|
|
|
NOSDB specifies that compressed data sets should not be reblocked using System Determined Block size to calculate the optimum block size of the compressed data set. The default is for CA Compress to return the
user-specified uncompressed block size, but for the compressed data to be actually written with optimum blocks. This improves compression and I/O performance, but this may cause problems if you specify the smaller BLKSIZE in JCL when you read the data set. NOSDB is intended as a conversion aid while correcting such JCL. You may specify or override NOSDB for individual data sets by specifying SDB=NO or SDB=YES on the ADD or ALTER CFMU control statement. When you code the SUBSYS parameter, you may code SDB=YES or SDB=NO as a subparameter of SUBSYS to control the option for that execution.
//ZSAMSTC PROC SPARM='NOSDB'
| Copyright © 2012 CA. All rights reserved. |
|