Specifies the number of extra page buffers to allocate for each
open SAS catalog.
Valid in: |
configuration file, SAS invocation, OPTIONS
statement, SAS System Options window
|
Category: |
Files: SAS Files
|
PROC OPTIONS GROUP= |
SASFILES
|
CBUFNO=n| nK | nM | nG | nT | hexX |MIN | MAX
|
-
n | nK | nM |
nG
| nT
-
specifies the number of extra page buffers
in multiples of 1 (bytes); 1,024 (kilobytes); 1,048,576 (megabytes; 1,073,741,824
(gigabytes); or 1,099,511,627,776 (terabytes). For example, a value of 8 specifies 8 bytes, and a value of 3m
specifies 3,145,728
bytes.
-
MIN
-
sets the number of extra page buffers to
0.
-
MAX
-
sets the number of extra page buffers to
20.
-
hexX
-
specifies the number of extra page buffers
as a hexadecimal number. You must specify the value beginning with a number
(0-9), followed by an X. For example, the value 0ax
sets the number of extra page buffers to 10 buffers.
The CBUFNO= option is similar to the BUFNO=
option that is used for SAS data set processing.
Increasing the value for the CBUFNO= option might result
in fewer I/O operations when your application reads very large objects from
catalogs. Increasing this value also comes with the normal tradeoff between
performance and memory usage. If memory is a serious constraint for your
system, you should not increase the value of the CBUFNO= option. Do not increase
the value of the CBUFNO= option if you have increased the value of the CATCACHE=
option.
- CAUTION:
- When using both the CBUFNO= and CATCACHE=
options, if one of the option's value is set higher than zero, the other option
must be set to zero.
![[cautionend]](../../../../common/63294/HTML/default/images/cautend.gif)
Operating Environment Information: The syntax that is shown here applies to the OPTIONS
statement. On the command line or in a configuration file, the syntax is specific
to your operating environment. For more information, see the SAS documentation
for your operating environment. ![[cautionend]](../../../../common/63294/HTML/default/images/cautend.gif)
Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.