Hello Srini We had a case like this where one of the tables was in a database that reside in a remote site. Our solution was to create a table that combine employees tables from 2 site into one TABLE in the local site.
This way the select and join is done ONCE at night. Yechiel Adar, Mehish Computer Services [EMAIL PROTECTED] > -----Original Message----- > From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]] > Sent: Wed, January 16, 2002 10:05 PM > To: Multiple recipients of list ORACLE-L > Subject: 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 > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > This e-mail was scanned by the eSafe Mail Gateway > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-8?Q?=E0=E3=F8_=E9=E7=E9=E0=EC?= INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
