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Problems Questions Roles Skills Interview Contest Leaderboard

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Mvcc

Mvcc

5 practice items · needed by 1 role

Easy 0Medium 3Hard 2

Practice questions

Why PostgreSQL needs VACUUMmedium
Disk not freed after a big deletemedium
Bloat from an idle sessionmedium
Transaction ID wraparoundhard
Index-only scan still reads the tablehard

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Roles that use Mvcc

Database Administrator5

Related skills

PostgreSQL Indexing Data Modelling Transactions High Availability Replication Query Tuning Backup Recovery MySQL Database Security Partitioning Automation

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