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linked tables

This is a discussion on linked tables within the Oracle Miscellaneous forums, part of the Oracle Database category; --> Hi, Is there a way of linking in a table into a DB when the table resides in another ...


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  #1 (permalink)  
Old 05-16-2008, 02:40 PM
Sashi
 
Posts: n/a
Default linked tables

Hi,
Is there a way of linking in a table into a DB when the table resides
in another DB across a network?

For example, I have a DB, say myDB.
I'd like to be able to import data from a table in another DB, say
notMyDB.
These two DB's are hosted on different servers.
I see that the table is HUGE and importing the entire data into myDB
wastes a lot of space.

Is it possible for me to create a 'soft link (in unix terms)' to the
target table?
I'm using Oracle 9.2

Thanks,
Sashi
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  #2 (permalink)  
Old 05-16-2008, 02:40 PM
Terry Dykstra
 
Posts: n/a
Default Re: linked tables

"Sashi" <smalladi@gmail.com> wrote in message
news:c6616b46-8efa-491d-8333-d22cd540b0ec@w7g2000hsa.googlegroups.com...
> Hi,
> Is there a way of linking in a table into a DB when the table resides
> in another DB across a network?
>
> For example, I have a DB, say myDB.
> I'd like to be able to import data from a table in another DB, say
> notMyDB.
> These two DB's are hosted on different servers.
> I see that the table is HUGE and importing the entire data into myDB
> wastes a lot of space.
>
> Is it possible for me to create a 'soft link (in unix terms)' to the
> target table?
> I'm using Oracle 9.2
>
> Thanks,
> Sashi


Lookup CREATE DATABASE LINK command.

--
Terry Dykstra


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  #3 (permalink)  
Old 05-18-2008, 11:02 PM
Mark D Powell
 
Posts: n/a
Default Re: linked tables

On May 13, 5:39*pm, "Terry Dykstra" <tddyks...@forestoil.ca> wrote:
> "Sashi" <small...@gmail.com> wrote in message
>
> news:c6616b46-8efa-491d-8333-d22cd540b0ec@w7g2000hsa.googlegroups.com...
>
>
> > Hi,
> > Is there a way of linking in a table into a DB when the table resides
> > in another DB across a network?

>
> > For example, I have a DB, say myDB.
> > I'd like to be able to import data from a table in another DB, say
> > notMyDB.
> > These two DB's are hosted on different servers.
> > I see that the table is HUGE and importing the entire data into myDB
> > wastes a lot of space.

>
> > Is it possible for me to create a 'soft link (in unix terms)' to the
> > target table?
> > I'm using Oracle 9.2

>
> > Thanks,
> > Sashi

>
> Lookup CREATE DATABASE LINK command.
>
> --
> Terry Dykstra- Hide quoted text -
>
> - Show quoted text -


You can find information on creating and using database links in
distributed queries and on designing and using distribued queries in
the DBA Administration Guide.

Other features that still carry the data duplication overhead but may
be more effective from a query performance appoach in some cases are
Replication and Materialized Views. But with Replication at least you
can get Oracle to perform the second database load from the first
rather than have to run two load jobs of the same data.

Terry's suggestion of distributed SQL is how I would start.

HTH -- Mark D Powell --


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