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- At the end of the day, every extra index means another write to a disk (be it SSD or spinny). Adding a materialised view means another write, and possibly more reads (depending on the MV). The overhead doesn't sound unreasonable.Philᵀᴹ– Philᵀᴹ2013-12-04 23:13:30 +00:00Commented Dec 4, 2013 at 23:13
- Thanks Phil - are you able to advise on the necessity of the indexes on the columns related to the primary keys on the source tables? I've checked my SQL explain plans and they don't use them, I'd originally added them in case they were needed to speed up the synching process on the MQT with the source tables (MQT is live). Perhaps they're not needed?sapatos– sapatos2013-12-05 03:43:57 +00:00Commented Dec 5, 2013 at 3:43
- What version of db2 are you using?Lennart - Slava Ukraini– Lennart - Slava Ukraini2015-01-04 15:01:50 +00:00Commented Jan 4, 2015 at 15:01
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