February 2003
Intermediate to advanced
360 pages
11h 25m
English
book
Moving Data Across the DB2 Family
by Paolo Bruni, Michael Ho, Marko Milek, Arne Nilsen, Jose Mari Michael Sanchez
Content preview from Moving Data Across the DB2 Family
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190 Moving Data Across the DB2 Family
7.8 HPU performance measurements
The new Version 2.1 of HPU performs better in CPU, when compared to DB2 for z/OS
Version 7 Unload, except in cases where small number of rows fetched are returned (case 7
and 9). HPU 2.1 is also showing comparable elapsed times with DB2 Unload (5% difference.)
The test cases are the following:
Case 1: UNLOAD FROM TABLESPACE
Case 2: UNLOAD FROM IMAGE COPY
case 3: UNLOAD SELECT * FROM TABLE
Case 4: UNLOAD SELECT COL A,COL B,COL C,COL D,COL E
Case 5: UNLOAD SELECT *
WHERE COL C <> '061' >>>>>>>>>>>>>>> non-indexed column
Case 6: UNLOAD SELECT COLA,COLB,COLC,COLD,COLE
WHERE COL C <> ...
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