External function and performance
From: Krzysztof Ku¶nierz <kkrzysiek_at_supra.com.pl>
Date: Sat, 23 Mar 2002 23:23:12 +0000
Message-ID: <a7iv8s$j1t$2_at_news.tpi.pl>
[Quoted] I have Oracle 9.0.1 working on RedHat Linux 7.2. I have noticed that the following statement:
Date: Sat, 23 Mar 2002 23:23:12 +0000
Message-ID: <a7iv8s$j1t$2_at_news.tpi.pl>
[Quoted] I have Oracle 9.0.1 working on RedHat Linux 7.2. I have noticed that the following statement:
SELECT external_function(column) FROM table
is 10 times slower than:
SELECT column FROM table
where:
- external_function is empty C function (it only returns its parameter)
- shared library containig function on the same machine; communication via IPC
Thanks in advance.
External function and performance
Received on Sun Mar 24 2002 - 00:23:12 CET