Ideas on Percentage share of DB (data base) by different BW objects

Question

Dear experts,
In our system, Different BW objects have the following share of DB (source ST14). What are your ideas on these numbers? Do these numbers seem Ok? Are they comparable to the numbers you have in your productive systems? Is there any thing that you think needs our immediate attention? Is there any benchmark from SAP about these % numbers?
Type     Size of BW Objects (% Share of DB)
OTHER                     35,04%
PSA                             34,00%
ODS                             0,01%
F-Fact                          0,04%
E-Fact                          0,17%
Aggregate                       30,42%
Master Data/Other BW Table      0,29%
CHANGELOG                       0,03%
Thanks in advance for your ideas.

Answer 1

These numbers seem very strange to me.
Your actual information in the BW system, i.e.
ODS 0,01%
F-Fact 0,04%
E-Fact 0,17%
Master Data 0,29%
is only 0,5% of your database. Hence 99,5% of your data base is redundant information!
Allthough redundant information is important in a BW system, this is too much. Are you sure these numbers are correct?
'PSA' and 'CHANGELOG' can be used for data validation and easier reload, but should be deleted, when they are no longer used.
'Aggregate's improve reporting performance.
'OTHER' tables are usually standard table, you cannot affect.