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RE: Truncate/load within transaction

From: Alex Hillman <alex_hillman_at_physia.com>
Date: Fri, 26 May 2000 20:35:08 -0400
Message-Id: <10509.106951@fatcity.com>


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Truncate is a DDL statement - it means implicit commit - end of the transaction

Alex Hillman

-----Original Message-----
From: Rick Osterberg [mailto:osterber_at_FAS.HARVARD.EDU] Sent: Friday, May 26, 2000 1:57 PM
To: Multiple recipients of list ORACLE-L Subject: Truncate/load within transaction

Question on feasability here. I've got a number of tables of moderate size (on the order of hundreds of thousands of rows) which we periodically
(mostly daily) pull in from an external data source, via SQL*Loader.
Question is - is it possible to provide transparancy of that data load, such that the truncate and table load happen within one transaction? I'd like to set things up such that others looking at this table see old data, and then see new data as soon as the load finishes. Right now, with a standard load, they see old data, then an empty table, then a growing table, and then a full table.

Thoughts? Many thanks in advance.

-Rick

+--------------------------------------------------------------------------+
|                 Rick Osterberg   osterber_at_fas.harvard.edu                |
|         Database Applications Specialist     FAS Computer Services       |
+--------------------------------------------------------------------------+


-- 
Author: Rick Osterberg
  INET: osterber_at_fas.harvard.edu

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(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing). ------_=_NextPart_001_01BFC773.690BD730 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; = charset=3Diso-8859-1"> <META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version = 5.5.2448.0"> <TITLE>RE: Truncate/load within transaction</TITLE> </HEAD> <BODY> <P><FONT SIZE=3D2>Truncate is a DDL statement - it means implicit = commit - end of the transaction</FONT> </P> <P><FONT SIZE=3D2>Alex Hillman</FONT> </P> <P><FONT SIZE=3D2>-----Original Message-----</FONT> <BR><FONT SIZE=3D2>From: Rick Osterberg [<A = HREF=3D"mailto:osterber_at_FAS.HARVARD.EDU">mailto:osterber_at_FAS.HARVARD.EDU= </A>]</FONT> <BR><FONT SIZE=3D2>Sent: Friday, May 26, 2000 1:57 PM</FONT> <BR><FONT SIZE=3D2>To: Multiple recipients of list ORACLE-L</FONT> <BR><FONT SIZE=3D2>Subject: Truncate/load within transaction</FONT> </P> <BR> <P><FONT SIZE=3D2>Question on feasability here.&nbsp; I've got a number = of tables of moderate</FONT> <BR><FONT SIZE=3D2>size (on the order of hundreds of thousands of rows) = which we periodically</FONT> <BR><FONT SIZE=3D2>(mostly daily) pull in from an external data source, = via SQL*Loader.&nbsp; </FONT> <BR><FONT SIZE=3D2>Question is - is it possible to provide transparancy = of that data load,</FONT> <BR><FONT SIZE=3D2>such that the truncate and table load happen within = one transaction?&nbsp; I'd</FONT> <BR><FONT SIZE=3D2>like to set things up such that others looking at = this table see old data,</FONT> <BR><FONT SIZE=3D2>and then see new data as soon as the load = finishes.&nbsp; Right now, with a</FONT> <BR><FONT SIZE=3D2>standard load, they see old data, then an empty = table, then a growing</FONT> <BR><FONT SIZE=3D2>table, and then a full table.</FONT> </P> <P><FONT SIZE=3D2>Thoughts?&nbsp; Many thanks in advance.</FONT> </P> <P><FONT SIZE=3D2>-Rick</FONT> </P> <P><FONT = SIZE=3D2>+--------------------------------------------------------------= ------------+</FONT> <BR><FONT = SIZE=3D2>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n= bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Rick Osterberg&nbsp;&nbsp; = osterber_at_fas.harvard.edu&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |</FONT> <BR><FONT SIZE=3D2>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = Database Applications Specialist&nbsp;&nbsp;&nbsp;&nbsp; FAS Computer = Services&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |</FONT> <BR><FONT = SIZE=3D2>+--------------------------------------------------------------= ------------+</FONT> </P> <BR> <P><FONT SIZE=3D2>-- </FONT> <BR><FONT SIZE=3D2>Author: Rick Osterberg</FONT> <BR><FONT SIZE=3D2>&nbsp; INET: osterber_at_fas.harvard.edu</FONT> </P> <P><FONT SIZE=3D2>Fat City Network Services&nbsp;&nbsp;&nbsp; -- (858) = 538-5051&nbsp; FAX: (858) 538-5051</FONT> <BR><FONT SIZE=3D2>San Diego, = California&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- Public Internet = access / Mailing Lists</FONT> <BR><FONT = SIZE=3D2>---------------------------------------------------------------= -----</FONT> <BR><FONT SIZE=3D2>To REMOVE yourself from this mailing list, send an = E-Mail message</FONT> <BR><FONT SIZE=3D2>to: ListGuru_at_fatcity.com (note EXACT spelling of = 'ListGuru') and in</FONT> <BR><FONT SIZE=3D2>the message BODY, include a line containing: UNSUB = ORACLE-L</FONT> <BR><FONT SIZE=3D2>(or the name of mailing list you want to be removed = from).&nbsp; You may</FONT> <BR><FONT SIZE=3D2>also send the HELP command for other information =
Received on Fri May 26 2000 - 19:35:08 CDT

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