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Archives of the TeradataForum
Message Posted: Mon, 27 Mar 2006 @ 18:32:00 GMT
Subj: | | Re: PPI Range Maintance |
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From: | | Keith_kdb |
Fachtna,
I recently managed a database with a number of large tables with PPI defined. We managed the advancement of the PPI partitions using metadata
and stored procedures. The reason we used this method was due to the number of tables with PPI and the fact that we chose to run the process
monthly (a number of tables were partitioned daily). This allowed the process to be scheduled and run frequently - hopefully avoiding the
situation whereby it was forgotten to be run and help ensure it runs smoothly.
With regard to stats, be careful. If you load data that populates a new partition and you don't collect stats on the partition column, you will
almost certainly get some BAD plans as the optimizer expects zero rows from that partition.
Regards
Keith.
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