Oracle-L: Re: UTL_RAW and slowness

From: Arup Nanda <orarup_at_hotmail.com>
Date: Sun, 26 Oct 2003 10:09:25 -0800
Message-ID: <F001.005D46FB.20031026100925@fatcity.com>

Another thing you can try is using PL/SQL native compilation. It's certainly faster in CPU intensive operations and encryption is a great candidate for it.

Arup Nanda

Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Sunday, October 26, 2003 12:29 PM

> Profiling is on the cards for Monday .... if I don't flush, sometimes the
Cisco router doesn't send the information quickly enough. For a ticker tape that is running at 1220 bauds, if characters do not come at set intervals, it appears as if there has been a "network hiccup" ... and we like to avoid that.
>
> BTW do you think Java would be a good idea? I am no good at java stored
procs, but will try to hack it next week. This seems to be an better alternative than going for external procs (and then security gets involved due to concerns).
>
> BTW in line with US Congress resolution I had initially set the connection
be flushed every 1.6K characters <G>, but soon realized that it was ummm ... inefficient for our needs. Oh Well ...
>
> But thanks for pointing out the Java stored proc idea, I'll definitely
try it out.
> Raj
>
> -----Original Message-----
> Sent: Saturday, October 25, 2003 10:39 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Raj,
>
> When I was writing the PL/SQL implementation of Blowfish, I also wrote a
> version as a Java Stored Procedure so I could compare the performance of
> the two implementations. For CPU intensive work (like encryption), the
> Java Stored Procedure performed orders of magnitude better than the PL/SQL
> version. I was using 8.1.7 at the time.
>
> I am wondering why you need to flush the TCP connection after 128 bytes?
>
> Have you profiled your code using DBMS_PROFILER to see where the time it
> being spent?
>
> Cheers,
> Craig.
>
>
>
>

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-- 
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-- 
Author: Arup Nanda
  INET: orarup_at_hotmail.com

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Received on Sun Oct 26 2003 - 12:09:25 CST