Re: select via dblink does not use index

Solved.

It was a hash join with the smaller table first but it pulled the whole 1M records for this.

There was a: where local_table.branch = 1 in the query. I changed it into: where remote_table.branch = 1 (there is an index on remote_table.branch) and it came down to 2 seconds.

Thanks all.

Yechiel Adar
Mehish
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Wednesday, December 03, 2003 9:49 PM

> I did a select like:
>
> select name from local_table , remote_table
> where local_table.account = remote_table.account.
>
> Remote table is a view with dblink.
>
> I select about 100 records out of about 1M records at the remote db.
>
> I found out that oracle does full table scan at the remote site.
>
> I will welcome ideas how to make oracle use the index on the remote side.
>
> Yechiel Adar
> Mehish
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> Author: Yechiel Adar
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Yechiel Adar
  INET: adar76_at_inter.net.il

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