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Deployment and MigrationmediumMultiple ChoiceObjective-mapped

DBS-C01 Deployment and Migration Practice Question

A company is migrating an on-premises Oracle database to Amazon Aurora PostgreSQL. They used AWS SCT to convert the schema, but some stored procedures failed to convert automatically. What is the best course of action?

⚠ Common exam trap

Test-takers frequently assume AWS DMS can handle stored procedure migration (Option B) because DMS handles schema conversion for tables, but DMS explicitly does not migrate stored procedures, triggers, or other programmatic objects.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Manually rewrite the unconverted stored procedures to PostgreSQL-compatible code based on SCT's assessment report.

AWS SCT provides an assessment report that identifies unconverted stored procedures and suggests manual rewrites. Since Oracle and PostgreSQL have fundamentally different procedural languages (PL/SQL vs. PL/pgSQL), automated conversion cannot handle all syntax and semantic differences. Manually rewriting the unconverted procedures based on SCT's report ensures compatibility and correctness, as SCT highlights the specific lines and constructs that need attention.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Use AWS Lambda to automatically convert the stored procedures.

    Why it's wrong here

    Lambda is not a schema conversion tool; manual rewriting is required.

  • Use AWS DMS to replicate the Oracle stored procedures as-is to Aurora.

    Why it's wrong here

    DMS migrates data, not schema objects like stored procedures.

  • Switch to Amazon RDS for Oracle to avoid conversion issues.

    Why it's wrong here

    The goal is to migrate to Aurora PostgreSQL, not stay on Oracle.

  • Manually rewrite the unconverted stored procedures to PostgreSQL-compatible code based on SCT's assessment report.

    Why this is correct

    SCT provides a report of items that need manual attention; rewriting is necessary.

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