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System z Technical Conference, San Antonio TX
Last week I was at the System z Tech Conference (again getting my zeds mixed up with my zees). :-) I presented 4 times, one of which was a repeat. What's especially nice is that I got 87 attendees for the "Memory Matters in 2008" presentation - spread across 2 sessions. This was despite the second time being the very last session of the conference... and 22 people still showed up to that! So... [More]
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2 More DB2 Access Path APARS
Here are a couple more SQL processing APARs. APAR PK22814 for Version 8 ESTIMATED SUBQUERY COST IS TOO HIGH WITH SORT MERGE JOIN. The APAR text says Correlated subquery cost is over-estimated for sort merge join. A well-performing sort merge join plan might not be chosen by DB2. Correlated subquery cost can be overestimated for sort merge join. This may cause a sort merge join plan that performs... [More]
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