DB2 9 & 10 for z/OS Overview

Migration Planning WorkshopConverged TEMP Space (continued)• IFCID 002 & 343 updated to report usage and exceptions– Make sure to review PK70060 & PK92163• Soft separation of sort workfile and DGTT requests (DB2 Managed Only)• Work files marked unavailable after extents– PM02528• ZParm WFDBSEP for hard separation of workfile and DGTT usage– II14587 – DB2 9 workfile recommendations• Access is virtualized for small amounts of data, eliminating costof work file creation (reduced CPU and I/O)– At runtime, a result fitting in 1 data page does not create a workfile– ORDER BY and FETCH FIRST n ROWS without index support• Uses memory replacement technique if result fits within a 32k page• Sort is avoided204© 2011 IBM Corporation