How do QVD files affect RAM?

[jblomqvist]

Hi,

Can anybody please tell me if using QVD files affects RAM?

Is it a positive affect?

[maiconmello]

Only at the time of reading. If you are transforming some data using a group by , something gênero.Depois the application, you can usually affect when climbing the QVD data to memory and contain foreign key, Cartesian product etc.

[Colin-Albert]

A QVD file is a way of storing data on disk that will load into QlikView quickly.

QVD files do not consume RAM until they are loaded into your application.

[jblomqvist]

So it is only until the loading process that RAM gets used by QVD files?

[amit_saini]

John,

Check:

https://community.qlik.com/message/371514#371514

Thanks,

AS

[jblomqvist]

But does QVD files consume RAM after the data has been loaded into a QlikView application?

[ankit777]

hi

QVD do not consume any RAM.

It consumes space on you disk only. You can use these QVD to load data in a QVW. This QVW will consume RAM.

Thanks

[Colin-Albert]

To clarify, it is the data loaded into the application (QVW), the number of users accessing that application and the cached calculations that consume RAM, not the QVD files.

[asgardd2]

QVD- is a format QlikView data, storing data in a special way. So, after storing , qvd-files can be loaded into QlikView applications.

If you do not put logic conditions (except exist) and load a table with no processing from qvd file - loading into memory is very fast. (Optimized load)

[agni_gold]

Ankit777 has explained correctly .