Subject RE: [firebird-support] Why does Firebird write so much data for simple select queries?
Author Leyne, Sean
> Two things come immediately to mind:

In addition to Doug 2 items, there is one other item:

Garbage Collection -- Due to the MVCC nature of the engine, SELECT queries can find back-versions of records which need to be cleaned up. Depending on the version (Superserver, Classic and SuperClassic) of the engine you are running, you could see a lot disk write activity as the engine cleans up those back-versions.


Sean