Oracle to Postgres: Compatibility and Migrating Tools

What are the Challenges with Remaining on Legacy Oracle Infrastructures?

High Oracle total cost of ownership trap

Oracle’s high total cost of ownership reflects restrictive and complicated contracts that often lead organizations into a financial dilemma, limiting their budget for innovation and growth. Businesses may be compelled to pay for expensive services like support and maintenance. Additionally, pricing lists and tiers aren’t easy to understand, potentially leading to runaway costs.

Lack of agility and deployment options

In today’s rapidly evolving technological landscape, 70% of new applications are developed using open source technologies. This trend pushes enterprises to deploy PostgreSQL across multi-cloud environments and containers, enabling them to quickly adapt modern architectures and meet market demands. The flexibility of PostgreSQL allows organizations to innovate more freely, responding swiftly to changes without the constraints present in legacy systems.

Innovation and future-proofing

Oracle’s proprietary and costly innovation strategies create significant barriers for organizations aiming to embrace new technologies. Conversely, PostgreSQL provides an adaptable framework that integrates diverse workloads – including transactional, analytical, and AI workloads – into a cohesive and cost-effective solution. This flexibility empowers businesses to streamline their operations and make the most of modern advancements without the limitations of legacy systems. By choosing PostgreSQL, organizations can harness the latest advancements in technology without being bogged down by legacy constraints.

IT consolidation

In the quest to streamline IT expenditures, organizations should focus on a fewer number of platforms. PostgreSQL effectively accommodates a wide array of workloads, making it an ideal choice for businesses looking to consolidate their database environments. This consolidation not only reduces costs, but also simplifies management and optimizes performance across varying operational needs.

What Obstacles Exist when Migrating from Oracle Databases?

Uncover the challenges of Oracle to Postgres migration

Migrations are complex

Migrating from Oracle to Postgres is not a straightforward task. It requires significant assessment and effort across various dimensions, including schema, data, and application dependencies. Organizations often face complexities that necessitate a deep understanding of both platforms to ensure a successful transition.

Troublesome contracts

The intricacies of Oracle licensing create additional hurdles for businesses considering migration. With complicated agreements that can lead to unforeseen costs, many organizations are wary of the disruptive nature of Oracle audits. Additionally, there are widespread concerns regarding the quality of support expected from Oracle, complicating the decision-making process further.

Oracle skills

A significant investment in Oracle training means that businesses often possess a substantial skills base in their current Oracle systems. There are genuine fears surrounding the potential loss of this expertise during the migration process, as employees may need to transition to working with a new database platform.

Oracle-dependent applications

Many applications are deeply intertwined with Oracle's specific functionalities, making it challenging to separate them during migration. Some applications are only supported on Oracle, such as those built by Oracle or by third-party vendors. Even if these applications could technically be migrated to Postgres, unless the app vendor certifies support for their application on Postgres, the migration would be rendered ineffectual and unsustainable. Therefore, it's crucial to fully assess application dependencies and vendor support before proceeding with migration efforts.

Projects can be multi-faceted

Oracle to Postgres migrations often require collaboration among a diverse group of stakeholders, including business analysts, technical teams, and developers. This multifaceted nature can lead to miscommunication or misalignment of goals, which may ultimately delay the migration process or compromise its success.

Identifying the right Postgres vendor

The marketplace for Postgres service providers is crowded, and not all vendors offer equal expertise. Many organizations struggle to discern which vendor's claims of subject matter expertise are genuine, making it essential to conduct thorough due diligence before selection.

Meeting enterprise-grade requirements

For enterprise-grade Oracle to Postgres migrations, maintaining high availability, security, and multi-tenancy standards is imperative. Ensuring that these critical requirements are met during and after migration is a significant concern for organizations, and any lapses can lead to operational challenges down the line.

Lack of internal PostgreSQL expertise

A successful migration requires expertise not just in Postgres, but in the operational aspects to support it. Organizations often face difficulties in identifying, recruiting, and retaining skilled Postgres experts who can adequately manage newly migrated databases, which is essential for maintaining efficient enterprise-grade operations.

What Oracle Database Limitations Exist When Dealing with Flexible Deployments in AI and Analytics Workloads?

Learn the impacts to business agility and innovation

  • Innovation ceilings: Legacy applications like Oracle have ceilings for innovation, limiting data value and perpetuating vendor lock-in. These constraints hinder businesses from leveraging cutting-edge technologies that could transform their operations.
  • Inability to meet Operator requirements: App developers, data engineers, architects, and data scientists increasingly demand open standards and interoperability. Oracle may have a less developer-friendly interface and contemporary cloud deployment models, putting organizations at a disadvantage.
  • Deployment challenges: Oracle's architecture cannot support modern multi-cloud and hybrid cloud strategies, preventing businesses from adapting to the evolving landscape of IT deployments that require agility and flexibility.

What are the Steps to Migrate from Oracle to Postgres?

7 Key steps for a successful migration

The first steps of an Oracle migration process requires leadership’s decision to migrate, analyze feasibility and Postgres database alternatives and identify deployment models. The migration process itself includes seven essential phases:

  1. Planning the migration
    Establish a clear strategy that outlines the objectives, stakeholders and resources required for the migration. This initial phase is vital for setting realistic timelines and expectations.
  2. Migrating database schema code and data
    Transfer the structure of the database along with its data. Pay careful attention to data types, SQL syntax, and procedural language constructs, and procedural language syntax constructs to promote compatibility with Postgres.
  3. Migrating interfaces and applications
    Update or replace applications that interact with the Oracle database to function seamlessly with the new Postgres environment.
  4. Migrating reports and management tools
    Transition any reporting tools and management systems that rely on Oracle infrastructure to ensure continuity in operations.
  5. Migration testing
    Conduct extensive testing to identify and resolve any issues that may arise during the migration. This includes functional testing, performance testing and user acceptance testing.
  6. Optimizing and configuring the post-migration system
    After the migration is complete, it's crucial to optimize the new database settings for performance and security based on the specific needs of the organization.
  7. Completing the cutover
    Finally, execute the cutover to ensure that all systems are fully operational on Postgres, and any Oracle dependencies are officially retired. This phase solidifies the transition, enabling users and applications to work comfortably within the new environment.

What Deployment Options are Available for Organizations Migrating from Oracle to Postgres?

Exploring optimal deployment strategies for seamless Oracle to Postgres migration

Organizations have a variety of deployment options to consider when migrating from Oracle to Postgres, allowing them to select the best-fit architecture for their specific needs.

  • On-premise deployments: This approach gives businesses full control over their databases, with configurations factoring in physical servers, virtual machines (VMs) and containerised environments using Kubernetes. On-premise deployments can be tailored to meet unique requirements while leveraging existing infrastructure.
  • Kubernetes/Containers: Containerization facilitates scalable and agile application development. By deploying Postgres within containers, organizations can achieve rapid updates and ensure consistent environments across development and production.
  • Public cloud – self managed: Organizations can choose to manage their own Postgres instances in the public cloud, providing flexibility and control while benefiting from the cloud's inherent scalability and resource availability.
  • Public cloud – managed service: Utilizing EDB's cloud database service, such as the EDB Postgres AI Cloud Service, simplifies the deployment and management of Postgres databases. This service provides a hands-off approach, with many essential tasks for operating and maintaining the database handled by the EDB managed service. This allows organizations to focus on their core business objectives while ensuring that their database infrastructure is robust and well-maintained.
  • Hybrid deployments: A hybrid approach combines both on-premise and cloud resources, allowing organizations to optimise their database performance while ensuring compliance and data locality in critical applications. This flexibility enables enterprises to adapt to changing business requirements seamlessly.

Through these varied deployment models, organizations can effectively transition from Oracle to Postgres, ensuring that their operations remain agile and aligned with modern technological standards.

What Oracle Migration Tools and Services to Prioritize When Moving to Postgres?

Enabling seamless transitions with essential Oracle migration tools and services

Migrating from Oracle to Postgres necessitates a strategic selection of tools and services designed to ease the transition and ensure compatibility.

  • Oracle compatibility
    Implementing features that promote compatibility is vital, allowing organizations to utilize existing Oracle database applications on a Postgres platform with minimal alterations. This includes essential compatibility elements such as:
    • Data types
    • Object types
    • Query syntax
    • Data dictionary views
    • Built-in PL/SQL packages
    • Database drivers
    • Workalike DBA tools
    • Postgres reporting in formats familiar to Oracle DBAs
  • Migration tools
    A suite of tools is available to streamline this process by reducing cycles and enhancing efficiency. Key tools should include Migration Portal, Migration Toolkit, Replication Server and AI-driven migration copilots, all aimed at facilitating a smooth transition to Postgres.
  • Migration expertise and support
    The complexity of Oracle to Postgres transitions is easier with professional expertise and support. Engaging EDB Professional Services and securing DBA and operations tools post-migration are crucial elements for ensuring ongoing reliability, performance and operational excellence in the new database environment.

Which Product Features Promote Successful Enterprise-grade Oracle to Postgres Migrations?

Essential functionalities that enhance the migration process and ensure sustainable performance for enterprises transitioning from Oracle to Postgres.

Successful migrations from Oracle to Postgres often hinge on leveraging specific product features that facilitate this transition and ensure optimal performance.

  • Cloud modernization and agility support
    The ability to adopt flexible deployment strategies is crucial for today’s dynamic business environment. Solutions that enable cloud and multi-cloud strategies, along with fully managed Database as a Service (DBaaS), empower organizations to swiftly adapt to changing demands.
  • Postgres database security features
    Enhanced security measures play a vital role in securing data during and post-migration. Features such as Transparent Data Encryption (TDE), Data Masking, Password Profiles, SQL Protect and robust auditing functionalities ensure that sensitive information remains safe, while facilitating compliance with regulatory standards.
  • High availability
    Ensuring that Postgres solutions provide geo-distributed cluster support across multi-cloud platforms is fundamental. Achieving the highest levels of availability (up to 99.999%) safeguards business continuity and boosts confidence in migrated systems.

Focusing on these critical product features not only streamlines the migration process, but also fortifies the operational integrity of the enterprise environment in the long run.

What Capabilities Are Needed to Operate And Maintain Postgres After Migration

Ensuring a seamless transition and optimal performance post-migration.

Postgres support requirements mirror those needed for legacy Oracle databases, ensuring a smooth transition and ongoing operational efficiency.

Operational tools and processes

Organizations must implement robust monitoring and management tools to oversee the migrated system. Key areas include backup and recovery solutions, high availability mechanisms, security and auditing procedures and comprehensive reporting capabilities.

Regular updates

Maintaining system integrity involves conducting periodic minor version updates and planning for possible major version upgrades. This practice helps safeguard performance and security.

Trained administrators and users

Equipping the team with trained database administrators and users is crucial. This ensures the organization can fully leverage the features and capabilities of the new Postgres system while minimizing disruption during and after the migration process.

What Professional Services Capabilities can Assist with Organizational Oracle to Postgres Migration?

Overcome the complexities of Oracle to Postgres migrations with expert support and strategic planning

Migrating from Oracle to Postgres can present unexpected complexities that organizations may not initially envision. To navigate these challenges effectively, leveraging professional services designed specifically for Oracle to Postgres migrations can significantly enhance success rates.

Assessing, prioritizing and planning migrations
Professional services can facilitate a thorough assessment of existing Oracle environments, prioritizing which databases to migrate based on business value and operational considerations. This structured planning helps organizations define their migration strategy and timeline, ensuring a smooth transition to Postgres.

Postgres subject matter expertise
Having access to Postgres experts can provide invaluable support. These specialists can assist internal Database Administrators with best practices, troubleshooting issues and optimizing the database environment post-migration, ultimately leading to higher performance and reliability.

High performance analytics and database consolidation
Professional services can also aid in the analytics phase by consolidating organizational data assets effectively. This not only streamlines operations but enhances data accessibility and reporting capabilities within the new Postgres environment, enabling better decision-making.

Maintenance of high availability, security and multi-tenancy standards
Ensuring that newly migrated databases meet high availability, security and multi-tenancy requirements is crucial. Professional services can provide the necessary frameworks and best practices to maintain these standards throughout the migration process, fostering confidence in the new system's robustness and compliance.

Learn More About Transitioning to PostgreSQL

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Oracle Migration and Compatibility: FAQs

Why leave Oracle and move to PostgreSQL? chevron_right

As businesses grow, they may find that their Oracle database no longer meets their needs. They may seek a more extensible and feature-rich solution that accommodates a broader range of data types and languages. Additionally, some organizations may choose to switch to avoid vendor lock-in or high licensing fees.

What are the benefits of moving from Oracle to PostgreSQL? chevron_right

One of the primary advantages of PostgreSQL is that it does not impose any licensing fees due to its open source nature, allowing both individuals and enterprises to freely access, modify, and distribute its code. Beyond cost, PostgreSQL offers many other advantages compared to Oracle, including:

  • Extensibility support
    PostgreSQL operates in a catalog-driven manner, which means it can store a broader range of information within its catalogs, making it more adaptable.
  • Transition to modern infrastructure
    Migrating from restrictive, legacy Oracle database infrastructures and adopting PostgreSQL offers a clear path for meeting organizational AI, analytics, and machine-learning application initiatives. This shift supports innovative development without the burden of outdated systems.
  • Feature-packed flexibility
    One of the primary advantages of PostgreSQL is its open source nature, which eliminates licensing fees, allowing both individuals and enterprises to access, modify, and distribute its code freely. Furthermore, PostgreSQL is known for its feature-packed flexibility and extensive capabilities, such as robust concurrency management, advanced indexing options, and support for large volumes of data. It fully supports ACID compliance, ensuring data integrity and resilience against faults. By comparison, while Oracle offers many of these features, PostgreSQL stands out due to its strong community support and continuous improvements made by contributors worldwide.
What are some best practices for Oracle migrations to PostgreSQL? chevron_right

Before initiating the transition from Oracle to PostgreSQL, consider the following best practices:

  • Obtain organizational consensus
    It’s essential that the business comprehensively understands and agrees on the reasons for migrating to PostgreSQL. Define clear migration goals, timelines, and contingencies.
  • Identify the data for migration
    Create a thorough inventory of all data or applications that must be transitioned, discard any outdated data, and pinpoint compatibility concerns ahead of time.
  • Conduct rigorous testing
    Perform functional and performance testing on both the migrated data and the underlying schema, ensuring that all aspects of the system function as intended. This helps to detect any issues before finalizing the migration process.
  • Implement new security and monitoring protocols
    Transitioning to PostgreSQL necessitates adapting to different security and monitoring protocols. While Oracle has robust security and monitoring capabilities, it's crucial to implement and familiarize the organization with PostgreSQL's specific protocols and tools to minimize risks related to data security and potential outages.
What are the main challenges of Oracle to PostgreSQL migrations? chevron_right

Numerous differences exist between the two databases, such as variations in data types, SQL syntax, procedural language, and a wide range of potential compatibility issues that may arise when applications are transferred.

How does EDB provide Oracle compatibility for PostgreSQL? chevron_right

EDB has developed the EDB Postgres Advanced Server (EPAS), an advanced version of PostgreSQL that provides built-in support for many Oracle-specific data types, object types, keywords, procedural constructs, and additional features. We regularly assess migration hurdles and introduce new compatibility attributes with each major release of EPAS. This solution is crafted to mirror Oracle’s code, drivers, and queries while providing essential support for specific Oracle features or workloads. Such capabilities could potentially cut down code and application rewrites by 80% or more. Furthermore, EDB Postgres Advanced Server ensures robust application security to mitigate migration risks and delays.

What does EDB’s Fully Managed Oracle-compatible solution offer? chevron_right

Our fully managed, multi-cloud PostgreSQL solution enables you to concentrate on expanding your business while we handle all aspects of database deployment, administration, and operational responsibilities. We'll guarantee high availability and backups of your critical data and provide round-the-clock professional support for any challenges you may encounter.

How does EDB conduct Oracle migrations to PostgreSQL? chevron_right

Initially, we focus on gaining a comprehensive understanding of your entire database infrastructure and mapping applications to corresponding data schemas for assessment. Next, we determine which databases fall within the migration scope, outline the return on investment that aligns with the migration strategy, and establish a prioritized backlog for migration tasks. For a detailed overview of our iterative process, click here.

What are the requirements for EDB’s Oracle migration? chevron_right

Our professional services team will perform a complimentary migration assessment of your schema and data to confirm that your database is suitable for transitioning to PostgreSQL

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