Is there a way to detect how full a datastore really is?

Products

• Bind Analyzer for DB2 for z/OS
• SQL-Ease for DB2 for z/OS
• SYSVIEW Performance Management Option for DB2 for z/OS
• Plan Analyzer for DB2 for z/OS
• Subsystem Analyzer for DB2 for z/OS

Issue/Introduction

After a datastore has reached full size - as the quantity of transactions to capture reduces, is there any way to detect how full a detector datastore really is?  In other words, how do i know to what smaller size i can resize the datastore? Will lLISTCAT show me anything meaningful?

Environment

Release:
Component: PDT

Resolution

Since the datastore is a collection of VSAM datasets, you can use the LISTCAT command to see its space utilisation information. The IDCAMS LISTCAT ALL will show you the high allocated and high used RBA.The percentage of space used can be calculated as: (Hi-used / Hi-alloc) * 100 = %Used