Can My Oracle Database Migrate? - Database Migration Guide
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Can My Oracle Database Migrate?

To quickly see if your workload qualifies as a migration candidate, please use the DMA Connect Application and Database Questionnaire to sort out migration obstacles specific to your application. Consider the following questions. The more you answer No, the easier the migration to Amazon RDS for PostgreSQL or Aurora PostgreSQL will be.

Application Questions Comments

Are there Oracle dependent parts of the application that you can’t modify by yourself?

If you don’t control all of the code it can be difficult to change the underlying database.

Is the application commercial off the shelf, and not available for PostgreSQL?

Unless the commercial off-the shelf software (COTS) application also supports PostgreSQL, it will not be able to migrate.

Does the application use specific methods to connect to an Oracle database such as Oracle Call Interface (OCI)?

Refactoring OCI calls to ODBC is not impossible, but typically an involved process.

Does the application use Oracle specific libraries?

It could be challenging finding PostgreSQL replacements for Oracle specific libraries.
Database Questions Comments

Does the database use any third party packages?

It could be challenging finding PostgreSQL replacements for Oracle specific packages.

Does the database use any data cartridges?

It could be challenging finding PostgreSQL replacements for Oracle specific cartridges.

Does the application use Oracle Forms or Application Express (APEX)?

Completely replacing Forms or APEX with a non-Oracle solution is substantial.

Does the database use SQLJ or .NET stored procedures?

You can refactor external stored procedure code for use with PostgreSQL, but it adds development work.

Does the database use Oracle Streams?

Some refactoring is required to replace Oracle Streams with a PostgreSQL-compatible solution.

Does the database use Oracle Multi Media?

Some refactoring is required to replace Oracle Multi Media with a PostgreSQL-compatible solution.

Does the database use Oracle Locator?

Depending on feature use, such a solution may be refactored to work with PostGIS 3.1.

Does the database use Oracle Java Virtual Machine (JVM)?

Detaching a Java application from Oracle JVM can be involved development work.

Does the database use Oracle Machine Learning or formerly Advanced Analytics?

The solution will have to be refactored to use similar functionality on Amazon.