RE: Re: Can Bind variables be an issue with respect to network transfer?
Date: Wed, 14 Oct 2020 14:04:29 +0000
Message-ID: <34136_1602684287_5F87057F_34136_11025_1_11cf6aaebbdb461a855f66c9f1ad4577_at_vontobel.com>
“An IN list is limited to 1,000”
Unless it’s a multi-value IN list, which is limited to 1e5 elements.
Best regards,
Nenad
From: oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> On Behalf Of Jonathan Lewis
Sent: Mittwoch, 14. Oktober 2020 16:00
Lothar,
Comparing the ela for the "PGA allocate memory" with the matching "tim=" I think what you're seeing is the time it takes Oracle to build an array and copy data from the SQL*Net packet to the array. Obviously some of the difference is about the time to write to the trace file, even so there's a lot of other CPU to account for.and it's happening between the memory allocations. I doubt if "traffic" (i.e. movement across the network) is relevant - the ns calls are probably a layer above that moving the data between the sql*net layer and the session layer.
I am curious about the internal_function() and 4,700 variables. An IN list is limited to 1,000 and I wouldn't have expected an OR of IN lists to turn into a single internal_function(), Perhaps there's something about data types and character set conversion (or some other conversion) that's adding to the CPU time.
Regards
<html xmlns="http://www.w3.org/1999/xhtml">
To: Oracle L <oracle-l_at_freelists.org>
Subject: Re: Re: Can Bind variables be an issue with respect to network transfer?
Jonathan Lewis
Please consider the environment before printing this e-mail.
Bitte denken Sie an die Umwelt, bevor Sie dieses E-Mail drucken.
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css">p { font-family: Arial;font-size:9pt }</style>
</head>
<body>
<p>
<br>Important Notice</br>
<br />
This message is intended only for the individual named. It may contain confidential or privileged information. If you are not the named addressee you should in particular not disseminate, distribute, modify or copy this e-mail. Please notify the sender immediately by e-mail, if you have received this message by mistake and delete it from your system.<br />
Without prejudice to any contractual agreements between you and us which shall prevail in any case, we take it as your authorization to correspond with you by e-mail if you send us messages by e-mail. However, we reserve the right not to execute orders and instructions transmitted by e-mail at any time and without further explanation.<br />
E-mail transmission may not be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete. Also processing of incoming e-mails cannot be guaranteed. All liability of Vontobel Holding Ltd. and any of its affiliates (hereinafter collectively referred to as "Vontobel Group") for any damages resulting from e-mail use is excluded. You are advised that urgent and time sensitive messages should not be sent by e-mail and if verification is required please request a printed version.</br>
Please note that all e-mail communications to and from the Vontobel Group are subject to electronic storage and review by Vontobel Group. Unless stated to the contrary and without prejudice to any contractual agreements between you and Vontobel Group which shall prevail in any case, e-mail-communication is for informational purposes only and is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction.<br />
The legal basis for the processing of your personal data is the legitimate interest to develop a commercial relationship with you, as well as your consent to forward you commercial communications. You can exercise, at any time and under the terms established under current regulation, your rights. If you prefer not to receive any further communications, please contact your client relationship manager if you are a client of Vontobel Group or notify the sender.
Please note for an exact reference to the affected group entity the corporate e-mail signature.
For further information about data privacy at Vontobel Group please consult <a href="https://www.vontobel.com">www.vontobel.com</a>.<br />
</p>
</body>
</html>
--
http://www.freelists.org/webpage/oracle-l
Received on Wed Oct 14 2020 - 16:04:29 CEST