Hello, I try to understand the use of disk space after disk full. I look at the files in the folder base /bat/ root@groupelemonde:/var/lib/monetdb/lemonde# ls -l bat/06/676.* -rw------- 1 monetdb monetdb 1579876352 oct. 15 17:42 bat/06/676.tail -rw------- 1 monetdb monetdb 3606183936 nov. 28 15:03 bat/06/676.theap And i look sys.storage SELECT location,columnsize,heapsize FROM sys.storage WHERE location LIKE '06/676'; +----------+------------+------------+ | location | columnsize | heapsize | +==========+============+============+ | 06/676 | 1579850648 | 3606183936 | 676.tail is columnsize column 676.theap is heapsize column but I have 2 large file (> 100 Go) root@groupelemonde:/var/lib/monetdb/lemonde# ls -l bat/06/670.* -rw------- 1 monetdb monetdb 120641335296 nov. 28 14:28 bat/06/670.tail root@groupelemonde:/var/lib/monetdb/lemonde# ls -l bat/06/636.* -rw------- 1 monetdb monetdb 144702111744 nov. 28 12:32 bat/06/636.tail sql>select location,columnsize,heapsize from sys.storage WHERE location IN ('06/636','06/670'); 0 tuples (34.050ms) the modification time of two files is identical to the full disk on my server. Is what I can delete these 2 files ? Pierre -- 1G6 52 route de bischwiller 67300 Schiltigheim Société de Services et de Formations en Logiciels Libres http://1g6.biz Tél : 06 64 63 70 35