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Home -> Community -> Mailing Lists -> Oracle-L -> Database Views
I would like get your opinion on what would be the best way provide access to data across multiple databases on just on Node (database).
One way that I have tried is create a view on one database that reads tables across remaining four databases using Dblinks. Let us say there is a table called CUSTOMER that resides on five databases, in order to make it easier to generate reports, a combined view can be created with dblinks on these tables using UNION ALL on one database.
Only concern I have is that when using Dblinks, Oracle might copy the entire remote table to the local database and then retrieve the data based on where clause. This might be a significant performance issue especially if the tables are very BIG.
If there are better ways to accomplish this or any ideas on this one will be greatly appreciated.
Thank you,
Srini
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INET: SRAJENDRAN_at_nlfs.com
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