H13-831_V2.0 · Question #4307
A large enterprise needs to replace its Oracle database with a GaussDB (for MySQL) master/slave database. During data synchronization, the business needs to continue to provide read and write…
The correct answer is A. True. DRS supports online, live migration from Oracle to GaussDB (for MySQL) while keeping read/write services active - making option A correct. DRS handles schema changes like ADD COLUMN on table T mid-migration through its DDL synchronization capability, so the business doesn't…
Question
A large enterprise needs to replace its Oracle database with a GaussDB (for MySQL) master/slave database. During data synchronization, the business needs to continue to provide read and write services, and the business may add columns to table T at any time. In this scenario, the Data Replication Service (DRS) can be used to support migration.
Options
- ATrue
- BFalse
How the community answered
(61 responses)- A84% (51)
- B16% (10)
Explanation
DRS supports online, live migration from Oracle to GaussDB (for MySQL) while keeping read/write services active - making option A correct. DRS handles schema changes like ADD COLUMN on table T mid-migration through its DDL synchronization capability, so the business doesn't need to freeze operations or halt the migration when columns are added. This combination - zero-downtime migration + continuous DDL change support - is precisely the use case DRS is designed for.
Option B is wrong because it implies DRS cannot handle this scenario, which contradicts DRS's core feature set: it is explicitly built for heterogeneous database migrations (Oracle → GaussDB/MySQL) with minimal disruption and online schema change support.
Memory tip: Think of DRS as a "live wire" between databases - it keeps current flowing (read/write traffic) while also carrying changes (DDL/DML sync), so you never have to cut the power to rewire.
Topics
Community Discussion
No community discussion yet for this question.