<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div>Since we use Slony (2.0.3) here for some things, and also run Greenplum, I asked one of our DBAs about this. Here is his reply:</div><div><br></div><div><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: rgb(31, 73, 125); ">Greenplum will not work with Slony since Greenplum's trigger has a major limitation. <o:p></o:p></span></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: rgb(31, 73, 125); "><o:p> </o:p></span></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: rgb(31, 73, 125); ">The Greenplum trigger function doesn't allow any SQL execution or modification of the database. So Slony will not work since it relies on triggers to replicate.<o:p></o:p></span></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-bottom: 0.0001pt; margin-left: 0in; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: rgb(31, 73, 125); "><br>See Sing</span></p></div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">From: </span> "Little, Douglas" <<a href="mailto:DOUGLAS.LITTLE@orbitz.com">DOUGLAS.LITTLE@orbitz.com</a>><br><span style="font-weight:bold">Date: </span> Mon, 9 May 2011 12:35:11 -0700<br><span style="font-weight:bold">To: </span> "<a href="mailto:slony1-general@lists.slony.info">slony1-general@lists.slony.info</a>" <<a href="mailto:slony1-general@lists.slony.info">slony1-general@lists.slony.info</a>><br><span style="font-weight:bold">Subject: </span> [Slony1-general] Slony use cases<br></div><div><br></div><div xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:d="DAV:" xmlns:repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="2050" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--><div lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal">Hi,<o:p></o:p></p><p class="MsoNormal">We use greenplum (based on PG 8.2.13) for our data warehouse. We’re on a 10node system, with 1 master that coordinates the work. We use before row triggers a lot to implement at rest encryption.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">We’re bringing up an additional system an need a mechanism for keeping the two clusters in sync. <o:p></o:p></p><p class="MsoNormal">We have a large installation (14000 tables, 14TB). It’s mostly batch updated, with most tables only getting <100k inserts/updates per day. Our biggest table might do 5m rows/day. <o:p></o:p></p><p class="MsoNormal">We have about 1500 core tables that we’d want to replicate. <o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Could people comment on if this would be an appropriate use case for slony?<o:p></o:p></p><p class="MsoNormal">Thanks<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal"><b><span style="font-size: 10pt; font-family: Arial, sans-serif; ">Doug Little<o:p></o:p></span></b></p><p class="MsoNormal"><b><span style="font-size:12.0pt"><o:p> </o:p></span></b></p><p class="MsoNormal"><span style="font-size: 10pt; font-family: Arial, sans-serif; ">Sr. Data Warehouse Architect | Business Intelligence Architecture | Orbitz Worldwide <o:p></o:p></span></p><p class="MsoNormal"><span style="font-size: 10pt; font-family: Arial, sans-serif; ">500 W. Madison, Suite 1000 Chicago IL 60661| Office 312.260.2588 | Fax 312.894.5164 | Cell 847-997-5741</span><span style="font-size: 12pt; font-family: 'Times New Roman', serif; "><o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><a href="mailto:Douglas.Little@orbitz.com" title="mailto:dlittle@orbitz.com"><b><span style="color:blue">Douglas.Little@orbitz.com</span></b></a></span><b><u><span style="font-size: 13.5pt; color: blue; font-family: 'Times New Roman', serif; "><o:p></o:p></span></u></b></p><p class="MsoNormal"> <img border="0" width="83" height="61" id="Picture_x0020_1" src="cid:image001.jpg@01CC0E56.4D172300" alt="cid:image001.jpg@01CABEC8.D4980670"> <a href="http://www.orbitz.com/" title="http://www.orbitz.com/"><span style="font-size: 8pt; color: blue; font-family: Arial, sans-serif; ">orbitz.com</span></a> <span style="color:blue">|</span> <a href="http://www.ebookers.com/" title="http://www.ebookers.com/"><span style="font-size: 8pt; color: blue; font-family: Arial, sans-serif; ">ebookers.com</span></a> <span style="color:blue">|</span> <a href="http://www.hotelclub.com/" title="http://www.hotelclub.com/"><span style="font-size: 8pt; color: blue; font-family: Arial, sans-serif; ">hotelclub.com</span></a> <span style="color:blue">|</span> <a href="http://www.cheaptickets.com/" title="http://www.cheaptickets.com/"><span style="font-size: 8pt; color: blue; font-family: Arial, sans-serif; ">cheaptickets.com</span></a> <span style="color:blue">|</span> <a href="http://www.ratestogo.com/" title="http://www.ratestogo.com/"><span style="font-size: 8pt; color: blue; font-family: Arial, sans-serif; ">ratestogo.com</span></a><span style="color:blue"> |</span> <a href="http://www.asiahotels.com/" title="http://www.asiahotels.com/"><span style="font-size: 8pt; color: blue; font-family: Arial, sans-serif; ">asiahotels.com</span></a><o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p></div></div></div></span></body></html>