You can
use the SASFILE statement to open a SAS data set. SAS
attempts to allocate enough buffers to hold the entire data set in memory.
If enough memory is available, then the entire data set is kept in memory
until the data set is closed. If enough memory is not available, then SAS
allocates as many buffers as it can. If your file is very large or if SAS
is already using a large amount of memory, then using the SASFILE statement
will not help.
When the SASFILE statement executes the first time, SAS opens the file.
Subsequent DATA and PROC steps use the file without having to open it again
because the file remains in memory. The file remains open until a second SASFILE
statement closes it, or until the program or session ends. For more information,
see SASFILE in
SAS Language Reference: Dictionary.
Copyright © 2010 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
