RE: database sizing estimates using partitioned indexe

  • From: "Michael McMullen" <ganstadba@xxxxxxxxxxx>
  • To: <oracledbaquestions@xxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
  • Date: Tue, 30 Sep 2008 14:37:04 -0400

I think user_segments would do the job nicely.  What's wrong with using
segment_name along with partition_name?

 

  _____  

From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Dba DBA
Sent: Tuesday, September 30, 2008 2:10 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: database sizing estimates using partitioned indexe

 

We partitions by day and by month depending on the table. All of our
partitions have names of the form

PART_YYYYMMDD or PART_YYYYMM

I am trying to calculate sizing estimates/day and by month (so they can stay
ahead of adding storage). 

since all my partitions have the same name, user_segments is not useful. 
for data I was using using_tab_partitions and taking blocks*blocksize to get
the size/day. 

I see "leaf blocks" in user ind_partitions. Not sure if that is enough
blocks to get a good estimate per day. Note that 1 partition is one day or 1
month. 

any suggestions ? 

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