Db2 v7 and v8 weirdness

Lee Robertson

Db2 v7 and v8 weirdness
Hi,

AIX 5.2 DB2 v7.1 and DB2 v8.2

We recently migrated a database from 7 to 8 as detailed above and now find
one of our queries performance has crashed through the floor.

Basically, a table is dynamically created and then rows inserted into it,
this table is then updated.

Previously the update step took about 30 secs at v7 but at v8 this now
just runs and runs.

Anyone seen this type of behaviour before ? In neither case (v7 or v8), is
a runstats done after the insert and prior to the update.

Regards

Lee

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