Vacuuming & Autovacuum: Managing Bloat and Wraparound Quiz Home › PostgreSQL DBA › Vacuuming & Autovacuum: Managing Bloat and Wraparound 🧹 Postgres Database Administration – Vacuuming & Autovacuum: Managing Bloat and Wraparound 20 questions · 15 min timer · Explanations included · Free 1. What is the consequence of setting 'autovacuum_analyze_scale_factor' too low? It may lead to excessive CPU usage due to frequent analyze operations. It may cause insufficient vacuuming leading to bloat. It may increase the risk of transaction ID wraparound. It may cause data corruption due to frequent data writes. None Show Hint Setting 'autovacuum_analyze_scale_factor' too low can result in frequent analyze operations, which can increase CPU usage and potentially impact performance. 2. What is the role of the 'freeze' operation during a VACUUM? To prevent transaction ID wraparound by marking tuples as frozen. To reset the transaction log. To compress the table data. To update the visibility map. None Show Hint The 'freeze' operation marks tuples with a special frozen transaction ID, preventing them from being affected by transaction ID wraparound. Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Loading questions... Click Submit to see your final score! Previous Start Quiz Next Time's up
