DB2 11 for z/OS: Setting Aside Space for Updates
Robert's Db2
MAY 28, 2015
A DB2 table space is well-organized when rows are physically located where they should be per the clustering index of the associated table. Because a high degree of "clustered-ness" is a desirable quality of a table space (mostly for performance reasons), a DB2 DBA will often take steps to preserve row sequencing between REORGs. One such step that is very commonly executed is the setting aside of space in a table space's pages to accommodate inserts of new rows (relevant for a table that is clus
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