What are the consequences of disabling the Vacuum function in a PostgreSQL database?

Disabling the Vacuum function in PostgreSQL leads to the accumulation of "dead" tuples, which remain after data updates and deletions. This causes several negative consequences:

• Increase in database size — due to uncleaned table rows and indexes occupying more space.
• Decrease in query performance — the planner and executor process more data, slowing down operations.
• Locking issues — as dead tuples accumulate, the likelihood of conflicts and locks increases.
• Automatic file extension of tables — which can lead to fragmentation and degraded IO.

Vacuum helps free space and update statistics for query optimization. Without it, the database gradually degrades, requiring manual intervention and potentially leading to downtime.