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  • Why do HDFS clusters have only a single NameNode?

    - by grautur
    I'm trying to understand better how Hadoop works, and I'm reading The NameNode is a Single Point of Failure for the HDFS Cluster. HDFS is not currently a High Availability system. When the NameNode goes down, the file system goes offline. There is an optional SecondaryNameNode that can be hosted on a separate machine. It only creates checkpoints of the namespace by merging the edits file into the fsimage file and does not provide any real redundancy. Hadoop 0.21+ has a BackupNameNode that is part of a plan to have an HA name service, but it needs active contributions from the people who want it (i.e. you) to make it Highly Available. from http://wiki.apache.org/hadoop/NameNode So why is the NameNode a single point of failure? What is bad or difficult about having a complete duplicate of the NameNode running as well?

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  • ???????!11g R2 RAC ????

    - by M.Morozumi
    ??(2012?4?12?)OPN ?????????(OPN Certified Specialist)??????Oracle Database 11g???????????????? ???:Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator ???:Oracle Real Application Clusters 11g Release 2 and Grid Infrastructure Administration (1Z0-058) ?????????Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator ???????????????????? ?Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator?????????????5? ????Oracle University? Web???????????????????????? ????????????????????! ?????????????????

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  • Can computer clusters be used for general everyday applications?

    - by Matt Pascoe
    Does anyone know how a computer cluster can be used for everyday applications, like for example video games? I would like to build a computer cluster that can run applications over the cluster that were not specifically designed for computer clusters and still see the performance increase. One use would be for video games, but I would also like to utilize the increased computing power for running a large network of virtualized machines.

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  • How do they read clusters/cylinders/sectors from the disk?

    - by claws
    Hello, I needed to recover the partition table I deleted accidentally. I used an application named TestDisk. Its simply mind blowing. I reads each cylinder from the disk. I've seen similar such applications which work with MBR & partitioning. I'm curious. How do they read clusters/cylinders/sectors from the disk? Is it again OS dependent? If so whats the way to for Linux & for windows?

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  • ORACLE MASTER Expert ??????!11g R2 RAC ????????

    - by M.Morozumi
    Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator ??????????(2012/4/12~) -------------------------------------------------------------------- 2012?4?12???OPN ?????????(OPN Certified Specialist)??????Oracle Database 11g???????????? ?????????Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator ???????????????????? ?Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator?????????????5? ????Oracle University? Web???????????????????????? -------------------------------------------------------------------- ???????????! Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator ????????????????????! ?????????????????

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  • What is the optimum way to select the most dissimilar individuals from a population?

    - by Aaron D
    I have tried to use k-means clustering to select the most diverse markers in my population, for example, if we want to select 100 lines I cluster the whole population to 100 clusters then select the closest marker to the centroid from each cluster. The problem with my solution is it takes too much time (probably my function needs optimization), especially when the number of markers exceeds 100000. So, I will appreciate it so much if anyone can show me a new way to select markers that maximize diversity in my population and/or help me optimize my function to make it work faster. Thank you # example: library(BLR) data(wheat) dim(X) mdf<-mostdiff(t(X), 100,1,nstart=1000) Here is the mostdiff function that i used: mostdiff <- function(markers, nClust, nMrkPerClust, nstart=1000) { transposedMarkers <- as.array(markers) mrkClust <- kmeans(transposedMarkers, nClust, nstart=nstart) save(mrkClust, file="markerCluster.Rdata") # within clusters, pick the markers that are closest to the cluster centroid # turn the vector of which markers belong to which clusters into a list nClust long # each element of the list is a vector of the markers in that cluster clustersToList <- function(nClust, clusters) { vecOfCluster <- function(whichClust, clusters) { return(which(whichClust == clusters)) } return(apply(as.array(1:nClust), 1, vecOfCluster, clusters)) } pickCloseToCenter <- function(vecOfCluster, whichClust, transposedMarkers, centers, pickHowMany) { clustSize <- length(vecOfCluster) # if there are fewer than three markers, the center is equally distant from all so don't bother if (clustSize < 3) return(vecOfCluster[1:min(pickHowMany, clustSize)]) # figure out the distance (squared) between each marker in the cluster and the cluster center distToCenter <- function(marker, center){ diff <- center - marker return(sum(diff*diff)) } dists <- apply(transposedMarkers[vecOfCluster,], 1, distToCenter, center=centers[whichClust,]) return(vecOfCluster[order(dists)[1:min(pickHowMany, clustSize)]]) } }

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  • How to I change the text location on my google map for map clusters in Fluster2?

    - by user347480
    Hi, I'm using google maps to create a bunch of POI on a map. I'm using the Fluster2 library to cluster the POI together when there are too many in a certain location. This all works fine and I'm very happy but I would like to move where the fluster2 text is written so it matches my custom icon. ie: it has a marker with 5 written over it so that you know there are 5 poi under that cluster. Does anyone know how to change this or set the text to a specific location? Thanks The Net Duck

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  • Is there a way in Windows 7 to disable "journaling"?

    - by Psycogeek
    C:\$extend\$Usn.Jrnl:$J:$data Here is a picture finally. The large strip in the center of the top band is the largest chunk, in the other, grey areas are the various clusters with it. On the right, the big long grey line is $logfile (not paging), and it is 63&nbsb;MB. Paging, 500&nbsb;MB is the dark cyan chunk, next to the yellow MFTres in the inner rings.. The disk was defragged so they could be seen easier. Not all clusters of this type of file are tagged, but the idea is there. The disk is 4k clusters, now about 12 GB size. Each cute little block in the picture is .81 MB and represents 207 clusters. The dkGreen section, is mostly the whole Winsxs pile, also interesting when they keep telling us it doesn't take much disk space. Wikipedia suggests that in previous NT systems "USN journaling" would be turned on when enabled (assumes it could also be turned off?). What aspects, services, or program is working on putting that stuff all over the disk which is known by $jrnl$ type clusters, even if it is not actual USN journaling? Is it possible in a Windows 7 system to completly disable the journaling, and what would be the ramifications of that? On a Windows XP NTFS system, I do not recall seeing the quantity of disk clusters used with these $jrnl$ names, so I do not recall this being necessary in this quantity for an NTFS file system itself? I understand that it would not be there, if it did not have a useful function :-) Information about how wonderful is fine, if that information will help track down what parts of the system create and use it. Change Journals states: Change journals are also needed to recover file system indexing Hmm, that might explain some of them, or why it was left on the disk. A crash while background indexing?

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  • AngularJS databinding

    - by user3652865
    How can I add multiple values to one object in an Array. I am having Environment and Cluster, I am able to assign multiple clusters to one environment. Now I want to add application name to this environment and cluster pair. I am having page called "Add Application". Here I am using select menu to for environment and Cluster. My first question is, when I select environment then want to show only those clusters which are assigned to that environment name. And assign application name to that pair. Also should be able to edit the Application field. I am using environmentServices and clusterServices to store updated data. link of JSFiddle: http://jsfiddle.net/avinashMaddy/J2KLK/5/ Please if someone can help me in this. Below is my code: <div class="maincontent" ng-controller="manageApplicationController"> <div class="article"> <form> <section> <!-- Environment --> <div class="col-md-4"> <label>Environment:</label> <select ng-model="newApp.selectedEnvironment" class="form-control" ng-options="environment.name for environment in environments"> <option value='' disabled style='display:none;'> Select Environment </option> </select> <span> <select ng-switch-when="true" disabled ng-model="newApp.selectedEnvironment" class="form-control" ng-options="environment.name for environment in environments"> <option value='' disabled style='display:none;'> Select Environment </option> </select> </span> </div> <!-- Cluster --> <div class="col-md-4"> <label>Cluster:</label> <span ng-switch on="newApp.showCancel"> <select ng-switch-default ng-model="newApp.selectedCluster" class="form-control" ng-options="cluster for cluster in clusters"> <option value='' disabled style='display:none;'> Select Environment </option> </select> <select ng-switch-when="true" disabled ng-model="newApp.selectedCluster" class="form-control" ng-options="cluster for cluster in clusters"> <option value='' disabled style='display:none;'> Select Environment </option> </select> </span> </div> <!-- Application Name --> <div class="col-md-4"> <label>Application Name:</label> <input type="text" class="form-control" name="applicationName" placeholder="Application" ng-model="app.name" required> <br/> <input type="hidden" ng-model="app.id" /> </div> </section> <!-- submit button --> <section class="col-md-12"> <button type="button" class="btn btn-default pull-right" ng-click="saveNewApplicatons()">Save</button> </section> </form> </div> <!-- table --> <div class="article"> <table class="table table-bordered table-striped"> <tr> <th colspan="6"> <div class="pull-left">Cluster Info</div> </th> </tr> <tr> <th>Environment</th> <th>Cluster</th> <th>Application</th> <th>Edit</th> <th>Header Ifo</th> </tr> <tr ng-repeat="app in applications"> <td>{{app.environment}}</td> <td>{{app.cluster}}</td> <td>{{app.name}}</td> <td> <a href="" ng-click="edit(app.id)" title="Edit">edit</span></a> | <a href="" ng-click="remove(app.id)" title="Delete">delete</a> </td> <td> <!-- Add template --> <script type="text/ng-template" id="addHederInfo.html"> <div class="modal-header"> <h3>Add Header Info</h3> </div> <div class="modal-body"> <input type="text" class="form-control" name="eName" placeholder="Header Key" ng-model="$parent.header.key"> <br/> <input type="text" class="form-control" name="eName" placeholder="Header Value" ng-model="$parent.header.value"> <br /> <input type="hidden" ng-model="header.id" /> <section> <div class="pull-right"> <button class="btn btn-primary" ng-click="saveHeader()">Add</button> <button class="btn btn-warning" ng-click="cancel()">Close</button> </div> </section> </div> <div class="modal-footer"> <h3>Existing Header Info for </h3> <table class="table table-bordered table-striped"> <tr> <th>Header Key</th> <th>Header Vlaue</th> </tr> <tr ng-repeat="header in headers"> <td>{{header.key}}</td> <td>{{header.value}}</td> </tr> </table> </div> </script> <!-- /Add template --> <script type="text/ng-template" id="editHederInfo.html"> <div class="modal-header"> <h3>Edit Header Info</h3> </div> <div class="modal-body"> <input type="text" class="form-control" name="eName" placeholder="Header Key" ng-model="$parent.header.key"> <br/> <input type="text" class="form-control" name="eName" placeholder="Header Value" ng-model="$parent.header.value"> <br /> <input type="hidden" ng-model="header.id" /> <section> <div class="pull-right"> <button class="btn btn-primary" ng-click="saveHeader()">Update</button> <button class="btn btn-warning" ng-click="cancel()">Close</button> </div> </section> </div> <div class="modal-footer"> <h3>Existing Header Info for</h3> <table class="table table-bordered table-striped"> <tr> <th>Header Key</th> <th>Header Vlaue</th> <th>Edit</th> </tr> <tr ng-repeat="header in headers"> <td>{{header.key}}</td> <td>{{header.value}}</td> <td> <a href="" ng-click="editHeader(header.id)" title="Edit"><span class="glyphicon glyphicon-edit" ></span></a> | <a href="" ng-click="removeHeader(header.id)" title="Edit"><span class="glyphicon glyphicon-trash"></span></a> </td> </tr> </table> </div> </script> <!-- Add template --> <!-- /Add template --> <a href="" ng-click="addInfo()">Add</a> | <a href="" ng-click="editInfo()">Edit</a> </td> </tr> </table> </div> </div> Controller.js: var apsApp = angular.module('apsApp', []); apsApp.service('clusterService', function(){ var clusters=[]; //simply returns the environment list this.list = function () { return clusters; }; }); apsApp.service('environmentService', function(){ var environments=[ {name :'DEV',}, {name:'PROD',}, {name:'QA',}, {name:'Linux_Dev',} ]; //simply returns the environment list this.list = function () { return environments; }; apsApp.controller('manageApplicationController', function ($scope, environmentService, clusterService) { var uid = 0; $scope.environments= environmentService.list(); $scope.clusters= clusterService.list(); $scope.newApp = {}; $scope.newApp.selectedEnvironment = $scope.environments[0]; $scope.newApp.selectedCluster = $scope.clusters[0]; $scope.newApp.buttonLabel = 'Save'; $scope.newApp.showCancel = false; /*$scope.applications=[ {'name': 'Enterprice App Store' }, {'name': 'UsageGateway'}, {'name': 'Click 2 Fill'}, {'name': 'ATT SmartWiFi'} ];*/ //add new application $scope.saveNewApplicatons = function() { if ($scope.select.id == undefined) { //if this is new application, add it in applications array $scope.clusters.push({ id: uid++, cluster: $scope.newApp.cluster, environment: $scope.newApp.selectedEnvironment }); } else { $scope.clusters[$scope.select.id].cluster = $scope.select.cluster; $scope.newApp.id = undefined; $scope.newApp.buttonLabel = 'Save Cluster'; $scope.newApp.showCancel = false; }; //clear the add appplicaitons form $scope.newApp.selectedEnvironment = $scope.environments[0]; }; //delete application $scope.remove = function (id) { //search app with given id and delete it for (i in $scope.clusters) { if ($scope.clusters[i].id == id) { confirm("This Cluster will get deleted permanently"); $scope.clusters.splice(i, 1); $scope.clust = {}; } } }; $scope.cancelUpdate = function () { $scope.newApp.buttonLabel = 'Save Cluster'; $scope.newApp.showCancel = false; $scope.newApp.id = undefined; $scope.newApp.cluster = ""; $scope.newApp.selectedEnvironment = $scope.environments[0]; }; });

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  • How do I print out objects in an array in python?

    - by Jonathan
    I'm writing a code which performs a k-means clustering on a set of data. I'm actually using the code from a book called collective intelligence by O'Reilly. Everything works, but in his code he uses the command line and i want to write everything in notepad++. As a reference his line is >>>kclust=clusters.kcluster(data,k=10) >>>[rownames[r] for r in k[0]] Here is my code: from PIL import Image,ImageDraw def readfile(filename): lines=[line for line in file(filename)] # First line is the column titles colnames=lines[0].strip( ).split('\t')[1:] rownames=[] data=[] for line in lines[1:]: p=line.strip( ).split('\t') # First column in each row is the rowname rownames.append(p[0]) # The data for this row is the remainder of the row data.append([float(x) for x in p[1:]]) return rownames,colnames,data from math import sqrt def pearson(v1,v2): # Simple sums sum1=sum(v1) sum2=sum(v2) # Sums of the squares sum1Sq=sum([pow(v,2) for v in v1]) sum2Sq=sum([pow(v,2) for v in v2]) # Sum of the products pSum=sum([v1[i]*v2[i] for i in range(len(v1))]) # Calculate r (Pearson score) num=pSum-(sum1*sum2/len(v1)) den=sqrt((sum1Sq-pow(sum1,2)/len(v1))*(sum2Sq-pow(sum2,2)/len(v1))) if den==0: return 0 return 1.0-num/den class bicluster: def __init__(self,vec,left=None,right=None,distance=0.0,id=None): self.left=left self.right=right self.vec=vec self.id=id self.distance=distance def hcluster(rows,distance=pearson): distances={} currentclustid=-1 # Clusters are initially just the rows clust=[bicluster(rows[i],id=i) for i in range(len(rows))] while len(clust)>1: lowestpair=(0,1) closest=distance(clust[0].vec,clust[1].vec) # loop through every pair looking for the smallest distance for i in range(len(clust)): for j in range(i+1,len(clust)): # distances is the cache of distance calculations if (clust[i].id,clust[j].id) not in distances: distances[(clust[i].id,clust[j].id)]=distance(clust[i].vec,clust[j].vec) #print 'i' #print i #print #print 'j' #print j #print d=distances[(clust[i].id,clust[j].id)] if d<closest: closest=d lowestpair=(i,j) # calculate the average of the two clusters mergevec=[ (clust[lowestpair[0]].vec[i]+clust[lowestpair[1]].vec[i])/2.0 for i in range(len(clust[0].vec))] # create the new cluster newcluster=bicluster(mergevec,left=clust[lowestpair[0]], right=clust[lowestpair[1]], distance=closest,id=currentclustid) # cluster ids that weren't in the original set are negative currentclustid-=1 del clust[lowestpair[1]] del clust[lowestpair[0]] clust.append(newcluster) return clust[0] def kcluster(rows,distance=pearson,k=4): # Determine the minimum and maximum values for each point ranges=[(min([row[i] for row in rows]),max([row[i] for row in rows])) for i in range(len(rows[0]))] # Create k randomly placed centroids clusters=[[random.random( )*(ranges[i][1]-ranges[i][0])+ranges[i][0] for i in range(len(rows[0]))] for j in range(k)] lastmatches=None for t in range(100): print 'Iteration %d' % t bestmatches=[[] for i in range(k)] # Find which centroid is the closest for each row for j in range(len(rows)): row=rows[j] bestmatch=0 for i in range(k): d=distance(clusters[i],row) if d<distance(clusters[bestmatch],row): bestmatch=i bestmatches[bestmatch].append(j) # If the results are the same as last time, this is complete if bestmatches==lastmatches: break lastmatches=bestmatches # Move the centroids to the average of their members for i in range(k): avgs=[0.0]*len(rows[0]) if len(bestmatches[i])>0: for rowid in bestmatches[i]: for m in range(len(rows[rowid])): avgs[m]+=rows[rowid][m] for j in range(len(avgs)): avgs[j]/=len(bestmatches[i]) clusters[i]=avgs return bestmatches

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  • Router recommendation to virtualize 800 IPs

    - by delerious010
    I've recently been looking at getting some new load balancers for our environment as we are expecting to double our client base in the next 12 months. Currently we have 400 public IPS serving 800 clusters ( 2 clusters / IP due to ports ) on Coyote Point Balancers, and distributing connections to 3 web servers serving about 6GBytes outgoing, 2Gbytes in per day. If we double, this would be about 800 IPs, possibly 1600 clusters, and about 6 servers per cluster ( for a total of 9600 so called "real servers" using Barracuda's lingo ). Due to the amount of clusters, most solutions I've looked at ( Coyote, Barracuda, Loadbalancer.org ) seem to be unsure whether they'll be able to handle our planned growth, mostly due to health checks performed on the servers ... which makes total sense when you think of it. So the fine folk at loadbalancer.org recommended that we may be better off offload the 400-800 public IPs, which we require for SSL eCommerce solutions, over to a forward facing router. From that point on, the router could do some mangling to route EXT_IP:443 to INT_IP:INT_PORT which would then allow us to reduce the Load Balancer configuration to 1 or 2 clusters, thus resolving the health check problem. Does this idea make sense to yall ? Or would you have other recommendations to make ? Secondly, what router would you recommend for such an undertaking ? I'd be looking at something that has some form of failover mechanism built in. On a totally unrelated note, I've got to admit that I'm extremely pleased with the responses I got from loadbalancer.org. Their responses to my inquiries were surprisingly helpful ( i.e. I didn't feel as if I was taking to a sales guy trying to push something ). ( No I don't work for them, and sadly nor are they sending me free gear ).

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  • I'm thinking n+1 in a hyper-v r2 cluster managed by scvmm is not a great idea anymore

    - by tony roth
    Around here the clusters (not hyper-v clusters) are typically configured as n+1, so they are asking me to create a n+1 hyper-v r2 clusters. These will configured with both csv's and live migration and managed via scvmm r2. My thinking is that its a waste in having a node sitting there idle. In my opinion it would be better to have headroom left over for what would traditionally the +1 server spread amongst the N nodes. Anybody have an opinion on this. thanks

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  • I'm think n+1 in a hyper-v r2 cluster managed by scvmm is not a great idea anymore

    - by tony roth
    Around here the clusters (not hyper-v clusters) are typically configured as n+1, so they are asking me to create a n+1 hyper-v r2 clusters. These will configured with both csv's and live migration and managed via scvmm r2. My thinking is that its a waste in having a node sitting there idle. In my opinion it would be better to have headroom left over for what would traditionally the +1 server spread amongst the N nodes. Anybody have an opinion on this. thanks

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  • ?Oracle DB 11gR2 ??????????????????/????????????????!

    - by Yuichi.Hayashi
    ?????????????????????????????40~60%????????????? ??????????????????????????????????????????????????????????????????????????????????... ????????????????????????????????????????TCO(Total Cost of Ownership)???????????? ??????????????????????????????????????????????????????????????????????????? ???????1?1???????????????????????????????????1??????????????????????????????????????·????????????? ??????????????????·???·????????????????TCO????????????? ????????????????Grid(????)????????????????????????????·???? = Oracle Real Application Clusters(RAC)???????·???? = Oracle Automatic Storage Management(ASM)????????????????????????????????????? Oracle Database???????11g R2?????????????????????????/???????????????????????(????????????????)?????????????????????????????! SCAN Single Client Access Name(SCAN)??Oracle Real Application Clusters(RAC)11g R2??????? SCAN??????????????????????????????????????????????????RAC?????????????????????????·????????????????????SCAN?????????????????????VIP?????????????RAC????????????????????????????????!???????????????? ???????????????????????????????????????SCAN?????????????????????????????TCO?????????????????(????????????)???????????????????????????????!????????????? SCAN?????????????????????? ??????Oracle Database 11gR2 Real Application Clusters(?????????) ??????Oracle Real Application Clusters 11g Release 2 SCAN??? ACFS ASM Cluster File System(ACFS)??Automatic Storage Management(ASM)11g R2??????? ASM??S.A.M.E.(Stripe And Mirror Everything)????????????????????????????????????????????????????????·???????·??????????????????10g????????????????·??????????·???????????????ASM????????????·??????????????????????????????????????????·?????????????????????????????????????????????? 11g R2??????ACFS?????????????????(????????????????????????????????????????????????????????)????ASM???????????????????????????????????????????????????????·??????????????ACFS????! · ??????????????????? · ????????????/???? · ??????????????????????(?????)??? · ????????????? ?2???????????????????????????? · ???????????? ??????????????????????·??????????·?????????????????????!???????????????????????????????????????? ACFS??????????????????? ??????Oracle Database 11gR2 Automatic Storage Management ??????Oracle Database 11g Release 2 Automatic Storage Management???????????????? ??????·????? ??????·???????Oracle Database Resource Manager(????·?????)11g R2??????? ????·????????????·???????????????????????????????Oracle Database???Oracle RAC????????????????????????????????????????????????????????????????????????????????????????????????????1????????????? ????????????·?????????????????????????????????????????????????????????????????? CPU ???????????????????????????????????????????????????·??????????????????????????? 11g R2??????????·???????????????? CPU_COUNT ?????????????? CPU ???????????????????????????·??????? CPU ?????????????????????????????????????????????? ????????·???????????????????????????????????????????Oracle ??????????????????????·??????? CPU ??????????????????????????????·???????????????!???????????????? ??????·???????????????????????? ??????Oracle Database 11gR2 ????????????? ?????????? ? ??????????????????????????????????!? ? ???????????????????????????????????!?

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  • OTN ???? ?????? ???????

    - by Yusuke.Yamamoto
    Database ?? Database ??????? Database ?????????? Java WebLogic Server/????????·???? SOA/BPM/????? ???????/???? ID??/?????? ?????EPM/BI EPM/BI ??????? EPM/BI ???? OS/??? ???? ????? MySQL Database ?? ???? ?? ????????? ??? ?? ORACLE MASTER??Master??ORACLE MASTER Bronze?Bronze DBA11g? ??(WMV)??(MP4)2011/6/22 ORACLE MASTER??Master??ORACLE MASTER Bronze?11g SQL??????(WMV)??(MP4)2011/3/9 ORACLE MASTER??Master??ORACLE MASTER Silver?Silver DBA11g???(WMV)??(MP4)2010/3/2 ORACLE MASTER??Master??ORACLE MASTER Silver?Silver DBA11g?[10g-11g???] ??(WMV)??(MP4)2012/4/23 ORACLE MASTER??Master??ORACLE MASTER Gold DBA11g ??(WMV)??(MP4)2011/2/23 ORACLE MASTER??Master??ORACLE MASTER Gold ?Gold DBA11g ????[??]??(WMV)??(MP4)2012/4/23 ORACLE MASTER??Master??30?????? ORACLE MASTER??????(WMV)??(MP4)2012/9/3 Oracle Database???????????????!Oracle??????????!???(WMV)??(MP4)2010/9/8 Oracle Database???????????????????!? Oracle?? ?????(WMV)??(MP4)2011/4/13 Oracle Database???????????????????!? Oracle?? ??????????(WMV)??(MP4)2011/4/20 Oracle Database???????????????????????????!? ??????????-?????(WMV)??(MP4)2012/2/20 Oracle Database???????????????????????????!? ??????????-?????(WMV)??(MP4)2012/2/20 Oracle Database????????????60???????!?????????????·???????? ??(WMV)??(MP4)2011/5/17 Oracle Database???Step by Step?????!? Oracle Database 11g -?????????-??(WMV)??(MP4)2009/12/17 Oracle Database???Step by Step?????!? OracleDatabase11g -???????????(WMV)??(MP4)2009/12/24 Oracle Database???Step by Step?????!? Oracle Database 11g -?????????(WMV)??(MP4)2009/12/10 Oracle Database DBA?????????????????!???????????(WMV)??(MP4)2010/12/21 Oracle Database DBA?????????????????!????????·??????????(WMV)??(MP4)2010/11/16 Oracle Database DBA?????????????????!???????·????????(WMV)??(MP4)2010/12/15 Oracle Database DBA?????????????????!???????????(WMV)??(MP4)2010/7/21 Oracle Database DBA?????????????????!?Export/Import?????(WMV)??(MP4)2010/9/8 Oracle Database DBA??????????????????!??????????????(WMV)??(MP4)2011/7/20 Oracle Database DBA?????????·????????!!????????!?????????SQL????????(WMV)??(MP4)2010/11/24 Oracle Database DBA?????????·?????????SQL????????????!SQL????????(WMV)??(MP4)2012/1/23 Oracle Database DBA?????????·????????!!???????·??????~DiskI/O?????????~??(WMV)??(MP4)2011/3/9 Oracle Database DBA?????????·????????!!???????·??????~SQL???????~??(WMV)??(MP4)2011/9/20 Oracle Database DBA?????????·????????!???????·??????-Statspack??-??(WMV)??(MP4)2010/7/28 Oracle Database DBA?????????·????????!!???????·??????~??????????~??(WMV)??(MP4)2010/8/4 Oracle Database DBA?????????·????????!!???????·??????-?????????-??(WMV)??(MP4)2010/7/14 Oracle Database DBA?????????·?????? ??!????????????? ??????(WMV)??(MP4)2010/7/7 Oracle Database DBA?????????·????????!????????????? ??????(WMV)??(MP4)2010/7/7 Oracle Database DBA?????????·????????!! ????????DB ??????Tips??(WMV)??(MP4)2010/8/5 Oracle Database DBA??????????!!??????~Oracle Database???~??(WMV)??(MP4)2010/8/31 Oracle Database DBA??????????!!??????~OracleDatabase????~??(WMV)??(MP4)2010/8/24 Oracle Database DBA???????????????????????????????????????(WMV)??(MP4)2010/4/27 Oracle Database DBA????????&?????????????·???? - ?????RMAN??????(WMV)??(MP4)2010/10/13 Oracle Database DBA????????&???????!!??????·????-???????????-??(WMV)??(MP4)2010/9/8 Oracle Database DBA????????&???????!??????·???? ~?????? VS RMAN ?????????~??(WMV)??(MP4)2012/1/23 Oracle Database DBA????????&???????!??????·???? ~????????????~??(WMV)??(MP4)2011/7/27 Oracle Database DBA????????&?????????????????-???????????????????(WMV)??(MP4)2010/10/6 Oracle Database Developer??????????????? Oracle SQL????(WMV)??(MP4)2010/10/20 Oracle Database Developer??????????????? Oracle PL/SQL????(WMV)??(MP4)2012/1/23 Oracle Database Developer????????!!PL/SQL????????(WMV)??(MP4)2011/03 Oracle Database Developer?????????????????????(WMV)??(MP4)2011/5/25 Oracle Database Developer??Java??java???!??(WMV)??(MP4)2009/11/26 Database ??????? ???? ?? ????????? ??? ?? DB???????????????!Oracle Database????????(WMV)??(MP4)2010/5/12 DB???????????????????? Oracle Enterprise Manager??(WMV)??(MP4)2012/1/23 DB??????????!Oracle Enterprise Manager???????????????? ??(WMV)??(MP4)2012/1/23 DB??????????!Oracle Enterprise Manager??????????????·?????? ??(WMV)??(MP4)2012/1/23 DB?????????????(UX)????????????????????(WMV)??(MP4)2011/4/6 DB???????????????????????????????Oracle Enterprise Manager??????!??(WMV)??(MP4)2012/1/23 DB???JP1??????????????????????!JP1???????????(WMV)??(MP4)2011/6/9 DB???JP1JP1???????!DB????????·??????!??(WMV)??(MP4)2011/1/12 DB???SAP"SAP on Oracle Database"???Tips??(WMV)??(MP4)2011/1/12 DB?????????????????! Oracle Database ????????(WMV)??(MP4)2012/1/23 DB?????????Web????????? ~????????~??(WMV)??(MP4)2010/3/10 DB?????????Web??????? ~????????????????????????~??(WMV)??(MP4)2010/2/3 DB??????????Oracle Database Upgrade?????(WMV)??(MP4)2011/9/20 DB??????????Oracle Database Client??????????????(WMV)??(MP4)2011/4/26 DB??????????Oracle Database 11g Release 2????????????????? ??(WMV)??(MP4)2012/1/23 DB?????????????!Oracle???????????????????????????(WMV)??(MP4)2011/1/18 DB???PL/SQLPL/SQL??????? ????(WMV)??(MP4)2012/1/23 DB???PL/SQLPL/SQL??????? ????(WMV)??(MP4)2012/1/23 DB???SQL DeveloperOracle SQL Developer????????????????(WMV)??(MP4)2012/1/23 DB???Jdeveloper??IDE Oracle JDeveloper??????????????????(WMV)??(MP4)2012/1/23 DB???APEX?????????!!APEX??????????????(WMV)??(MP4)2011/4/13 DB???APEX????!60??????Web??????????(WMV)??(MP4)2011/3/3 DB???APEXOracle??????????????! APEX4.0??????(WMV)??(MP4)2011/2/9 DB???APEX?????!????????!Oracle APEX???????????(WMV)??(MP4)2011/6/23 DB???Large Object??·???????DB????? -LOB???????-??(WMV)??(MP4)2010/2/4 DB???XMLOracle Database???????XML???????(WMV)??(MP4)2011/3/16 DB???XML??????XML?? - ?????! XML??? -??(WMV)??(MP4)2010/8/18 DB???XML??????XML?? - Oracle????XML -??(WMV)??(MP4)2010/8/25 DB???????SQL?????!Oracle Database????????Oracle Text???????(WMV)??(MP4) - DB???Oracle Data Guard??!Oracle Data Guard ????????????????????(WMV)??(MP4)2012/1/23 DB???Oracle Real Application Clusters??!?????????? ~RAC???~??(WMV)??(MP4)2012/1/23 DB???Oracle Real Application Clusters??!?????????? ~RAC??? ~??(WMV)??(MP4)2012/1/23 DB???Oracle Real Application Clusters??!Oracle RAC????????????????????????(WMV)??(MP4)2012/1/23 DB???Oracle Real Application Clusters??????!RAC????????????(WMV)??(MP4)2012/1/23 DB???Oracle Real Application Clusters?????????????!!60?????RAC????(WMV)??(MP4)2010/12/8 DB???????????????????????????!!?Oracle Database Firewall? ??(WMV)??(MP4)2012/1/23 DB?????????Oracle Database Firewall??????????? ??(WMV)??(MP4)2012/5/14 DB?????????????????????????????????????????(WMV)??(MP4)2011/5/11 DB??????????????????????????????????????(WMV)??(MP4)2011/4/19 DB????????????????! ???????????????(WMV)??(MP4)2012/1/23 DB?????????????????????????????????(WMV)??(MP4)2010/11/16 DB???????????????????????????????????????????????(WMV)??(MP4)2011/2/9 DB???????????????~???????~??(WMV)??(MP4)2010/12/22 DB???????????????~????/????????~??(WMV)??(MP4)2011/5/24 DB??????Oracle VM 3.0 ???????(WMV)??(MP4)2011/10/3 DB??????????????BCP/BCM???Oracle??????????(WMV)??(MP4)2011/7/13 DB???????????????????????????????????????(WMV)??(MP4)2011/7/12 DB????????DB??????????!??????? Oracle ????????????? ??(WMV)??(MP4)2012/1/23 DB??????????????????!?????????????????(WMV)??(MP4)2011/6/22 DB??????????????????????(WMV)??(MP4)2011/10/17 DB???????????????????????????(WMV)??(MP4)2011/10/17 DB????????????????~?????????????????IT????~??(WMV)??(MP4)2009/12/22 DB??????????!???????? ~????????????????~??(WMV)??(MP4)2011/11/1 DB???????????????????? -???????????(WMV)??(MP4)2011/6/21 DB????????20?????? Oracle GoldenGate??(WMV)??(MP4)2012/4/23 DB????????Oracle GoldenGate?????????????(WMV)??(MP4)2012/5/14 DB???????????????????????????!Oracle GoldenGate??????(WMV)??(MP4)2011/11/1 DB???????????????????!GoldenGate????DB?????????(WMV)??(MP4)2011/8/24 DB????????????????????????? Oracle GoldenGate ????????????! ??(WMV)??(MP4)2012/1/23 DB???????? ??????????????????????????????(WMV)??(MP4)2011/03 DB???????????????!! Oracle Data Integrator??????????(WMV)??(MP4)2009/12/17 DB??????????!??????????????????????(WMV)??(MP4)2011/4/6 DB???????????????????????Oracle Database ????? ????(WMV)??(MP4)2012/1/23 DB???????????????????????Oracle Database ????? ????(WMV)??(MP4)2012/1/23 DB????????????!??????·??????????????????(WMV)??(MP4)2012/1/23 DB???Oracle Partitioning??!????????????????? ????(WMV)??(MP4)2012/1/23 DB???Oracle Partitioning??!????????????????? ????(WMV)??(MP4)2012/1/23 DB?????????????????!SQL?????????? ??(WMV)??(MP4)2010/12/21 DB???Exadata20?????? Oracle Exadata??(WMV)??(MP4)2012/4/23 DB???ExadataOracle Exadata??????????????????(WMV)??(MP4)2012/5/14 DB???Exadata????!Oracle Exadata????? ??(WMV)??(MP4)2011/10/17 DB???ExadataOracle Exadata????????????????????????? ??(WMV)??(MP4)2012/1/23 DB?????????DB?????DB????????????????? -Oracle TimesTen ????-??(WMV)??(MP4)2012/1/23 DB?????????DBWeb????????????!????????????????(WMV)??(MP4)2010/11/4 DB????????DBA?"???????" ????????????????(WMV)??(MP4)2010/8/25 DB?????????????!?Oracle ASM??????????????(WMV)??(MP4)2011/7/8 DB????????Oracle ASM ? Oracle Clusterware ??????????? ??(WMV)??(MP4)2012/1/23 DB????????????????????????????????? - Oracle ASM Cluster File System (ACFS)????! ??(WMV)??(MP4)2012/1/23 DB??????????????????/????·????????Flashback Database with SSD???(WMV)??(MP4)2011/10/17 DB???????????????????DB??????~RAC VM with SSD??(WMV)??(MP4)2011/1/11 DB????????Oracle???????????? SSD?????!??(WMV)??(MP4)2010/8/11 DB??????????????NAS??????!Oracle Database?I/O???????NFS????????????SSD?????????????(WMV)??(MP4)2012/1/23 DB????????????! ???????????? ~????·???????????????~??(WMV)??(MP4)2009/3/25 DB??????????!???????????????????(WMV)??(MP4)2011/3/15 DB???????????????????????!??????·?????????(WMV)??(MP4)2010/6/23 Windows/.Net?????????Oracle on Windows-???? OVM,Hyper-V????(WMV)??(MP4)2011/4/13 Windows/.Net????????Windows Server?Oracle?????!??(WMV)??(MP4)2010/5/19 Windows/.Net????????Oracle on Windows - ??????&???? ?????(WMV)??(MP4)2011/4/20 Windows/.Net??????.Net.NET + Oracle Database ??????????????????????(WMV)??(MP4)2012/1/23 Windows/.Net??????.Net.NET????????Oracle Database ??(WMV)??(MP4)2011/1/20 Windows/.Net??????.NetOracle on Windows-.NET+Oracle ???????(WMV)??(MP4)2011/6/28 Windows/.Net??????.NetVB6????.NET? ~DB????????????~??(WMV)??(MP4)2010/8/4 Windows/.Net??????.Net.NET+Oracle ???????????????????(WMV)??(MP4)2011/10/3 Windows/.Net??????Active Directory30????!Active Directory+Oracle??(WMV)??(MP4)2010/9/8 Windows/.Net??????AccessAccess????WEB?????????????????????????(WMV)??(MP4)2011/7/20 Windows/.Net??????Oracle Real Application ClustersWindows?RAC??!????????????(WMV)??(MP4)2010/9/1 Windows/.Net????????????Oracle on Windows ~???????~ ??(WMV)??(MP4)2011/1/18 Windows/.Net????????????Oracle on Windows ~???????~ ??(WMV)??(MP4)2011/1/20 Windows/.Net???????????MSCS????!?Windows+Oracle????????(WMV)??(MP4)2010/8/4 ???????11gR2???????!Oracle DB 11g???????/??????(WMV)??(MP4)2011/4/14 ???????11gR2???! Oracle Database 11g R2 ?????????(WMV)??(MP4)2010/11/17 ???????11gR2DB??????·??????????11g R2?????(WMV)??(MP4)2010/9/15 ????????????????DWH????????????????·??????????(WMV)??(MP4)2010/11/25 ????????????????DWH????????????????·??????????(WMV)??(MP4)2010/11/25 ????????????????DWH????????????????·??????????(WMV)??(MP4)2010/11/25 Database ?????????? ???? ?? ????????? ??? ?? Oracle Master Platinum??Oracle Real Application Clusters?Platinum???????Platinum???!?????? Oracle RAC ?????????(WMV)??(MP4)2010/1/26 Oracle Master Platinum??????????Platinum??????? Platinum???!???????Oracle??????????????(WMV)??(MP4)2010/4/21 Oracle Master Platinum????????Platinum??:?????????????????????(WMV)??(MP4)2010/5/26 Oracle Master Platinum????????·?????Platinum??????? Platinum???! ????????????·?????????(WMV)??(MP4)2010/3/9 ????????????????????????????!?????????&?????????(WMV)??(MP4)2012/1/23 ????????????????????????????!SQL????????? ??? Part1&2??(WMV)??(MP4)2010/10/12 ????????????????????????????!SQL????????? ??? Part3 ??(WMV)??(MP4)2010/10/19 ????????????????????????????!SQL????????? ??? Part4 ??(WMV)??(MP4)2011/1/27 ????????????????????????????!SQL????????? ??? Part5 ??(WMV)??(MP4)2011/1/27 ????????????????????????????!?????????????????????(WMV)??(MP4)2012/1/23 ????????????????????????????!????????? Part1 ??(WMV)??(MP4) - ????????????????????????????!????????? Part2 ??(WMV)??(MP4)2011/7/26 ????????????????????????????!????????? Part3 ??(WMV)??(MP4)2010/4/28 ????????????????????????????!??????? Part1 ??(WMV)??(MP4)2011/11/1 ????????????????????????????????????????? Part2 ??(WMV)??(MP4)2012/5/28 ????????????????????????????!???????????????????????????? ??(WMV)??(MP4)2012/1/23 ??????????????????????????!??????? Part1 ??(WMV)??(MP4)2011/2/10 ??????????????????????????!??????? Part2 ??(WMV)??(MP4)2011/3/23 ??????????????????????????!??????? Part3 ??(WMV)??(MP4)2011/4/26 ??????????????????????????!??????? Part4 ??(WMV)??(MP4)2011/5/26 ???????????Exadata???????????!Exadata???????????????????Tips??(WMV)??(MP4)2012/1/23 ?????????????????DB???????????!??TimesTen?????????? ??(WMV)??(MP4)2012/1/23 ???????????????????????????!GoldenGate?????????????????????(WMV)??(MP4)2012/1/23 ???????????EDA/CEP???????????!Oracle CEP?????????·?????????????(WMV)??(MP4)2012/1/23 ????????????????????????????????!???????????????????(WMV)??(MP4)2011/2/15 ???????????????????????????????RAC ????????????????(WMV)??(MP4)2012/1/23 ????????????????????????????????!Oracle Net ??????????????(WMV)??(MP4)2012/1/23 ?????????????????????????????:???????????????0??????(WMV)??(MP4)2010/5/19 ???????????????????????????!???????????????????????(WMV)??(MP4)2012/1/23 ?????????Oracle Real Application Clusters????????????!RAC????????????????????(WMV)??(MP4)2011/3/1 ???????Core Tech Oracle Database Core Tech SeminarOracle Data Guard,Oracle Recovery Manager(RMAN),Flashback??(WMV)??(MP4)2012/5/14 ???????Core Tech Oracle Database Core Tech SeminarOracle Real Application Clusters,Oracle Clusterware,Oracle Automatic Storage Management??(WMV)??(MP4)2012/5/14 ???????Big Data Appliance?????????????????????(WMV)??(MP4)2012/5/14 ???????Oracle Real Application ClustersRAC????10??!US Oracle??????????????Oracle Real Application Clusters????????????(WMV)??(MP4)2012/2/20 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager 12c ???????(WMV)??(MP4)2012/1/23 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager 12c ???????/?????????? ????(WMV)??(MP4)2012/1/23 ???????Oracle Enterprise Manager 12c Oracle Enterprise Manager 12c ???????/????????? ????(WMV)??(MP4)2012/1/23 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager 12c ??????? ????(WMV)??(MP4)2012/1/23 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager 12c ??????? ????(WMV)??(MP4)2012/1/23 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager 12c ????????? ????(WMV)??(MP4)2012/1/23 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager 12c ????????? ????(WMV)??(MP4)2012/1/23 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager 12c Exadata?????(WMV)??(MP4)2012/1/23 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager 12c ???????????(WMV)??(MP4)2012/2/6 ???????Oracle Enterprise Manager 12cOracle Enterprise Manager???????????·?????????????(WMV)??(MP4)2012/5/14 ???????Database Appliance???????????1Box?????2???????? Oracle Database Appliance ??????(WMV)??(MP4)2011/12/19 ???????Database ApplianceOracle Database Appliance????????·????????(WMV)??(MP4)2012/5/14 ???????Oracle Data MiningOracle DB????!????????????(WMV)??(MP4)2010/9/14 ???????Oracle Data MiningOracleDB????????????(WMV)??(MP4)2011/6/29 OracleDirect ?????????????????!?????·???????ABC -Oracle Database???(WMV)??(MP4)2012/3/5 OracleDirect ???????????????????????-SE·EE??????-??(WMV)??(MP4)2010/5/19 OracleDirect ?????????????Oracle Database EE?SE???????????!???(WMV)??(MP4)2010/2/25 OracleDirect ????????????????98(????)???Oracle Database?????????! ~?????????????Oracle Database?????!~??(WMV)??(MP4)2009/12/2 OracleDirect ????????????!! Oracle Database????????(WMV)??(MP4)2010/10/13 OracleDirect ?????SQL?????????SQL?????????!SQL?????(WMV)??(MP4)2011/4/12 ???????????ACE????? ??Oracle Database???????(WMV)??(MP4)2012/5/14 ???????????????????????????????????????????? ??(WMV)??(MP4)2012/1/23 ????????????????!?????????????????·???????????? ????(WMV)??(MP4)2012/1/23 ????????????????!?????????????????·???????????? ????(WMV)??(MP4)2012/1/23 Java ???? ?? ????????? ??? ?? Java??Java EEJava EE 6 ??(132page)??(WMV)??(MP4)2011/04 Java?????!???????Java?????????(WMV)??(MP4)2011/06 Java??Java???????·???????????(WMV)??(MP4)2012/01 Java??Oracle ???? Java ??????? ??(WMV)??(MP4)2011/03 WebLogic Server/????????·???? ???? ?? ????????? ??? ?? WebLogic Server????Oracle????????WebLogic ????(WMV)??(MP4)2012/1/23 WebLogic Server????:????????? FastSwap??????·???????(??) ??(WMV)??(MP4)- WebLogic Server????:???????????????????(??)??(WMV)??(MP4)- WebLogic Server????:????????? ?????????????????????·??????????????????????(CAT)(??) ??(WMV)??(MP4)- WebLogic Server????:????????? ???????????????????????:????????????????????(??) ??(WMV)??(MP4)- WebLogic Server????:????????? JRockit Mission Control(??)??(WMV)??(MP4)- WebLogic Server????:????????? JRockit Flight Recorder????WebLogic????????????(??)??(WMV)??(MP4)- WebLogic Server????:????????? ?????????????? ???????????(??)??(WMV)??(MP4)- WebLogic Server????/???????????????????????????????????WebLogic????????(WMV)??(MP4)2011/3/24 WebLogic Server????WebLogic Server?JDBC??????????(WMV)??(MP4)2010/6/17 WebLogic Server????Oracle WebLogic Server???????Web??????? -???-??(WMV)??(MP4)2010/2/17 WebLogic Server????????????????? WebLogic Server ?????????????? ??(WMV)??(MP4)2012/1/23 WebLogic Server????????????????!WebLogic Scripting Tool?????WLS???·??????(WMV)??(MP4)2012/1/23 WebLogic Server????????????????????????~Oracle WebLogic Server 11g~??(WMV)??(MP4)2010/2/10 WebLogic Server????????????????!EM???WebLogic?????(WMV)??(MP4)2010/5/27 WebLogic Server ?????????????????WebLogic Server???????????????(WMV)??(MP4)2010/3/24 WebLogic Server????Oracle???????????????????????·????!??(WMV)??(MP4)2011/5/26 WebLogic Server??·????????OracleAS???????WebLogic Server??????????(WMV)??(MP4)2010/4/22 WebLogic ServerExalogicOracle Exalogic Elastic Cloud ?? ~ Exalogic ??? ~??(WMV)??(MP4)2012/1/23 JRockit??JVM JRockit?? ??Update??(WMV)??(MP4)2011/03 CoherenceOracle Coherence ?????·????????????????(WMV)??(MP4)2012/1/23 CoherenceOracle Coherence ????????????????(WMV)??(MP4)2012/1/23 Coherence???????????!???!Oracle Coherence?????????????????????????(WMV)??(MP4)2012/1/23 Coherence????????????Coherence??????(WMV)??(MP4)2011/04 SOA/BPM/????? ???? ?? ????????? ??? ?? BPM???????????BPM?????????????? ??(WMV)??(MP4)2011/04 BPMBPM Suite 11g??????????????????(WMV)??(MP4)2011/03 CEP??????????????????????????CEP????????(WMV)??(MP4)2011/04 ????????? ???? ?? ????????? ??? ?? ?????????????????????!???·????????????(WMV)??(MP4)2010/5/25 ???????Notes??????????????(WMV)??(MP4)2010/5/20 ???????Notes??13?????????????????????!??(WMV)??(MP4)2010/4/20 ??????????????????????Notes?????????????(WMV)??(MP4)2010/3/17 ???????Mashup Award5 ????????????????????????????????·?????????(WMV)??(MP4)2010/2/23 ID??/?????? ???? ?? ????????? ??? ?? ID????????????????!!~OracleDB?????????????????????????(WMV)??(MP4)2012/1/23 ID?????????????!????ID????????????(WMV)??(MP4)2010/6/15 ID???????????!????DB?OS?????/???????????(WMV)??(MP4)2010/1/27 ??????????/???????????????·???????????(WMV)??(MP4)2011/04 ?????????????~???????????????????(WMV)??(MP4)2011/4/5 ??????????!??ID·??????????????????(WMV)??(MP4)2010/12/7 ???????????????·???????????(WMV)??(MP4)2010/6/23 ?????EPM/BI EPM/BI ??????? ???? ?? ????????? ??? ?? ???BI????????????BI?????~5W1H1T?~??(WMV)??(MP4)2010/3/17 ???BI????????????BI?????~?????????~??(WMV)??(MP4)2010/2/24 ???????BI?????????? -Evidence-based Management- ??????????(WMV)??(MP4)2010/2/18 ???BI????????????BI?????~???KPI?~??(WMV)??(MP4)2010/1/28 EPM/BI ???? ???? ?? ????????? ??? ?? ??BIEE?????????????????(WMV)??(MP4)2010/3/10 OS/??? ???? ?? ????????? ??? ?? ???Solaris??????Oracle Solaris??????(WMV)??(MP4)2010/10/14 ???SolarisSolaris 10 ?? ~????Solaris???~??(WMV)??(MP4)2010/9/14 ???ZFSZFS ???! ZFS ???????(???)??(WMV)??(MP4)2011/11/21 ???ZFSZFS ???! ??????????????????(WMV)??(MP4)2010/9/28 ???LinuxOracle Linux?Unbreakable Enterprise Kernel?????(WMV)??(MP4)2011/11/21 ???LinuxOracle Linux Unbreakable Enterprise Kernel?????????(WMV)??(MP4)2012/5/14 ???Linux??????Oracle?????????Linux????(WMV)??(MP4)2010/5/25 ????????????????????????????????????(WMV)??(MP4)2012/1/6 ???????SolarisSolaris: ??????????????? ??(WMV)??(MP4)2011/1/27 ???????SolarisOracle Solaris 11????????????????? ??(WMV)??(MP4)2012/5/14 ???????SolarisSolaris ? DTrace ?????????????(WMV)??(MP4)2010/9/21 ???SolarisOracle Solaris 11 ??????????????-IPS ??????? ??(WMV)??(MP4)2012/5/14 ???SolarisSolaris ?????????????????????????????? ??(WMV)??(MP4)2012/5/14 ???ZFSZFS?Oracle UCM????????????? ??(WMV)??(MP4)2011/12/19 ???? ???? ?? ????????? ??? ?? ???SPARCSPARC ????? ~ OVM ???????!??(WMV)??(MP4)2011/12/5 ????? ???? ?? ????????? ??? ?? ???SAN????????????? Pillar Axiom 600 ???? ??(WMV)??(MP4)2012/4/23 ???ZFSOracleDB????SunStorage7000?????(WMV)??(MP4)2010/9/9 ????????!??????????????????????(WMV)??(MP4)2012/2/6 ???ZFS??S7000???:S7000????????????(WMV)??(MP4)2011/12/5 MySQL ???? ?? ????????? ??? ?? MySQL????MySQL????MySQL?????? ????????(WMV)??(MP4)2011/7/25 MySQL???MySQL??MySQL?? ?????(WMV)??(MP4)2012/1/23 MySQL???MySQL??MySQL?? ?????(WMV)??(MP4)2012/5/28 MySQL???MySQL??MySQL?? ???????(WMV)??(MP4)2012/6/25 MySQL???MySQL??MySQL???????(WMV)??(MP4)2011/7/25 MySQL????????????????MySQL ???????????????(WMV)??(MP4)2012/1/23 MySQL???MySQL Cluster MySQL Cluster ??????(WMV)??(MP4)2012/2/6 MySQL???MySQL Cluster MySQL Cluster 7.2 ??????(WMV)??(MP4)2012/3/19 MySQL??????? MySQL ????????(WMV)??(MP4)2012/2/6

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  • Clustering [assessment] algorithm with distance matrix as an input

    - by Max
    Can anyone suggest some clustering algorithm which can work with distance matrix as an input? Or the algorithm which can assess the "goodness" of the clustering also based on the distance matrix? At this moment I'm using a modification of Kruskal's algorithm (http://en.wikipedia.org/wiki/Kruskal%27s_algorithm) to split data into two clusters. It has a problem though. When the data has no distinct clusters the algorithm will still create two clusters with one cluster containing one element and the other containing all the rest. In this case I would rather have one cluster containing all the elements and another one which is empty. Are there any algorithms which are capable of doing this type of clustering? Are there any algorithms which can estimate how well the clustering was done or even better how many clusters are there in the data? The algorithms should work only with distance(similarity) matrices as an input.

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  • identify documents from results of mahout clustering

    - by Tejas
    I am using mahout to cluster text documents indexed using solr. I have used the "text" field in the document to form vectors. Then I used the k-means driver in mahout for clustering and then the clusterdumper utility to dump the results. I am having difficulty in understanding the output results from the dumper. I could see the clusters formed with term vectors in those clusters. But how do I extract the documents from these clusters. I want the result to be the input documents appearing in different clusters.

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  • ?Oracle Database Appliance???????????

    - by Norihito Yachita
    ?????????????????????????????·????????Oracle Database Appliance???????????????????????????? ?Oracle Database Appliance????Oracle Linux??????2?????Sun Fire?????·???????????Oracle Database 11g Release 2?????Oracle Real Application Clusters???????????????? ?Oracle Database Appliance????????????????????????????????????????????????????????????????OLTP??????????????·?????????????????????????????????????????????????????????????Oracle Real Application Clusters????????????Automatic Storage Management?????????????????

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  • FreeBSD 8.1 unstable network connection

    - by frankcheong
    I have three FreeBSD 8.1 running on three different hardware and therefore consist of different network adapter as well (bce, bge and igb). I found that the network connection is kind of unstable which I have tried to scp some 10MB file and found that I cannot always get the files completed successfully. I have further checked with my network admin and he claim that the problem is being caused by the network driver which cannot support the load whereby he tried to ping using huge packet size (around 15k) and my server will drop packet consistently at a regular interval. I found that this statement may not be valid since the three server is using three different network drive and it would be quite impossible that the same problem is being caused by three different network adapter and thus different network driver. Since then I have tried to tune up the performance by playing around with the /etc/sysctl.conf figures with no luck. kern.ipc.somaxconn=1024 kern.ipc.shmall=3276800 kern.ipc.shmmax=1638400000 # Security net.inet.ip.redirect=0 net.inet.ip.sourceroute=0 net.inet.ip.accept_sourceroute=0 net.inet.icmp.maskrepl=0 net.inet.icmp.log_redirect=0 net.inet.icmp.drop_redirect=1 net.inet.tcp.drop_synfin=1 # Security net.inet.udp.blackhole=1 net.inet.tcp.blackhole=2 # Required by pf net.inet.ip.forwarding=1 #Network Performance Tuning kern.ipc.maxsockbuf=16777216 net.inet.tcp.rfc1323=1 net.inet.tcp.sendbuf_max=16777216 net.inet.tcp.recvbuf_max=16777216 # Setting specifically for 1 or even 10Gbps network net.local.stream.sendspace=262144 net.local.stream.recvspace=262144 net.inet.tcp.local_slowstart_flightsize=10 net.inet.tcp.nolocaltimewait=1 net.inet.tcp.mssdflt=1460 net.inet.tcp.sendbuf_auto=1 net.inet.tcp.sendbuf_inc=16384 net.inet.tcp.recvbuf_auto=1 net.inet.tcp.recvbuf_inc=524288 net.inet.tcp.sendspace=262144 net.inet.tcp.recvspace=262144 net.inet.udp.recvspace=262144 kern.ipc.maxsockbuf=16777216 kern.ipc.nmbclusters=32768 net.inet.tcp.delayed_ack=1 net.inet.tcp.delacktime=100 net.inet.tcp.slowstart_flightsize=179 net.inet.tcp.inflight.enable=1 net.inet.tcp.inflight.min=6144 # Reduce the cache size of slow start connection net.inet.tcp.hostcache.expire=1 Our network admin also claim that they see quite a lot of network up and down from their cisco switch log while I cannot find any up down message inside the dmesg. Have further checked the netstat -s but dont have concrete idea. tcp: 133695291 packets sent 39408539 data packets (3358837321 bytes) 61868 data packets (89472844 bytes) retransmitted 24 data packets unnecessarily retransmitted 0 resends initiated by MTU discovery 50756141 ack-only packets (2148 delayed) 0 URG only packets 0 window probe packets 4372385 window update packets 39781869 control packets 134898031 packets received 72339403 acks (for 3357601899 bytes) 190712 duplicate acks 0 acks for unsent data 59339201 packets (3647021974 bytes) received in-sequence 114 completely duplicate packets (135202 bytes) 27 old duplicate packets 0 packets with some dup. data (0 bytes duped) 42090 out-of-order packets (60817889 bytes) 0 packets (0 bytes) of data after window 0 window probes 3953896 window update packets 64181 packets received after close 0 discarded for bad checksums 0 discarded for bad header offset fields 0 discarded because packet too short 45192 discarded due to memory problems 19945391 connection requests 1323420 connection accepts 0 bad connection attempts 0 listen queue overflows 0 ignored RSTs in the windows 21133581 connections established (including accepts) 21268724 connections closed (including 32737 drops) 207874 connections updated cached RTT on close 207874 connections updated cached RTT variance on close 132439 connections updated cached ssthresh on close 42392 embryonic connections dropped 72339338 segments updated rtt (of 69477829 attempts) 390871 retransmit timeouts 0 connections dropped by rexmit timeout 0 persist timeouts 0 connections dropped by persist timeout 0 Connections (fin_wait_2) dropped because of timeout 13990 keepalive timeouts 2 keepalive probes sent 13988 connections dropped by keepalive 173044 correct ACK header predictions 36947371 correct data packet header predictions 1323420 syncache entries added 0 retransmitted 0 dupsyn 0 dropped 1323420 completed 0 bucket overflow 0 cache overflow 0 reset 0 stale 0 aborted 0 badack 0 unreach 0 zone failures 1323420 cookies sent 0 cookies received 1864 SACK recovery episodes 18005 segment rexmits in SACK recovery episodes 26066896 byte rexmits in SACK recovery episodes 147327 SACK options (SACK blocks) received 87473 SACK options (SACK blocks) sent 0 SACK scoreboard overflow 0 packets with ECN CE bit set 0 packets with ECN ECT(0) bit set 0 packets with ECN ECT(1) bit set 0 successful ECN handshakes 0 times ECN reduced the congestion window udp: 5141258 datagrams received 0 with incomplete header 0 with bad data length field 0 with bad checksum 1 with no checksum 0 dropped due to no socket 129616 broadcast/multicast datagrams undelivered 0 dropped due to full socket buffers 0 not for hashed pcb 5011642 delivered 5016050 datagrams output 0 times multicast source filter matched sctp: 0 input packets 0 datagrams 0 packets that had data 0 input SACK chunks 0 input DATA chunks 0 duplicate DATA chunks 0 input HB chunks 0 HB-ACK chunks 0 input ECNE chunks 0 input AUTH chunks 0 chunks missing AUTH 0 invalid HMAC ids received 0 invalid secret ids received 0 auth failed 0 fast path receives all one chunk 0 fast path multi-part data 0 output packets 0 output SACKs 0 output DATA chunks 0 retransmitted DATA chunks 0 fast retransmitted DATA chunks 0 FR's that happened more than once to same chunk 0 intput HB chunks 0 output ECNE chunks 0 output AUTH chunks 0 ip_output error counter Packet drop statistics: 0 from middle box 0 from end host 0 with data 0 non-data, non-endhost 0 non-endhost, bandwidth rep only 0 not enough for chunk header 0 not enough data to confirm 0 where process_chunk_drop said break 0 failed to find TSN 0 attempt reverse TSN lookup 0 e-host confirms zero-rwnd 0 midbox confirms no space 0 data did not match TSN 0 TSN's marked for Fast Retran Timeouts: 0 iterator timers fired 0 T3 data time outs 0 window probe (T3) timers fired 0 INIT timers fired 0 sack timers fired 0 shutdown timers fired 0 heartbeat timers fired 0 a cookie timeout fired 0 an endpoint changed its cookiesecret 0 PMTU timers fired 0 shutdown ack timers fired 0 shutdown guard timers fired 0 stream reset timers fired 0 early FR timers fired 0 an asconf timer fired 0 auto close timer fired 0 asoc free timers expired 0 inp free timers expired 0 packet shorter than header 0 checksum error 0 no endpoint for port 0 bad v-tag 0 bad SID 0 no memory 0 number of multiple FR in a RTT window 0 RFC813 allowed sending 0 RFC813 does not allow sending 0 times max burst prohibited sending 0 look ahead tells us no memory in interface 0 numbers of window probes sent 0 times an output error to clamp down on next user send 0 times sctp_senderrors were caused from a user 0 number of in data drops due to chunk limit reached 0 number of in data drops due to rwnd limit reached 0 times a ECN reduced the cwnd 0 used express lookup via vtag 0 collision in express lookup 0 times the sender ran dry of user data on primary 0 same for above 0 sacks the slow way 0 window update only sacks sent 0 sends with sinfo_flags !=0 0 unordered sends 0 sends with EOF flag set 0 sends with ABORT flag set 0 times protocol drain called 0 times we did a protocol drain 0 times recv was called with peek 0 cached chunks used 0 cached stream oq's used 0 unread messages abandonded by close 0 send burst avoidance, already max burst inflight to net 0 send cwnd full avoidance, already max burst inflight to net 0 number of map array over-runs via fwd-tsn's ip: 137814085 total packets received 0 bad header checksums 0 with size smaller than minimum 0 with data size < data length 0 with ip length > max ip packet size 0 with header length < data size 0 with data length < header length 0 with bad options 0 with incorrect version number 1200 fragments received 0 fragments dropped (dup or out of space) 0 fragments dropped after timeout 300 packets reassembled ok 137813009 packets for this host 530 packets for unknown/unsupported protocol 0 packets forwarded (0 packets fast forwarded) 61 packets not forwardable 0 packets received for unknown multicast group 0 redirects sent 137234598 packets sent from this host 0 packets sent with fabricated ip header 685307 output packets dropped due to no bufs, etc. 52 output packets discarded due to no route 300 output datagrams fragmented 1200 fragments created 0 datagrams that can't be fragmented 0 tunneling packets that can't find gif 0 datagrams with bad address in header icmp: 0 calls to icmp_error 0 errors not generated in response to an icmp message Output histogram: echo reply: 305 0 messages with bad code fields 0 messages less than the minimum length 0 messages with bad checksum 0 messages with bad length 0 multicast echo requests ignored 0 multicast timestamp requests ignored Input histogram: destination unreachable: 530 echo: 305 305 message responses generated 0 invalid return addresses 0 no return routes ICMP address mask responses are disabled igmp: 0 messages received 0 messages received with too few bytes 0 messages received with wrong TTL 0 messages received with bad checksum 0 V1/V2 membership queries received 0 V3 membership queries received 0 membership queries received with invalid field(s) 0 general queries received 0 group queries received 0 group-source queries received 0 group-source queries dropped 0 membership reports received 0 membership reports received with invalid field(s) 0 membership reports received for groups to which we belong 0 V3 reports received without Router Alert 0 membership reports sent arp: 376748 ARP requests sent 3207 ARP replies sent 245245 ARP requests received 80845 ARP replies received 326090 ARP packets received 267712 total packets dropped due to no ARP entry 108876 ARP entrys timed out 0 Duplicate IPs seen ip6: 2226633 total packets received 0 with size smaller than minimum 0 with data size < data length 0 with bad options 0 with incorrect version number 0 fragments received 0 fragments dropped (dup or out of space) 0 fragments dropped after timeout 0 fragments that exceeded limit 0 packets reassembled ok 2226633 packets for this host 0 packets forwarded 0 packets not forwardable 0 redirects sent 2226633 packets sent from this host 0 packets sent with fabricated ip header 0 output packets dropped due to no bufs, etc. 8 output packets discarded due to no route 0 output datagrams fragmented 0 fragments created 0 datagrams that can't be fragmented 0 packets that violated scope rules 0 multicast packets which we don't join Input histogram: UDP: 2226633 Mbuf statistics: 962679 one mbuf 1263954 one ext mbuf 0 two or more ext mbuf 0 packets whose headers are not continuous 0 tunneling packets that can't find gif 0 packets discarded because of too many headers 0 failures of source address selection Source addresses selection rule applied: icmp6: 0 calls to icmp6_error 0 errors not generated in response to an icmp6 message 0 errors not generated because of rate limitation 0 messages with bad code fields 0 messages < minimum length 0 bad checksums 0 messages with bad length Histogram of error messages to be generated: 0 no route 0 administratively prohibited 0 beyond scope 0 address unreachable 0 port unreachable 0 packet too big 0 time exceed transit 0 time exceed reassembly 0 erroneous header field 0 unrecognized next header 0 unrecognized option 0 redirect 0 unknown 0 message responses generated 0 messages with too many ND options 0 messages with bad ND options 0 bad neighbor solicitation messages 0 bad neighbor advertisement messages 0 bad router solicitation messages 0 bad router advertisement messages 0 bad redirect messages 0 path MTU changes rip6: 0 messages received 0 checksum calculations on inbound 0 messages with bad checksum 0 messages dropped due to no socket 0 multicast messages dropped due to no socket 0 messages dropped due to full socket buffers 0 delivered 0 datagrams output netstat -m 516/5124/5640 mbufs in use (current/cache/total) 512/1634/2146/32768 mbuf clusters in use (current/cache/total/max) 512/1536 mbuf+clusters out of packet secondary zone in use (current/cache) 0/1303/1303/12800 4k (page size) jumbo clusters in use (current/cache/total/max) 0/0/0/6400 9k jumbo clusters in use (current/cache/total/max) 0/0/0/3200 16k jumbo clusters in use (current/cache/total/max) 1153K/9761K/10914K bytes allocated to network (current/cache/total) 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) 0/0/0 requests for jumbo clusters denied (4k/9k/16k) 0/8/6656 sfbufs in use (current/peak/max) 0 requests for sfbufs denied 0 requests for sfbufs delayed 0 requests for I/O initiated by sendfile 0 calls to protocol drain routines Anyone got an idea what might be the possible cause?

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  • Spotlight on an ACE: Edwin Biemond

    - by jeckels
    Edwin Biemond is an active member of the ACE community, having worked with Oracle's development tooling and database technologies since 1997. Since then, Edwin has become an expert in many of Oracle's middleware technologies as well, including WebLogic and SOA. In fact, Edwin has become so prolfic that he was named the Java Developer of the Year in 2009. Edwin hails from the Netherlands, where he is an architect at the company Amis, and is also a co-author of the OSB Development Cookbook. He's a proven expert in ADF, JSF, messaging (Edifact / ebXML), Enterprise Service Bus, web services and tuning of application servers and databases. Recently, Edwin posted a blog on the road map of WebLogic 12c, going over salient features and what the future looks like for Fusion Middleware and the Application Server areas - it's well worth a read, so give it a look. A snippet: WebLogic 12.1.3 will be the first version for many FMW 12c products like Oracle SOA Suite 12c and probably come in one big jar. 12.1.3 & 12.1.4 will add extra features and improvements to Elastic JMS & Dynamic Clusters. Elastic JMS in 12.1.3 will support Server Migration so you can’t lose any JMS messages. In 12.1.4, Dynamic Clusters will have support for auto-scaling based on thresholds based on user-defined metrics. WebLogic 12.1.4 will also have an API to control the Dynamic Clusters, this way we can easily program when to stop, start or remove nodes from a dynamic cluster. Further, Edwin is hosting a session on getting your FMW environment up and running in less than 10 minutes using popular tooling to configure and manage the many FMW components you have in your technology stack. Register now for this virtual developer day to see more. We thank Edwin for his commitment to being an ACE, his work on his blog, his social media publishing and his overall commitment to helping other technologists be even more successful with Oracle products. Follow Edwin on his blog, Twitter, Facebook, LinkedIn, or read his ACE Profile

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  • Oracle Database Appliance:???????????1Box?????2????????!

    - by Yusuke.Yamamoto
    11?14????????·????????Oracle Database Appliance???????????????? ????????:????????Oracle Database Appliance??????????? Oracle Database Appliance ??? Oracle Database Appliance ??Oracle Database ?????????????????????????·??????????Oracle Database ??(1)??????(2)RAC One Node ??(3)Oracle RAC ?????????????????????? Oracle Real Application Clusters(RAC)|??????????? ??????Oracle Database 11gR2 Oracle Real Application Clusters One Node ??(1)?????DB?????????????1Box???????? Oracle Database Appliance ???Oracle Real Application Clusters(RAC) ????????????DB??????????????????(????2??????????????????????????????????????????)?1Box????4U???????????????????????? ??(2)?????DB????2???????? Oracle Database Appliance ???Oracle Appliance Manager ????????????????????????Oracle Appliance Manager ????????(7????)???????????(Oracle Database?Oracle Grid Infrastructure?Oracle Enterprise Manager??)?????????(????????????????)?????????????????????2??????? ???Oracle Database Appliance ???????????????????????·????????????? Oracle Appliance Manager:????????????:7??????????????????? ??(3)????????????:???CPU???????????????????? Oracle Database Appliance ????Pay-As-You-Grow(?????????????)???????????????·????????????????Oracle Database Enterprise Edition ???????2??~24????????????? ?????????????????Oracle Database Enterprise Edition ????????(??????????????????)??????????????? Oracle Database Appliance:???? ????????????????????????????????? Oracle Database Appliance:???? ?????? Oracle Database Appliance Oracle Database Appliance:?????? Oracle Database Appliance:?????(??) Oracle Database Appliance:3D?? ????????? Oracle Direct ????Oracle Appliance Manager ????????????????????

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  • Is This Your Idea of Disaster Recovery?

    - by rickramsey
    Don't just make do with less. Protect what you've got. By, for instance, deploying Oracle Solaris 10 inside a zone cluster. "Wait," you say, "what is a zone cluster?" It is a zone deployed across different physical servers. "Who would do that!" you ask in a mild panic. Why, an upstanding sysadmin citizen interested in protecting his or her employer's investment with appropriate high availability and disaster recovery. If one server gets wiped out by Hurricane Sandy along with pretty much the entire East Coast of the USA, your zone continues to run on the other server(s). Provided you set them up in Edinburgh. This white paper (pdf) explains what a zone cluster is and how to use it. If a white paper reminds you of having to read War and Peace in school, just use this Oracle RAC and Solaris Cluster Cheat Sheet, instead. "But wait!" you exclaim. "I didn't realize Solaris 10 offered zone clusters!" I didn't, either! And in an earlier version of this blog post I said that zone clusters were only available with Oracle Solaris 11. But Karoly Vegh pointed me to the documentation for Oracle Solaris Cluster 3.3, which explains how to manage zone clusters in Oracle Solaris 10. Bite my fist! So, the point I was trying to make is not just that you can run Oracle Solaris 10 zone clusters, but that you can run them in an Oracle Solaris 11 environment. Now let's return to our conversation and pick up where we left off ... "Oh no! Whatever shall I do?" Fear not. Remember how Oracle Solaris 11 lets you create a Solaris 10 branded zone inside a system running Oracle Solaris 11? Well, the Solaris Cluster engineers thought that was a bang-up idea, and decided to extend Oracle Solaris Cluster so that you could run your Solaris 10 applications inside the protective cocoon of an Oracle Solaris 11 zone cluster. Take advantage of the installation improvements and network virtualization capabilities of Oracle Solaris 11 while still running your application on Oracle Solaris 10. You Luddite, you. That capability is in the latest release of Oracle Solaris Cluster, version 4.1, which became available last Friday. "Last Friday! Is it too late to get a copy?" You can still get a free copy from our download center (see below). And, if you'd like to know what other goodies the 4.1 release of Oracle Solaris Cluster provides, see: What's New In Oracle Solaris Cluster 4.1 (pdf) Free download Oracle Solaris Cluster 4.1 (SPARC or x86) Tech Article: How to Upgrade to Oracle Solaris Cluster 4.0, by Tim Read. As always, you can get the latest information about Oracle Solaris Cluster, plus technical how-to articles, documentation, and more from Oracle Solaris Cluster Resource Page for Sysadmins and Developers. And don't forget about the online launch of Oracle Solaris 11.1 and Oracle Solaris Cluster 4.1, scheduled for Nov 7. "I feel so much better, now!" Think nothing of it. That's what we're here for. - Rick Website Newsletter Facebook Twitter

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  • Clustered Graphs Visualization Techniques

    - by jameszhao00
    I need to visualize a relatively large graph (6K nodes, 8K edges) that has the following properties: Distinct Clusters. Approximately 50-100 Nodes per cluster and moderate interconnectivity at the cluster level Minimal (5-10 inter-cluster edges per cluster) interconnectivity between clusters Let global edge overlap = The edge overlaps caused by directly visualizing a graph of Clusters = {A, B, C, D, E}, Edges = {Pentagram of those clusters, which is non-planar by the way and will definitely generate edge overlap if you draw it out directly} Let Local Edge Overlap = the above but { A, B, C, D, E } are just nodes. I need to visualize graphs with the above in a way that satisfies the following requirements No global edge overlap (i.e. edge overlaps caused by inter-cluster properties is not okay) Local edge overlap within a cluster is fine Anyone have thoughts on how to best visualize a graph with the requirements above? One solution I've come up with to deal with the global edge overlap is to make sure a cluster A can only have a max of 1 direct edge to another cluster (B) during visualization. Any additional inter-cluster edges between cluster A - C, A - D, ... are disconnected and additional node/edges A - A_C, C - C_A, A - A_D, D - D_A... are created. Anyone have any thoughts?

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  • What applications can be used in a Red Hat/CentOS cluster?

    - by Sandra
    Hi, When I look at the Red Hat cluster manuals 1 2, they only explain how to install it but not what applications can use it. I am new to clusters, so I don't know these things =) Let's say I want to 3 node high performance cluster; What applications would work with it? Also, how does an application talk to the cluster? Does the application need to have been written to support clusters? Sandra

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