PCDE Migrate data solutions Practice Question
A company is performing a heterogeneous migration from Oracle to Cloud SQL for PostgreSQL using Ora2Pg. During testing, they find that a stored procedure using Oracle's PL/SQL `DBMS_OUTPUT.PUT_LINE` does not execute after conversion. What is the most likely issue, and how should it be resolved?
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
✓
The procedure uses `DBMS_OUTPUT.PUT_LINE`, which should be replaced with `RAISE NOTICE` in PostgreSQL.
Ora2Pg converts PL/SQL to PL/pgSQL. `DBMS_OUTPUT.PUT_LINE` in Oracle is equivalent to `RAISE NOTICE` in PostgreSQL. Ora2Pg may not automatically convert all procedural constructs, requiring manual review and adjustment.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The procedure uses `DBMS_OUTPUT.PUT_LINE`, which should be replaced with `RAISE EXCEPTION`.
Why it's wrong here
`RAISE EXCEPTION` is for errors, not output.
- ✗
The procedure uses `DBMS_OUTPUT.PUT_LINE`, which is supported natively in PostgreSQL.
Why it's wrong here
PostgreSQL does not have `DBMS_OUTPUT`.
- ✓
The procedure uses `DBMS_OUTPUT.PUT_LINE`, which should be replaced with `RAISE NOTICE` in PostgreSQL.
Why this is correct
Correct. `DBMS_OUTPUT.PUT_LINE` is Oracle-specific; in PostgreSQL, use `RAISE NOTICE`.
- ✗
The procedure must be rewritten in Python using PL/Python.
Why it's wrong here
Unnecessary; use PL/pgSQL with `RAISE`.
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