As with the catalog information, the graphic analysis section for ESDS clusters is very similar to the data component analysis for KSDS clusters. Since the graphs themselves are identical, we don't need to go over them again, but the column totals are slightly different.
This is the total number of data records found in the control interval. When the CI contains a portion of a spanned record, the literal SPAN will appear in front of the record count. A value of zero is displayed for the first and any intermediate segments of the spanned record, and a value of one is displayed for the last segment.
This is the total number of characters found in all of the data records in this control interval.
This is the number of bytes that CA Disk considers to be unusable in the control interval. Since ESDS clusters can only have records added to the end of the data set, any unused space in control intervals prior to the last one is dead space (that's why there's no freespace column on this graph). You can see some ESDS clusters — particularly IMS, CICS, and VVDSs — with a lot of dead space shown for them. These data sets are preformatted with dummy records (for various reasons) and do not look identical to pure ESDS clusters. Because of this, CA Disk cannot give an accurate picture of free and dead space in the last control area of the data set.
This is the number of bytes required to hold the system control information.
This is the percentage of the control interval considered to be unusable. It is calculated by dividing the number of dead bytes by the control interval size.
As with the preceding sections of the ESDS report, this section is basically a subset of fields described for the KSDS data component. See that section of the manual for a description of the appropriate fields.
|
Copyright © 2015 CA Technologies.
All rights reserved.
|
|