SA101I message attempting to view volume data within current and historical intervals following upgrade.

Document ID : KB000008627
Last Modified Date : 14/02/2018
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Issue:

Following release upgrade, CA Subsystem Analyzer for DB2 for z/OS (PSA) is returning message SA101I indicating that no volume activity was collected within the interval.

SA101I - NO VOLUME ACTIVITY COLLECTED THIS INTERVAL.

Reason:                                                      
                                                             
No volume activity has been collected for the interval being 
viewed. This implies that no pageset I/O activity has been   
seen for the DB2 subsystem (or any DB2 member for data       
sharing group displays) for the interval viewed. The volume  
display lists all volumes that have incurred DB2 I/O activity
within the interval being viewed.                            

Resolution:

To reduce PSA collection overhead, volume and dataset extent information is not
collected by default. Therefore, detailed information about the volume
and location of data on the volume is not recorded or displayed.
This option controls collection for both items because an extent resides
on a single volume. A dataset can span multiple volumes.

 

You can enable volume and extent information collection using either of the following methods:
- Enter Y for the Volume and Extent option on the second Initialize SS Analyzer Collection panel.
- Specify the VXT(Y) keyword in the START(SSA) MVS Modify command.


VXT(Y|N)

Specifies whether to collect volume and data set extent information. Both are
controlled by this option because an extent resides on a single volume. A data set
can span multiple volumes.

Specify one of the following operands:

Y
Collects volume and data set extent information. Selecting this option increases
collection overhead.

N
Does not collect volume and data set extent information. Detailed information
about the volume and location of data on the volume will not be recorded or
displayed. This value is the default.