Oracle schemas under version control

Oracle Database Design, ER Diagrams, and Schema Governance

DbSchema reads the Oracle catalog and renders it as an interactive model: diagrams both DBAs and application developers can read, documentation auditors can browse, and changes deployed as reviewed DDL.

  • Import tables, views, indexes, and relationships from every schema you can access
  • Trace foreign keys and synonym dependencies across schema boundaries
  • Compare environments and generate the DDL for controlled deployments
  • Hand auditors documentation instead of database credentials
available for ISO-27001 certified ISO-27001 certified
Free Community Edition No signup required 15-day Architect trial included
Free Download
DbSchema showing an Oracle ER diagram and schema documentation
100+ Databases
|See All   >

Trusted by teams at

Coca cola
Coca cola

Decades of Schemas, Synonyms, and Links —
and the Map Lives in Someone's Head

An Oracle estate accumulates structure: user-owned schemas spread across tablespaces, synonyms layered on synonyms, database links, partitioned tables, privileges nobody dares touch. Understanding it means querying DBA_TABLES and DBA_CONSTRAINTS by hand — knowledge that leaves with every retirement.

DbSchema imports the catalog into one interactive model, so the whole team can read the structure instead of reconstructing it.

Understand, Govern & Evolve
Oracle Schemas Visually

Catalog import, cross-schema diagrams, reviewed DDL — governance the whole team can follow.

Reverse engineer an Oracle schema into an ER diagram
Import the Catalog, Skip the DBA Views

DbSchema reads Oracle catalog metadata and renders the object graph — tables, views, indexes, relationships — with no hand-written queries against system views.

Diagram multiple Oracle schemas together
Diagram Across Schema Boundaries

Place objects from several Oracle schemas on a single diagram and follow the foreign keys and synonym dependencies that connect them — tablespace assignments stay visible in the model.

Compare Oracle schemas across environments
Promote Changes Between Environments

Compare development, test, and production, review every difference, and produce the DDL migration script for sign-off before deployment.

Oracle-aware SQL editor with autocomplete
Autocomplete for Oracle SQL and PL/SQL

Completion for keywords, tables, columns, and built-in functions; execute against the instance, or draft against the offline model when no connection is available.

Generate HTML documentation for an Oracle database
Documentation Without Database Access

Publish an HTML documentation set — descriptions, column types, constraints, embedded diagrams — for auditors and stakeholders who should never see a login prompt.

Monitor Oracle sessions and locks in DbSchema
Watch the Instance While You Work

Track sessions, locks, users, and resource usage without leaving the workspace you design in.

Governance needs a model, not a memory.

Production Is the Record
The Model Is the Plan

Enterprise change control needs a design that exists apart from the running instance. DbSchema's model file is that artifact — reviewable, versionable, and deployable on your schedule.

Plan Oracle schema work offline
Plan Without a Connection

Prepare the schema work before the change window opens.

Keep an audit trail of Oracle schema changes in Git
Keep an Audit Trail

Every model revision is a commit with an author, a date, and a reason.

Review the generated Oracle DDL
Review the DDL

Read each generated statement before it reaches an instance.

Deploy Oracle changes under control
Deploy Under Control

Walk the approved change through test and into production, deliberately.

An Audit Trail for Schema Changes,
Built on Git

Branch the model, review the diff, merge, then deploy the generated DDL environment by environment — a paper trail from proposal to production that satisfies the DBA and the auditor alike.

Oracle schema synchronization between the Git model and database instances
Read Git Workflow Docs

The Schema Handbook
Nobody Had Time to Write

Generate a complete HTML documentation set from the model — table descriptions, column types, constraint definitions, embedded ER diagrams — and share it with the people who need answers but not access.

Explore the Documentation Tool

Auto-generated HTML documentation for an Oracle schema

AI Answers, Grounded in Your Oracle Model

Ask what a twenty-year-old procedure actually does, describe the report you need, or ask why a query crawls. The Assistant consults your design model, so its answers reference your actual schemas and tables.

See What the AI Assistant Can Do

DbSchema AI assistant answering questions about an Oracle schema

Watch: An Oracle Schema
on the Design Canvas

Connecting to Oracle and working with the schema visually (4 min). DbSchema can download and configure the Oracle JDBC driver (ojdbc) when you create the connection.

Both Thin and OCI driver modes are supported. Point the connection at the listener — port 1521 by default — with Thin URLs of the form jdbc:oracle:thin:@//host:1521/service_name; prefer the service name over the SID on Oracle 12c and later. For Oracle Cloud Autonomous Database, download the wallet ZIP from the console, set the oracle.net.tns_admin JVM property to the wallet directory, and connect with jdbc:oracle:thin:@tns_alias matching an entry in tnsnames.ora.

DbSchema and Oracle SQL Developer

Oracle SQL Developer — with its companion Data Modeler — is Oracle's own free workbench, strongest at PL/SQL development and DBA tasks inside the Oracle ecosystem; DbSchema answers with one design-first tool across every database you run, and the two complement each other.

DbSchema Oracle SQL Developer
Supported databases 100+ engines beyond Oracle Oracle-centric (third-party connections for migration)
Data modeling Interactive ER diagrams with multiple layouts per schema Separate SQL Developer Data Modeler application
Git-friendly offline model Yes — project file designed for review, with Git integration (Pro) Design files managed per tool
Schema compare across environments Diff any two databases or models, generate reviewed DDL (Pro) Database diff features within the Oracle toolset
Interactive HTML5 documentation Yes — searchable diagrams with comments (Pro) Reports oriented to the Oracle catalog
PL/SQL development and debugging SQL editor with Oracle-aware autocomplete Yes — dedicated PL/SQL tooling
Price Free Community edition; paid Pro with 15-day trial Free

Based on typical current usage of both tools; capabilities change between releases — consult Oracle's documentation for specifics.

Map Your Oracle Estate in Diagrams

Turn an undocumented schema into a model the whole team reads — free, no signup.

Download Free

Tutorials and guides

Frequently asked questions

Yes. Reverse engineering imports tables, views, indexes, and relationships so you can review Oracle-specific structures in context on the diagram.

DbSchema focuses on visual schema design across 100+ databases, with a Git-friendly model file and interactive HTML documentation. SQL Developer is Oracle's own workbench and is strongest for PL/SQL development — the two complement each other.

Yes. DbSchema generates migration scripts after comparing development, test, and production models.

Yes. The free Community edition covers reverse engineering, interactive ER diagrams, and the SQL editor; Pro adds schema synchronization and documentation, with a 15-day trial.

The Oracle JDBC driver (ojdbc). DbSchema can download and configure it when you create a new connection.

Teams working with Oracle often use these engines too. Explore dedicated guides and JDBC setup for each.

Browse all 100+ supported databases