The answer is to use the AWS Schema Conversion Tool (SCT) to convert Oracle PL/SQL to PostgreSQL PL/pgSQL and the PostgreSQL oracle_fdw extension to enable access to Oracle objects. These two strategies minimize code changes by automating the heavy lifting of schema translation and allowing the new Aurora PostgreSQL database to reference legacy Oracle objects as foreign tables, reducing the need to rewrite complex stored procedures immediately. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of pragmatic migration paths that balance effort with functionality—a common trap is to assume Database Migration Service (DMS) handles procedural code, but DMS only moves data, not logic. Remember that SCT handles the conversion, while oracle_fdw acts as a bridge for unmodified Oracle objects. A useful memory tip: SCT for the schema, oracle_fdw for the foreign data wrapper—two tools, one smooth migration.
SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is migrating a legacy application that uses Oracle stored procedures to Amazon Aurora PostgreSQL. Which TWO strategies minimize code changes and migration effort?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the PostgreSQL oracle_fdw foreign data wrapper to access Oracle tables from Aurora PostgreSQL.
Options A and D are correct. Option A uses AWS SCT to automate schema conversion. Option D uses the PostgreSQL oracle_fdw extension to enable access to Oracle objects. Option B is wrong because DynamoDB is NoSQL. Option C is wrong because RDS for Oracle does not move to PostgreSQL. Option E is wrong because DMS does not convert stored procedures.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 the PostgreSQL oracle_fdw foreign data wrapper to access Oracle tables from Aurora PostgreSQL.
Why this is correct
FDW can reduce migration effort by allowing access to Oracle data.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
Use Amazon RDS for Oracle with cross-Region replication.
Why it's wrong here
This does not migrate to PostgreSQL.
✗
Use AWS Database Migration Service (DMS) to replicate data continuously.
Why it's wrong here
DMS replicates data but does not convert stored procedures.
✗
Migrate the database to Amazon DynamoDB and rewrite all application logic.
Why it's wrong here
DynamoDB is NoSQL and requires significant code changes.
✓
Use AWS Schema Conversion Tool (SCT) to convert Oracle PL/SQL to PostgreSQL PL/pgSQL.
Why this is correct
SCT automates conversion of schema and code.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SAP-C02 ACL questions on filtering logic and placement.
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use the PostgreSQL oracle_fdw foreign data wrapper to access Oracle tables from Aurora PostgreSQL. — Options A and D are correct. Option A uses AWS SCT to automate schema conversion. Option D uses the PostgreSQL oracle_fdw extension to enable access to Oracle objects. Option B is wrong because DynamoDB is NoSQL. Option C is wrong because RDS for Oracle does not move to PostgreSQL. Option E is wrong because DMS does not convert stored procedures.
What should I do if I get this SAP-C02 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SAP-C02 ACL questions on filtering logic and placement.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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