develop effective and robust applications.

Being browser-based, Oracle APEX is independent of the operating system underneath. Installed on Oracle Database, Oracle APEX has direct access to the corresponding database, which means no persistence layer is required to exchange data between the database and the developed application.

Owning an Oracle Database is a prerequisite of gaining access to Oracle APEX, which is why it is most advantageous for organizations that already operate Oracle Database.

Programming Made Easy
Oracle Database lets one avail packages and functions that equip developers to augment their databases by writing source code with PL/SQL. Invented by Oracle, PL/SQL extends the common SQL functionality with features known from distinct programming languages.

PL/SQL does not require a persistence layer to gain access to the database. In packages and functions, PL/SQL can be integrated with ordinary SQL, enabling an easy & fast way to write impeccable PL/SQL scripts. Oracle APEX has many advantageous edges, it makes developers' lives as easy as possible since there is no need to learn any additional programming or scripting languages. Programmers can use pre-existing technologies like HTML, CSS, JavaScript etc. to design web applications easily.

An Advantageous Headstart - Rapid GUI Prototypes
As a default layout theme for the graphical user interface (consecutively GUI) Oracle APEX comes with the Universal Theme and the Theme Roller as an easy-to-use tool to adapt the Universal Theme individually. There is no need to spend time on the GUI at the very beginning. Thus the developer can directly start with implementing the business logic.

This is the reason why Oracle APEX is feasible to create rapid GUI-Prototypes without logic. Thus prospective customers can get an idea of how their future application will look.

Keeping Up with Globalization
Multilingual applications are gaining momentum rapidly. Acknowledging the hype, Oracle improvised and equipped Oracle APEX with powerful translation utilities to translate entire applications with ease. The default language, the language in which APEX application is originally developed, is translated without effort or error. All the labels, buttons, region titles, every detail is translated.

Maximized Security - Authenticate & Authorize
Oracle has developed a powerful yet easy-to-use approach to secure web applications developed using Oracle APEX. A user must request access to read or edit data, this process is called authentication. Different authentication schemes are applied to ensure complete security. After authentication, the next step is authorization. Authorization schemes manage what permissions a user has. Almost everything in Oracle APEX like pages, regions, items, buttons, validations, processes can be restricted with an authorization scheme.

To sum up, Oracle APEX is a powerful development environment created as a no-cost plugin for Oracle Database. It is ideal for accelerated development and rapid prototyping. Being a powerful yet easy-to-use platform that enables the development of multilingual, secure and high-functioning web applications which are independent of their dimensions.

If you want to know more about Oracle APEX & how it can be used to optimize your organization's functioning, speak with our experts now!

Hire Professional Abaca Oracle Consultants & Migration Experts from Abaca. We’ve successfully developed, implemented and maintained Oracle solutions in numerous environments and industries.

Oracle APEX- A Feature-Rich Development Platform You Should Be Using

Oracle Application Express (APEX) is a low-code, feature-rich, modern & rapid development platform that enables one to build scalable, complex, data-centric web applications.

Being a powerful, easy to support & cost-effective development platform, APEX is used worldwide by renowned enterprises, government departments, educational institutes, NGOs & MSMEs. If you own an Oracle Database, here’s why you should upgrade to APEX now!

In this blog, we’ve listed a few of the innumerable reasons why you should be using Oracle APEX, if you aren't already. Let’s get started!

What Sets Oracle APEX Apart & Why Should You Go For It?

Oracle APEX offers advanced tools you need to be productive, deliver on time, and produce exceptional results for your business.Listed below are the salient features of Oracle APEX that will help you gain a better insight into the subject.

Phenomenal Framework

The APEX Framework uses solid and proven languages like SQL & PL/SQL on the back end & industry-standard components like HTML, CSS, JavaScript for building the user interface.

Custom Authentication & Authorization

In addition to supporting various authentication schemes like LDAP, Database, Single Sign-On, Oracle Access Manager, Custom, etc., APEX enables you to implement custom Authorization Schemes using the built-in components.

Declarative Support for Building Mobile Applications

Oracle APEX provides declarative support for mobile application development. Oracle APEX incorporates jQuery Mobile, a lightweight framework that enables you to create compact & minimalistic websites, to support Mobile Web Application Development. It allows you to include features like page transitions & gestures like swipe, pinch & tap.

Unparalleled Responsiveness

APEX allows you to develop applications edified with a responsive design for optimal viewing on desktops, tablets & smartphones. You can simply do this by selecting predefined themes based on CSS3 & HTML5 that support HTML5 charts & item types such as sliders & toggles.

All-inclusive Development Suite

Oracle APEX is a packaged application that includes an integrated suite of productivity & sample apps that provide point solutions & demonstrate key functionality. The suite encompasses applications for bug tracking, issue logs, checklist management, meeting minutes, group calendar, decision management etc.

RESTful Web Services

APEX has inbuilt support for RESTful web services. The RESTful Web Services Wizard is a set of pages in the SQL Workshop area of Oracle APEX that allows you to create RESTful Web Services. It allows applications to access data & services over the internet using standard web APIs.

Database Integration

Oracle Database is a multi-model database management system facilitated with advanced security, RAC, Spatial, Analytics, Multimedia, XML, etc. APEX developers can leverage these capabilities for their applications by simply using SQL or PL/ SQL APIs directly in the database.

Application Translation & Globalization Support

A single Oracle database instance & Oracle Application Express can support multiple database sessions customized to support distinct languages. Applications are developed in a primary language & can be mapped to a supported target language.

Upgrade your Aging Forms and Reports Application

Upgrade & Modernize your existing Forms and Reports Applications without disrupting the underlying PL/SQL or database code using Oracle APEX wizard-based rapid development in no time & enable it to run on a lightweight browser. You can also move your applications to Oracle Cloud or AWS cloud.

Develop Teams Effortlessly

Oracle APEX has an inbuilt feature allowing team development, i.e., a group of developers can work on a single application, manage features. An exceptional advantage that comes with team development is the ability to set milestones. It helps team members manage time and increase their productivity.


Developers have the advantage of extending Oracle APEX by writing custom authentication and authorization schemes in SQL & PL/SQL. The framework supports plugins, allowing developers to extend the functionality of their applications with reusable or third-party extensions.

In addition to the above-mentioned key features, APEX is also stacked with advantageous features that edify developer productivity including Version Control Support, Error Handling, Oracle Forms Migration Tool, Accessibility, Utility Reports.

Wondering why you have not upgraded to APEX yet? Let us help you!

Creating an Impact in the World of IT & Software Since 2006, Abaca Develops Advanced Solutions using Oracle APEX to Help Businesses attain sustainable growth. To know more about Oracle APEX and its services, speak with our experts now!

Oracle APEX Development in India: It’s Not as Difficult as You Think

Why is Oracle APEX Development is one of the most hyped-up topics of discussion in the world of IT?!

Well, Oracle APEX helps build complex web applications that are compatible with most modern web browsers. Oracle APEX, considered one of the best tools to develop high-performance Applications, is consistently gaining tremendous popularity among developers and business owners alike. Why wouldn’t they?!

It’s a strongly-typed, object-oriented programming language that helps develop compelling Applications with high-functioning features! Oracle APEX enables rapid development of impeccable Applications and allows easy deployment of the solutions across a client’s business. Now that you’re familiar with Oracle APEX Development and its advantageous edge, what’s next!?

  The most important question that follows is where you can access world-class Oracle APEX Development Services?

That’s where we come in, to help you make a well-informed decision. India is unquestionably an ideal choice to consider while searching for Oracle APEX Development service providers. From optimizing a current system or customizing a new dynamic solution, you are promised and delivered unparalleled quality & efficiency.

Oracle Development in India is not as difficult as you think. Despite the time difference, Oracle APEX Developers in India ensure you time & cost-effective service.

  We’ve listed the Top 3 reasons why India should be your Number 1 choice for Oracle APEX Development:

  ★ High-Quality, Low-Cost: We know your priorities! Get maximum quality assurance at a minimal cost. Oracle APEX Developers pay attention to every last detail to develop the perfect App for your business at a negotiable price.

  ★ Time Zone Advantage: As opposed to the unpopular belief, the time difference can be a major plus point for you. For instance, a business based in the US can benefit immensely. Work, a company in a different time zone assigns by the end of the day, can be accomplished by the following morning.

  ★ Managed Team of Experts: Imagine high-quality work being done and delivered timely without having to set up, manage & pay off an entire in-house team! All you need to do is find a proficient team of experts in India & you’ll be all set!

Thinking of a brilliant Oracle APEX Team? Think of us!!

Abacasys has a diligent team of highly talented Oracle APEX Developers that can help you build scalable, compelling & secure enterprise Applications, with world-class features that can be deployed anywhere, at a minimal cost. We provide onsite & offshore services like implementation, integration, upgrade, and remote application support.

Contact us to gain access to an Incredible team of Oracle APEX Developers in India Now!

Oracle APEX Developers India: The Good, The Bad, and The Ugly

The pros of outsourcing to India has not been unknown to anyone. The Cost-effectiveness, access to skilled talent, advanced technological infrastructure are some of the main factors that make India, the most lucrative Outsourcing destinations.

Like other software solutions, there is a vast pool of Oracle APEX developers India who can build, deploy, and support powerful Oracle Application Express mobile and data-driven web applications.

India has skilled Oracle APEX developers who have exceptional experience in providing data management, integration, design, and development & application management services. As per a survey, 80% of Europe and US-based firms prefer to outsource to India than other countries like the Philippines, Ireland, China, and Mexico. These countries understood India’s potential when it comes to the IT sector.

The rising of the different IT companies across India gives competition to each other in terms of quality software solutions at the most cost-effective prices. For example, the service that you will get in the US for $5000, you can expect the same level of quality service from Oracle APEX developers India at around $1500-$3000. It is because the costs of living in India are much less than that of the USA. The IT Companies in India have easy access to certified and highly skilled developers at cheaper rates. It lets the companies in India provide excellent levels of quality services at most affordable rates.

One can expect every sort of Oracle APEX software development service including Application Development, Migration, Upgradation, Oracle APEX hosting, Oracle APEX remote support, Oracle Database Support, Oracle APEX Training from the professionals in India at your desired rates and time. If quality is your concern, you will feel happy to know that the outsourcing companies in India follow international standards like ISO9000, CMM, Six Sigma Quality certification.

The quality services at affordable prices might be the reason India dominated the global Outsourcing market with a 67% share in the year 2018. By 2023 India will be the largest hub of software developers in the world, says C sharp corner. Why then not outsource to a country whose excellency in the IT sector the world admires?
There are a lot of other outsourcing benefits that can help you thrive your business if you outsource to India. The flexible outsourcing policies are one among them. All the IT policies are designed to offer maximum benefits to the country itself and the international companies. The other added advantage is the advantage of time-zones. The time difference between India and the US helps US clients to achieve greater efficiency.

There is nothing in the world that only has positives and no negatives. It depends on the individual which aspect he wants to focus on. There are disadvantages to Offshoring too. To say, one of the biggest disadvantages is the loss of confidentiality. The second one is that You might be faced with the quality issues if you outsource to an inexperienced company or a newbie freelancer through online sites like Upwork or other freelancing websites. The slow processes and late deliveries might make outsourcing a bad affair for you.

The positives can easily outnumber the negatives of outsourcing. There is a reason why Some of the major companies in the world have dedicated offshore development centres in India including Accenture, IBM, Dell, Infosys, CSC, Wipro, Cognizant are some to name a few.

The right outsourcing partner can help you grow infinitely by giving you access to India’s vast pool of skilled software engineers who are known for their efficiency and performance. Abacasys with its 14+ years of experience in the IT industry understands the client’s unique requirements and provide DBA Support, Oracle Custom Development & Oracle Application Testing services tailor-made to their needs.

Get offshore services including Oracle-related implementation, integration, upgrades, lifecycle management, and remote application support from the most advanced team of APEX Consultants and Oracle DBAs with ABACA.

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