System Options under z/OS |
Specifies when operating system buffers that contain contents
of permanent SAS files are written to disk.
Default: |
SAS
|
Valid in: |
configuration file, SAS invocation
|
Category: |
Files: SAS Files
|
PROC OPTIONS GROUP= |
SASFILES
|
z/OS Specifics: |
all
|
See: |
FILESYNC= System Option in
SAS Language Reference: Dictionary
|
FILESYNC= SAS | CLOSE | HOST
|
- SAS
-
specifies that SAS requests the operating system to force
buffered data to be written to disk when it is best for the integrity of the
SAS file. SAS is the default value.
- CLOSE
-
specifies that SAS requests the operating system to force
buffered data to be written to disk when the SAS file is closed.
- HOST
-
specifies that the operating system schedules when the buffered
data for a SAS file is written to disk.
By using the FILESYNC= system option, SAS can tell the
operating system when to force data that is temporarily stored in operating
system buffers to be written to disk. Only SAS files in a permanent SAS library
are affected; files in any temporary library are not affected. The FILESYNC=
system option affects only SAS files in UFS libraries.
For direct access bound libraries and sequential access bound libraries,
updates to files are performed as if FILESYNC=SAS has been specified, regardless
of the setting of the FILESYNC option.
The HSSAVE system option, not FILESYNC, controls the timing for file
updates to be committed to disk for members of DIV libraries. When the HSSAVE
option is in effect, processing is equivalent to FILESYNC=SAS being in effect.
The FILESYNC option has no effect on processing for DIV
libraries.
Copyright © 2009 by SAS Institute Inc., Cary, NC, USA. All rights reserved.