Why is it easier to leave Oracle with Advanced Server than with plain Postgres?

Because of the Oracle compatibility. When organisations try to leave Oracle, the hard part isn't moving the data — it's the applications, which are full of Oracle-specific code: PL/SQL stored procedures, packages, Oracle syntax, functions and behaviours accumulated over years. Migrating to plain community PostgreSQL means Postgres doesn't understand most of this Oracle-specific code, so you'd have to rewrite a large amount of your application logic — an enormous, expensive, risky effort that often makes leaving Oracle infeasible. EDB Postgres Advanced Server specifically adds a high degree of Oracle compatibility on top of Postgres: it understands and runs Oracle's PL/SQL, syntax, packages and many features, so far more of your existing Oracle workload runs unchanged. That turns a massive rewrite into a much smaller, scoped migration — which is frequently the difference between leaving Oracle being feasible or not. The compatibility is the whole point.

What's the business case for migrating off Oracle?

It's usually straightforward and compelling: licensing cost. Oracle's database licensing is famously expensive and complex, and it's a large, recurring cost that grows with your usage — and Oracle license audits can produce unexpected, painful true-up bills. By migrating Oracle-style workloads to EDB Postgres, organisations can cut that database licensing cost dramatically, because they're moving from an expensive proprietary license to an open-source-based database with a far lower-cost subscription. For most organisations feeling Oracle's licensing pain, that saving alone is the entire business case — the migration pays for itself, often quickly, and then delivers ongoing savings. The compatibility (above) is what makes capturing that saving feasible without breaking your applications; the licensing saving is what makes it worth doing. EDB Postgres Advanced Server is the most-proven way to achieve both.

Is the migration risky? Does everything just work?

It's a real project that needs proper assessment and testing — no responsible vendor claims a zero-effort, everything-just-works migration, and you should be sceptical of anyone who does. The right approach is: first assess your Oracle workloads for compatibility (EDB provides tooling and methodology for this), which tells you what will move cleanly and what needs attention; then run a pilot migration of a representative workload and test it thoroughly — compatibility, performance, and the applications end-to-end; then migrate the broader estate in planned waves. Advanced Server's high compatibility means far more moves cleanly than with plain Postgres, dramatically shrinking the effort and risk, but some Oracle-specific features and edge cases will need attention, and thorough testing is essential. Done properly — assess, pilot, test, migrate in waves — it's a scoped, managed, confident project rather than a risky leap. TechBag helps you assess and plan your specific migration honestly.

After migrating, am I locked into EDB instead of Oracle?

No — and that's an important part of the value. Leaving Oracle only to lock yourself into another proprietary database, or into a single cloud, wouldn't be real freedom. EDB Postgres Advanced Server is built on true open-source PostgreSQL — the open database the industry is standardising on — and it runs anywhere: on-premises, on any public cloud, or hybrid, with open-source flexibility and no cloud lock-in. You get EDB's enterprise support and Oracle-compatibility features, but the underlying database is open Postgres, so you retain portability and sovereignty. And you can add EDB Postgres Distributed (PGD) for active-active high availability if needed. So you escape Oracle's licensing and lock-in for an open, portable, well-supported, industry-standard database — gaining both freedom and enterprise assurance, rather than swapping one proprietary cage for another.

Why buy through TechBag?

TechBag is a Bengaluru-headquartered reseller serving pan-India: Oracle-estate scoping (workloads, PL/SQL footprint, licensing cost), a compatibility assessment (what moves cleanly, the licensing-saving business case), a pilot migration and thorough testing, migration-wave planning, HA (PGD) design for mission-critical workloads, honest risk-scoping (no zero-effort promises), and GST-compliant invoicing with local Postgres-savvy support.

Enterprise

Small Businesses

Industries

BFSI

Banking, Financial Services & Insurance

Healthcare
Coming soon
Manufacturing
Coming soon
Retail & E-Commerce
Coming soon

Category: Oracle-Compatible Postgresby EDBTechBag Intel Page

EDB Postgres Advanced Server

Escape Oracle’s licensing — keep your applications. EDB Postgres Advanced Server runs Oracle’s PL/SQL, syntax and features on Postgres, so your Oracle apps migrate with minimal rewriting, at a fraction of the licensing cost.

Get Quote ▶ Watch the demo Calculate savings →

High Oracle compatibility (PL/SQL)Cut Oracle licensing costOpen Postgres, no new lock-in

How it’s rated

Full scoreboard ↓

The role

the leading path

Oracle escape

Compatibility

PL/SQL, syntax

High

Business case

dramatically

Cut licensing

Peer rating

Oracle migration*

4.6 / 5

Quick answer

EDB Postgres Advanced Server is EDB's flagship enterprise Postgres distribution — and, above all, the leading path off Oracle. The reason organisations struggle to leave Oracle isn't the data; it's the applications: years of PL/SQL code, Oracle-specific features, syntax and behaviours that would be enormously expensive to rewrite for a different database. EDB Postgres Advanced Server provides a high degree of Oracle compatibility — supporting Oracle's PL/SQL, much of its syntax, packages, functions and features — so that Oracle-style workloads and applications run on Postgres with dramatically less rewriting than migrating to plain PostgreSQL or another database would require. The business case is usually compelling and simple: Oracle's licensing is famously expensive and complex, and moving to EDB Postgres can cut database licensing cost dramatically while keeping your applications working. On top of the Oracle compatibility, Advanced Server adds enterprise security, performance and manageability features to Postgres, and is the foundation for EDB's distributed high availability (PGD). For organisations feeling Oracle's licensing pain — which is a great many — EDB Postgres Advanced Server is the most-proven, most-compatible route to freedom, on the open database the industry is standardising on.

Part 01 · Orient

The EDB Postgres platform family

This page covers Advanced Server — the Oracle-migration flagship. The rest of the portfolio:

EDB Postgres Advanced Server

This page.

You’re here

EDB Postgres AI

The multi-model Postgres platform.

View page →

EDB Postgres Extended Server

Extended-capability Postgres.

View page →

EDB Distributed HA (PGD)

Active-active geo HA.

View page →

EDB Postgres AI Analytics

Analytics & AI at petabyte scale.

View page →

Quick facts

30-second orientation

Product: EDB Postgres Advanced Server
Vendor: EDB (EnterpriseDB) — part of IBM
The role: The leading path off Oracle
How: High Oracle compatibility (PL/SQL, syntax, features)
The barrier it removes: Rewriting Oracle apps for a new DB
The business case: Cut Oracle licensing cost dramatically
Also adds: Enterprise security, performance, manageability
Foundation for: EDB Postgres Distributed (PGD) HA
The database: Open Postgres — the industry standard
In India via: TechBag — quotes, PoCs, GST invoicing, Tier-1 support

Part 02 · Learn

Understand Oracle-compatible Postgres before you buy it

Most product pages skip this. We start here — so you buy a capability, not a buzzword.

What is Advanced Server?

EDB's Oracle-compatible enterprise Postgres — running Oracle's PL/SQL, syntax and features on Postgres, so Oracle apps migrate with minimal rewriting.

The leading, most-proven path off Oracle.

Staying on Oracle vs migrating to compatible Postgres — the honest table

What consolidation actually replaces, dimension by dimension.

Dimension	Stay on Oracle (or full rewrite)	EDB Advanced Server (compatible)
Oracle licensing	Expensive, growing	Cut dramatically
The trap	PL/SQL & Oracle features	Run on Postgres (compat)
Migration effort	Huge (plain Postgres)	Far smaller (Advanced Server)
The move	All-or-nothing leap	Assess then migrate, scoped
After migration	New lock-in?	Open Postgres, runs anywhere
HA	Oracle RAC (pricey)	PGD active-active
Support	Oracle	EDB (IBM-backed)
The destination	Proprietary	Industry-standard Postgres

The most-proven Oracle escape — no migration is zero-effort; assessment and testing are essential.

Under the hood

The five pieces of the platform

Vendors love diagrams; buyers need to know what they’re actually operating. Here’s the whole platform, demystified.

The key

Oracle Compatibility Layer

PL/SQL, syntax, features

A high degree of Oracle compatibility — PL/SQL, much of Oracle's syntax, packages, functions and behaviours — so Oracle apps run on Postgres with minimal rewriting.

The foundation

Enterprise Postgres

Hardened core

Enterprise-grade Postgres with added security, performance and manageability features — the robust database beneath the compatibility.

The path

Migration Tooling

Assess & move

Tooling and methodology to assess Oracle workloads for compatibility and migrate them — turning an intimidating move into a scoped project.

The resilience

HA Foundation

Basis for PGD

The foundation for EDB Postgres Distributed (PGD) — so migrated workloads can reach active-active, up-to-99.999% availability.

The freedom

Open & Supported

No lock-in, IBM-backed

True open Postgres, run anywhere, with EDB (IBM-backed) enterprise support — freedom from Oracle without a new lock-in.

One agent on every machine, one console over all of them — modules attach without a second operational world.

Part 03 · Evaluate

Twelve capabilities. Compatible, migrate, save.

EDB Postgres Advanced Server runs your Oracle PL/SQL and features on Postgres — so you escape Oracle's licensing without rewriting everything.

Compatible

PLSQL

PL/SQL Compatibility

Runs Oracle PL/SQL — the stored procedures, packages and code that make Oracle apps hard to move, kept working.

Compatible

Syntax

Oracle Syntax & Features

Supports much of Oracle's SQL syntax, functions, packages and behaviours — minimising application rewrites.

Compatible

Compat

High Compatibility

A high degree of Oracle compatibility — far more of your Oracle workload runs unchanged than on plain Postgres.

Migrate

Assess

Migration Assessment

Assess Oracle workloads for compatibility — know what moves cleanly and what needs attention, before you commit.

Migrate

Move

Migration Tooling

Tooling and methodology to migrate schema, data and code from Oracle to Postgres — a scoped project, not a leap of faith.

Migrate

Savings

Licensing Savings

Cut Oracle licensing cost dramatically by moving to EDB Postgres — usually the whole business case.

Enterprise

Security

Enterprise Security

Added security features on Postgres — the protection enterprise and migrated workloads need.

Enterprise

Perf

Performance Features

Enterprise performance and manageability features — Postgres tuned for demanding, migrated workloads.

Enterprise

HA Foundation (PGD)

The foundation for active-active PGD — migrated workloads can reach up to 99.999% availability.

Enterprise

Open

Open & Portable

True open Postgres — run anywhere, no new lock-in. Freedom from Oracle, not a swap of one cage for another.

Enterprise

Support

EDB (IBM) Support

Enterprise support and accountability — the safety net for migrating and running mission-critical workloads.

Migrate

Standard

On the Industry Standard

Built on Postgres — the open database the industry is converging on. A future-proof destination.

See it, don’t just read it

Watch EDB Advanced Server in action

The Oracle-to-Postgres migration path and enterprise Postgres explained.

EDB (official)·Overview

Introducing EDB Postgres AI

EDB's sovereign data-and-AI platform built on Postgres, introduced by EDB.

EDB (official)·Platform

EDB Postgres AI: Enterprise-Grade Postgres

What makes EDB's Postgres enterprise-grade — HA, security, support.

EDB (official)·Q&A

Postgres Architect Answers AI & Data Questions

An EDB Postgres architect fields real AI and data questions.

Want a live, India-context walkthrough on your own fleet?

Book a guided demo →

Why EDB Postgres Advanced Server

It’s the apps that trap you. Compatibility frees them.

Here’s what genuinely sets EDB Postgres Advanced Server apart from the alternatives.

It's the apps, not the data, that trap you in Oracle

Organisations feel stuck on Oracle not because moving the data is hard, but because of the applications: years of PL/SQL stored procedures, Oracle-specific features, syntax and behaviours woven through the application layer, which would be enormously expensive and risky to rewrite for a different database. EDB Postgres Advanced Server's high Oracle compatibility — running Oracle's PL/SQL, syntax, packages and features — lets those Oracle apps run on Postgres with dramatically less rewriting than any other target. That's the barrier it removes, and it's why it's the leading Oracle-escape path.

The business case writes itself: licensing

Oracle's licensing is famously expensive and complex — a major, recurring line item that grows with your usage and audits. Moving Oracle-style workloads to EDB Postgres can cut that database licensing cost dramatically, and for most organisations that saving is the entire business case on its own. When you can run your applications on an open, capable database at a fraction of the licensing cost, the numbers usually make the decision. EDB Postgres Advanced Server is the most-proven way to capture that saving without breaking your applications.

Compatibility means less rewriting than plain Postgres

You could migrate from Oracle to community PostgreSQL — but plain Postgres doesn't understand Oracle's PL/SQL and many Oracle-specific features, so you'd rewrite far more of your application code. EDB Postgres Advanced Server's specific value is its high Oracle compatibility: it supports Oracle's PL/SQL, syntax, packages and behaviours, so far more of your Oracle workload runs unchanged, and the migration is dramatically smaller and lower-risk. It's the difference between a scoped migration and a massive rewrite — which often determines whether leaving Oracle is feasible at all.

Assess first, then migrate with confidence

A responsible Oracle migration starts with assessment: which parts of your Oracle workload move cleanly, and which need attention. EDB provides the tooling and methodology to assess compatibility and then migrate schema, data and code — turning an intimidating, all-or-nothing-feeling move into a scoped, planned project with known effort. You don't leap; you assess, plan, and migrate with confidence, which is exactly how mission-critical database migrations should be done.

Freedom without a new cage

Leaving Oracle only to lock yourself into another proprietary database or a single cloud isn't real freedom. EDB Postgres Advanced Server is true open Postgres: it runs anywhere — on-prem, any cloud, hybrid — with open-source flexibility, no new lock-in, and the option of active-active PGD high availability. And it's enterprise-supported (now IBM-backed), so you gain freedom AND assurance. You escape Oracle's licensing and lock-in for an open, portable, well-supported database the whole industry is standardising on — not a swap of one cage for another.

The honest positioning

EDB Postgres Advanced Server is the most-proven, most Oracle-compatible migration path off Oracle — that compatibility is its distinctive strength. Alternatives exist: plain PostgreSQL (more rewriting), AWS/Azure/Google managed Postgres (cloud-locked), or staying on Oracle (expensive). No migration is zero-effort — assessment and testing are essential, and some Oracle features need attention. But for compatibility, licensing savings and openness combined, EDB leads. TechBag scopes your specific Oracle migration honestly, in INR/GST.

Oracle-compatible

PL/SQL, syntax, features

Licensing saving

The business case

Open destination

No new lock-in

Proof, not promises

The numbers behind the platform

0 Oracle escape

the leading, most-compatible path off Oracle

— The role

0 big saving

Oracle licensing cost, cut dramatically

— The business case

0 barrier removed

PL/SQL and Oracle features run on Postgres

— Compatibility

0 scoped migration

assess then migrate — not a leap of faith

— The method

0 new lock-in

open Postgres, runs anywhere, IBM-supported

— Real freedom

0.6/5

peer rating for Oracle migration

— Peer*

What your EDB Postgres Advanced Server journey looks like

Day 0Free

Oracle-estate scoping

Your Oracle workloads, PL/SQL footprint, licensing cost and migration goals. TechBag scopes it free.

Week 1–2Assess

Compatibility assessment

Assess your Oracle workloads for EDB compatibility — what moves cleanly, what needs attention; quantify the licensing saving.

Week 3–8PoC

Pilot migration

Migrate a representative Oracle workload to EDB Postgres Advanced Server; test compatibility, performance and applications thoroughly.

Month 2+Scale

Estate migration

Migrate workloads in waves; retire Oracle licensing; add PGD HA where needed. TechBag models the saving in INR/GST.

Trusted across regulated industries in 100+ countries

EricssonABN AMROBBVADeutsche BorseMastercardLockheed MartinMcKessonNTTSonySt. Jude Children's Research HospitalEricssonABN AMROBBVADeutsche BorseMastercardLockheed MartinMcKessonNTTSonySt. Jude Children's Research Hospital

Verified reviews

The review scoreboard

Modelled on Gartner Peer Insights structure. *Counts and breakdowns are illustrative pending verified review collection.

4.6

260+ reviews*

92% would recommend

Oracle compatibility4.6

Licensing savings4.5

Migration support4.6

Evaluation & contracting4.5

5★

64%

4★

28%

3★

2★

1★

Quick poll — what’s driving your evaluation?

Talk to an advisor

Financial Services

“Oracle licensing was crushing us. EDB Postgres Advanced Server let our PL/SQL-heavy apps run on Postgres with far less rewriting than plain Postgres would've needed — and cut our database licensing cost dramatically. The business case wrote itself.”

Database Director

Financial Services

Telecom

“It's the apps, not the data, that trapped us — years of PL/SQL. The Oracle compatibility kept most of it working. Without that, leaving Oracle wouldn't have been feasible at all.”

Lead DBA

Telecom

Government

“We assessed first — knew what moved cleanly and what needed attention — then migrated as a scoped project. Not a leap of faith. That methodology gave us confidence for a mission-critical move.”

Enterprise Architect

Government

Insurance

“Freedom without a new cage — open Postgres that runs anywhere, IBM-backed support. We escaped Oracle's licensing and lock-in for the database the industry's standardising on.”

CTO

Insurance

Manufacturing

“The licensing saving funded the whole migration and then some. When you can run your apps at a fraction of the Oracle cost, the numbers make the decision.”

IT Finance Lead

Manufacturing

Retail

“Migrating to plain Postgres would've meant rewriting far more — Advanced Server's compatibility made the migration dramatically smaller and lower-risk. That's the whole point.”

Senior DBA

Retail

BFSI

“No migration is zero-effort — some Oracle features needed attention, and testing was essential. But for compatibility plus savings plus openness, EDB was clearly the right path. Scope it honestly.”

Database Architect

BFSI

Government

“It's the foundation for PGD too — our migrated workloads reached active-active HA. Freedom from Oracle AND five-nines availability.”

Infrastructure Lead

Government

The market maps

Where everyone sits — the grids

Analyst firms bury this view behind paywalls, and G2 retired its Grid. So here’s TechBag’s synthesis of the Oracle-compatible Postgres market — tap any vendor to see why it sits where it does.

Grid 01 · The market

TechBag Oracle-Migration Grid

Execution strength vs product vision — the classic market map, minus the paywall.

ChallengersLeadersSpecialistsVisionaries

EDB Adv ServerThis page

The leading, most-compatible Oracle escape — this page.

Grid 02 · The architecture

Oracle Compatibility × Openness

The grid nobody publishes — Oracle compatibility (minimal rewrite) vs openness/no-lock-in of the destination.

Easy but shallowDeep & runnableLegacy toolsDeep but heavy

EDB Adv ServerThis page

Oracle compat + savings + open — the corner it fills.

Positions are TechBag’s illustrative synthesis of public review-platform data and vendor documentation — not a reproduction of any analyst graphic. Verify before relying on it.

Part 04 · Decide

EDB Advanced Server vs the field

Staying on Oracle, plain Postgres and cloud Postgres — honest lanes; the edge is high compatibility plus savings plus openness.

Dimension	EDB Adv Server	Stay on Oracle	Plain PostgreSQL	AWS Aurora Postgres	Other DB migration
Oracle compatibility	High (PL/SQL, syntax)	Native (it IS Oracle)	Low	Low (Postgres)	None
Licensing cost	Dramatically lower	Very high	Free (community)	Cloud pricing	Varies
Openness / no lock-in	Open, runs anywhere	Locked	Open	Cloud-locked	Depends
Enterprise support	EDB (IBM-backed)	Oracle	Community	AWS	Per vendor
Best fit	Orgs escaping Oracle licensing with minimal rewrite	Deeply Oracle-committed	Greenfield / non-Oracle	Single-cloud AWS shops	Full-rewrite tolerant

● Strong◐ Partial / add-on○ Weak / externalCompiled from public vendor materials and review platforms for orientation; verify before relying on it.

Which Oracle-escape approach fits you?

Honest fit signals — because the fastest way to lose your trust is to pretend one product wins every scenario.

Choose EDB Postgres Advanced Server if…

✓You're feeling Oracle's licensing pain and want out
✓Your Oracle apps have PL/SQL / Oracle-specific code
✓You want minimal rewriting via high Oracle compatibility
✓You want freedom without a new lock-in (open Postgres)

Stay on Oracle if…

✓You're deeply committed and licensing cost isn't a concern

Plain PostgreSQL if…

✓Greenfield / non-Oracle workloads with no PL/SQL to preserve

AWS Aurora if…

✓You're single-cloud AWS and accept lock-in for managed convenience

Full rewrite to another DB if…

✓Rarely — far more effort and risk than compatible migration

Do the math

What is Oracle licensing costing you?

Drag the sliders (count Oracle database instances/cores scaled here as instances; IT-hour cost as a proxy for licensing rate). Estimates model the recurring Oracle-licensing cost, with ~55% representative of the saving from migrating compatible workloads to EDB Postgres — the exact saving depends on your Oracle edition and usage; the migration cost is one-off against a recurring saving. Illustrative.

Number of Oracle instances300

2510,000

Loaded cost per IT-hour₹800

₹300₹2,000

Loaded cost = salary + overheads per productive hour. Illustrative only — your TechBag quote models actual device counts and modules.

Current annual Oracle-licensing cost

₹19,20,000

Estimated annual savings

₹10,56,000

≈ ₹52,80,000 over 5 years

Turn this into a real quote →

Pricing & plans

Three ways to consume it

EDB Postgres Advanced Server prices by subscription / per-core. TechBag models it against your Oracle-licensing saving, in INR/GST.

Advanced Server

Best for Oracle migration

High Oracle compatibility (PL/SQL)
Enterprise Postgres features
Dramatic licensing saving

+ Migration

Best for a safe move

Compatibility assessment
Pilot + test + waves
EDB (IBM) support

+ HA (PGD)

Best for mission-critical

Active-active availability
Up to 99.999% uptime
TechBag scopes migration + HA

Buy it for less — TechBag pricing beats list

Whatever the list prices above, TechBag negotiates a significantly better deal — with GST-compliant INR invoicing and local support. Ask us for your discounted quote.

Get a discounted quote →

Get an India-ready quote

Tell us your device counts and current tools — we’ll model it against what you spend today.

Get Quote

Evaluation kit

The 8 questions to ask every Oracle-migration vendor

Take this into your next vendor call — including ours.

Compatibility assessment

Assess your actual Oracle workloads — what runs unchanged on Advanced Server, and what needs attention?

PL/SQL

Test your PL/SQL code on Advanced Server — confirm the compatibility that keeps your apps working.

Licensing saving

Quantify the Oracle-licensing saving from migrating — usually the whole business case.

Rewrite scope

Confirm the migration is far smaller than moving to plain Postgres (or a full rewrite) — the compatibility advantage.

Openness

Confirm the destination is open Postgres that runs anywhere — freedom without a new lock-in.

If mission-critical, confirm the path to PGD active-active HA on your migrated workloads.

Support

Confirm EDB (IBM-backed) support for the migration and running the result — the safety net.

Commercials

Model the migration cost against the Oracle-licensing saving — TechBag quotes it in INR/GST.

FAQ

Questions buyers ask

EDB Postgres Advanced Server is EDB's flagship enterprise Postgres distribution, and above all the leading path off Oracle. It provides a high degree of Oracle compatibility — supporting Oracle's PL/SQL, much of its syntax, packages, functions and features — so that Oracle-style workloads and applications run on Postgres with dramatically less rewriting than migrating to plain PostgreSQL or another database would require. On top of the Oracle compatibility it adds enterprise security, performance and manageability features to Postgres, and it's the foundation for EDB's distributed high availability (PGD). Its core purpose is to let organisations escape Oracle's expensive licensing by moving their Oracle applications to open Postgres, without a massive application rewrite.

Ready to evaluate EDB Postgres Advanced Server?

Scope an Oracle-compatibility assessment (and the licensing saving), or let a TechBag advisor plan your migration off Oracle — in INR/GST.

Get Quote Book a Discovery Call

Stats, ratings, review counts and pricing are illustrative and sourced from public materials; verify before purchase.