Frank,
IBM has a "DB2 for i" page full of links that could be of help, you can
find it here:
http://www-03.ibm.com/systems/i/software/db2/awp.html
Regarding SQL optimization, there are a couple of Redbooks that, although
somewhat dated, provide a good starting point:
* DB2 Universal Database for iSeries Administration: The Graphical Way on
V5R3
http://publib-b.boulder.ibm.com/abstracts/sg246092.html?Open
* SQL Performance Diagnosis on IBM DB2 Universal Database for iSeries
http://publib-b.boulder.ibm.com/abstracts/sg246654.html?Open
HTH,
Luis Rodriguez
IBM Certified Systems Expert — eServer i5 iSeries
