Finding Avg Row Length size

Hi All,
How we can find Avg row length size of a table, without inserting data into a table. This is required to basically estimate table size (roughly). We might need to this for at least 100+ tables.
regards,
vara

The average row length depends on the data you are inserting into the table.
You can easily compute an approximation of the max row length from Oracle’s data dictionary:
select
table_name ,
sum(data_length)
from
user_tab_columns
group by
table_nameLet’s say we have a table with a number(10) and a varchar2(1000) column. For a data set where the varchar2 column contains at least 900 characters we would get average row size of 900+. For the same table, but with another data set where the varchar2 column has fewer than 50 characters, we would get average row size of less than 100.
Iordan Iotzov
http://iiotzov.wordpress.com/

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Message was edited by:
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