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Shrink tablespace [message #459590]

Mon, 07 June 2010 06:14

Riyasbasha
Messages: 25
Registered: March 2010

Junior Member

Hi all

I have a tablespace with 5GB size, data in the tablespace is 4.8GB
if i want to shrink the tablespace then much size could be shrinked.

can anyone let me know plz.

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Re: Shrink tablespace [message #459592 is a reply to message #459590]

Mon, 07 June 2010 06:20

Michel Cadot
Messages: 68767
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

With or without reorganizing objects?

Regards
Michel

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Re: Shrink tablespace [message #459595 is a reply to message #459592]

Mon, 07 June 2010 06:25

Riyasbasha
Messages: 25
Registered: March 2010

Junior Member

Without reorganizing the objects.
and tel me for other also(with object) please

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Re: Shrink tablespace [message #459596 is a reply to message #459595]

Mon, 07 June 2010 06:35

Michel Cadot
Messages: 68767
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

1/ without, check last extent in each file (dba_extents) and you will know how much you can shrink these ones (files)
2/ with, sum the extents in each file (or sum the free space in each file) then you will how much space you can get back after moving the objects (export/import for instance). This is a lower limit has with export/import you compact the space in the objects and so can more likely retrieve more

Regards
Michel

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Re: Shrink tablespace [message #459601 is a reply to message #459596]

Mon, 07 June 2010 06:43

Riyasbasha
Messages: 25
Registered: March 2010

Junior Member

thank you michel

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