MonetDB, data loss in restart server

Ying Zhang Y.Zhang at
Thu Apr 2 23:16:39 CEST 2015

Hello Luciano,

Thanks for using monetdb, and sorry for the inconvenience.
Would you please give us some background information about your setting:

- which OS?
- hardware spec. of your system
- which monetdb version?
- what does your query do?
- when and how did the database stop?  If the monetdb server stopped, did it give any error message?
- what's at the end of the merovingian log?

With kind regards,


> On Apr 01, 2015, at 06:46, Luciano Sasso <luciano at> wrote:
> Hello,
> I have used the MonetDB in production for some time, and I have nothing to complain about,
> are tables with more than 30 columns and 30 million records, do analysis through cubes in Pentaho / Saiku. 
> Have restarted the server several times, and never had problems with loss of data.But today, 
> after performing a query that was consuming a lot of machine, stopped the database, and when I started, 
> data from some columns were blank. How can it, will the data were still uncommitted? 
> when performing a query the MonetDB changes the data or reorganized? which may have occurred, I am concerned.
> -- 
> <Slice_01.png>	<Slice_02.jpg>
> Luciano Sasso Vieira 
> Gestor - Inteligência de Negócios 
> luciano at   |   tel: 17 3353-0833   |   cel: 17 9706-9335
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