PCDE Migrate data solutions Practice Question
An organization is planning a database migration from Oracle to PostgreSQL on Cloud SQL. They have a large number of stored procedures that use Oracle-specific PL/SQL features. Which tool should they use to automate the schema conversion, including conversion of PL/SQL to PL/pgSQL?
⚠ Common exam trap
A common misconception is that Database Migration Service (DMS) can handle all aspects of migration including PL/SQL conversion, but DMS primarily handles data transfer and schema creation, not procedural code conversion, which requires a specialized tool like Ora2Pg.
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
✓
Ora2Pg
Ora2Pg is an open-source tool specifically designed to automate the migration of Oracle databases to PostgreSQL, including the conversion of Oracle-specific PL/SQL stored procedures into PL/pgSQL. It handles schema objects, data types, and procedural code, making it the correct choice for this scenario where PL/SQL conversion is a key requirement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Ora2Pg
Why this is correct
Ora2Pg is designed to convert Oracle schemas and objects to PostgreSQL.
- ✗
pglogical
Why it's wrong here
pglogical is a logical replication tool, not a schema conversion tool.
- ✗
pg_dump
Why it's wrong here
pg_dump is for PostgreSQL backups, not for converting Oracle schemas.
- ✗
Database Migration Service (DMS)
Why it's wrong here
DMS handles continuous migration and data replication but does not perform schema conversion for heterogeneous databases.
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