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Calculation of initial extent size of table [message #452326]

Wed, 21 April 2010 06:12

Gangaprasad
Messages: 7
Registered: April 2010
Location: India

Junior Member

Hi all,

I need to create table A.
which will going have more than 8L records.
Daily this table A will truncate and reinsert all 8L records.
Also number of records(8L) will we increase 50K per month.
Please suggest what should be storage clause parameters
mainly initial and next extent.

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Re: Calculation of initial extent size of table [message #452327 is a reply to message #452326]

Wed, 21 April 2010 06:14

Michel Cadot
Messages: 68729
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Calculate the average size of your 8L(!) rows and use it at initial extent size.

Also use LMT with autoallocate management.

Regards
Michel

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Re: Calculation of initial extent size of table [message #452328 is a reply to message #452327]

Wed, 21 April 2010 06:18

Gangaprasad
Messages: 7
Registered: April 2010
Location: India

Junior Member

Thanks Michel,

can you provide me the formula or procedure to calculate average size of 8L rows.

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Re: Calculation of initial extent size of table [message #452329 is a reply to message #452328]

Wed, 21 April 2010 06:25

Michel Cadot
Messages: 68729
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Analyze the table and query user_tables.AVG_ROW_LEN column.

Regards
Michel

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