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Special Guest: Steve Rees, Performance Specialist, IBM Canada
Top DB2 LUW Performance FAQs, Part 2100% of our studio audience learned something! Steve talked about monitor table functions and admin views, strange numbers in the monitors, literals versus parameter markers in dynamic SQL, the Statement Concentrator (STMT_CONC) - when to use it and when not to use it, improving performance of LOBs, temporary tables, virtualizing DB2 workloads, tips for large partitions, and much more!!! Watch and learn... |
Show Host Scott Hayes Commentary
Steve Rees has been with IBM for over 22 years and has worked on DB2 for LUW performance for the past 15 of those years. I was taking notes as fast as I could, and I'll be watching this replay! You can't watch this replay and NOT learn something! I was particularly impressed by discussion of monreport.dbsummary, monreport.pkgcache, monreport.currentsql, monreport.connection, monreport.lockwait, and monreport.currentapps. Also, Steve's insights on when to use, and when NOT to use, the DB2 Statement Concentrator (STMT_CONC) were quite insightful.
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WMV Format
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the link below and choose "Save As..."
Episode #91, 21 September 2012,
DB2 LUW Performance FAQs, Part 2, with Steve Rees, IBM
MP4 Format
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BONUS MATERIAL!
During the show, Steve shared with us his "magic" SQL for listing all of the available monitor table functions and administrative views from DB2's catalog. Here's the SQL:
select
substr(P.ROUTINENAME,1,32) as ROUTINENAME,
substr(P.SPECIFICNAME,1,32) as SPECIFICNAME,
case when P.ROWTYPE in ('B','O','P') then CHAR('IN',3)
else CHAR('OUT',3) end as IN_OUT,
cast(p.ORDINAL as char(3)) as ORD,
substr(P.PARMNAME,1,40) as PARMNAME,
substr(P.TYPENAME,1,16) as TYPE
from sysibm.sysroutines r, sysibm.sysroutineparms p
where p.routineschema=r.routineschema
and p.routinename=r.routinename
and p.specificname=r.specificname
and r.function_type='T'
and substr(r.ROUTINENAME,1,4) in ('SNAP','MON_','ENV_')
order by P.ROUTINESCHEMA,
P.ROUTINENAME,
P.SPECIFICNAME,
IN_OUT,
P.ORDINAL
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