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importing last 3 months of data [message #685838]

Tue, 05 April 2022 15:44

varunvir
Messages: 389
Registered: November 2007

Senior Member

Hi Experts,
Is it possible using expdp to copy last 3 months of data from db into a new database?
or

Is it possible to import last 3 months to new database into new database using RMAN?

Thanks,
Varun

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Re: importing last 3 months of data [message #685839 is a reply to message #685838]

Wed, 06 April 2022 00:45

Michel Cadot
Messages: 68757
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Yes, no, maybe. It depends on your data or db architecture.

Are you able to determine the last 3 months data?
Have you a current date column in your tables?
Are your data in tablespaces depending on months, like partitioning by month?
...

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Re: importing last 3 months of data [message #685843 is a reply to message #685839]

Wed, 06 April 2022 08:05

varunvir
Messages: 389
Registered: November 2007

Senior Member

Hi Michel,

Are you able to determine the last 3 months data? yes
Have you a current date column in your tables? yes
Are your data in tablespaces depending on months, like partitioning by month? yes

Can I use feature flashback_time with expdp to extract 3 months of data?

Thanks,
Varun

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Re: importing last 3 months of data [message #685844 is a reply to message #685843]

Wed, 06 April 2022 08:40

Michel Cadot
Messages: 68757
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Quote:

Can I use feature flashback_time with expdp to extract 3 months of data?

No, it is the opposite you could use it to extract all but the last 3 months of data.

But you may use the QUERY parameter, something like:

Code: [Select all] [Show/ hide]

QUERY="WHERE date_col BETWEEN add_months(sysdate,-3) AND sysdate"

[Edit:missing word]

[Updated on: Thu, 07 April 2022 00:15]

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Re: importing last 3 months of data [message #685853 is a reply to message #685844]

Wed, 06 April 2022 15:18

varunvir
Messages: 389
Registered: November 2007

Senior Member

Thanks Michel

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Re: importing last 3 months of data [message #685854 is a reply to message #685843]

Wed, 06 April 2022 15:51

EdStevens
Messages: 1376
Registered: September 2013

Senior Member

Quote:

Are you able to determine the last 3 months data? yes

How are you able to make this determination? Do all of your tables include something like a 'last_update_date' column? Even tables where the data is not 'dated', is rather static, but still important, like lookup tables . . .

[Updated on: Wed, 06 April 2022 15:52]

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