|Date: ||Wed, 15 May 2002 14:24:32 +0200|
|Reply-To: ||Ulrike Grömping <ugroempi@FORD.COM>|
|Sender: ||"SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>|
|From: ||Ulrike Grömping <ugroempi@FORD.COM>|
|Organization: ||Ford Motor Company|
|Subject: ||storage space problems|
|Content-Type: ||text/plain; charset=us-ascii|
I am confused about SAS' usage of storage: When do I need space in the
work library, and when do I need it in the permanent library ?
I will have to handle some very large data sets, and have just started
with a roughly 800MB/3.5Mio observation dataset (PC). I have two
partitions on my computer, and had assigned the permanent library to the
partition with less free space (D:), assuming that I would need just
enough space for accomodating the data set.
However, even though I could not find a physical file causing the
problem, a data step with a merge, that did not change the size of the
permanent data set, resulted drive D: running out of space. When I
reallocated the permanent library to the larger partition, all went
well. Does anybody know, how SAS handles space in the data step, i.e.:
- When does it use the work library ?
- When does it use the permanent library instead?
- Where does it write onto the disk, if the disk gets fuller and fuller,
while I can't find the file that causes this ?