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  • Database migration

    - by graham.reeds
    We are migrating a client's own database schema to our own (both SQL-Server). Most of the mappings from their schema to ours have been indentified and rules been agreed on if the columns don't exactly align (default values etc.) Previously, depending on who was assigned the task, this has been done either with a mixture of sql scripts or one-off vb apps. I was thinking there must be a application (commercial or otherwise) where you can assign these mappings/rules and have it stream the data across. Surely the setting up and configuration of this tool would be less than the creation of ad-hoc scripts... Is there an app? Apart from the obvious 'be careful' any tips to mitigate the stress of a non-DBA porting one schema to another?

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  • Paginator (Migration from Cake 1.3 to 2.0

    - by Christian Waschke
    i am struggling with the paginator in cakephp 2.0. While i am trying to migrate my application to 2.0 i cant find any solution to jump directly to the last page. In 1.3 it was quiet to do that from outside like this: echo $this->Html->link(__('Flights'), array('controller' => 'flights', 'action' => 'index','page' => 'last')); but this little trick putting 'page:last' in does not work anymore in 2.0. Of course there is a Paginator function called last, but this would only help if i would be already inside the app. My Problem is to access from an outside link directly the last page of the paginator. Thank you for reading, cdjw

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  • Oracle WebCenter: uma nova vis&atilde;o para os Portais

    - by Denisd
    O conceito de “Portal” existe há muito tempo, mas está sempre mudando. Afinal de contas, o que é um portal? Nos primórdios da internet, o termo “portal” era utilizado para sites que guardavam muitas páginas (ou seja, muita informação). “Portal de notícias” era um termo comum, embora estes “portais” não passassem de um conjunto de páginas estáticas, que basicamente serviam conteúdo aos usuários. Com a evolução da tecnologia, os web sites passaram a ficar mais dinâmicos, permitindo uma interação maior do usuário. Sites de comunidades sociais são o melhor exemplo disso. Neste momento, o “portal” passou a ser não apenas um grupo de páginas, mas um conjunto de serviços e recursos dinâmicos, como a possibilidade de publicar fotos e vídeos, e compartilhar este conteúdo com amigos on-line. Aqui temos o que podemos chamar de “Portais Sociais”. Ao mesmo tempo, dentro das empresas, outra mudança estava acontecendo: a criação de padrões de comunicação entre aplicativos, sendo o mais famoso destes padrões a tecnologia de Web Services. Com estes padrões, as aplicações podem trocar informações e facilitar a experiência dos usuários. Desta forma, é possível desenvolver mini-aplicativos (chamados “portlets”), que publicam informações dos sistemas corporativos nas páginas dos portais internos. Estes portlets permitem interações com os sistemas, para permitir que os usuários tenham acesso rápido e fácil às informações. Podemos chamar estes portais de “Portais Transacionais”. Aqui temos 2 pontos que eu gostaria de chamar a atenção: 1 – O desenvolvimento de portlets é necessário porque eu não consigo publicar uma aplicação inteira no portal, normalmente por uma questão de padrões de desenvolvimento. Explicando de uma forma simples, a aplicação não foi feita para rodar dentro de um portal. Portanto, é necessário desenvolvimento adicional para criar mini-aplicativos que replicam (ou melhor, duplicam) a lógica do aplicativo principal, dentro do portal. 2 – Os aplicativos corporativos normalmente não incluem os recursos colaborativos de um portal (por exemplo, fóruns de discussão, lista de contatos com sensores de presença on-line, wikis, tags, etc), simplesmente porque este tipo de recurso normalmente não está disponível de forma “empacotada” para ser utilizada em um aplicativo. Desta forma, se eu quiser que a minha aplicação tenha um fórum de discussão para que os meus clientes conversem com a minha equipe técnica, eu tenho que desenvolver todo o motor do fórum de discussão dentro do meu aplicativo, o que se torna inviável, devido ao custo, tempo e ao fato de que este tipo de recurso normalmente não está no escopo da minha aplicação. O que acaba acontecendo é que os usuários fazem a parte “transacional” dentro do aplicativo, mas acabam utilizando outras interfaces para atender suas demandas de colaboração (neste caso, utilizariam um fórum fora da aplicação para discutir problemas referentes ao aplicativo). O Oracle WebCenter 11g vem para resolver estes dois pontos citados acima. O WebCenter não é simplesmente um novo portal, com alguns recursos interessantes; ele é uma nova forma de se pensar em Portais Corporativos (portais que reúnem os cenários citados acima: conteúdo, social e transacional). O WebCenter 11g é extenso demais para ser descrito em um único post, e nem é a minha intenção entrar no detalhe deste produto agora. Mas podemos definir o WebCenter 11g como sendo 3 “coisas”: - Um framework de desenvolvimento, aonde os recursos que as minhas aplicações irão utilizar (por exemplo, validação de crédito, consulta à estoque, registro de um pedido, etc), são desenvolvidos de forma a serem reutilizados por qualquer outra aplicação ou portlet que seja executado neste framework. Este tipo de componente reutilizável é chamado de “Task Flow”. - Um conjunto de serviços voltados à colaboração, como fóruns, wikis, blogs, tags, links, people connections, busca, bibliotecas de documentos, etc. Todos estes recursos colaborativos também estão disponíveis como Task Flows, desta forma, qualquer aplicação que eu desenvolva pode se beneficiar destes recursos. - Um “Portal”, do ponto de vista tradicional, aonde os usuários podem criar páginas, inserir e compartilhar conteúdo com outros usuários. Este Portal consegue utilizar os recursos desenvolvidos no Framework, garantindo o reuso. A imagem abaixo traz uma visão deste Portal. Clique para ver em tamanho maior. A grande inovação que o WebCenter traz é que a divisão entre “portal” e “aplicação” desaparece: qualquer aplicação agora pode ser desenvolvida com recursos de portal. O meu sistema de CRM, por exemplo, pode ter um fórum de discussão para os clientes. O meu sistema de suporte pode utilizar Wikis para montar FAQs de forma rápida. O sistema financeiro pode incluir uma biblioteca de documentos para que o usuário possa consultar os manuais de procedimento. Portanto, não importa se eu estou desenvolvendo uma “aplicação” ou um “portal”; o que importa é que os meus usuários agora terão em uma única interface as funcionalidades dos aplicativos e os recursos de colaboração. Este conceito, dentro da Oracle, é chamado de “Composite Applications”, e é a base para a próxima geração dos aplicativos Oracle. Nos próximos posts iremos falar (é claro) sobre como o WebCenter e o UCM se relacionam, e que tipo de recursos podem ser aproveitados nas aplicações/portais. Até breve!

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  • How do operating systems… run… without having an OS to run in?

    - by Plazmotech Binary
    I'm really curious right now. I'm a Python programmer, and this question just boggled me: You write an OS. How do you run it? It has to be run somehow, and that way is within another OS? How can an application run without being in an OS? How do you tell the computer to run, say, C, and execute these commands to the screen, if it doesn't have an OS to run in? Does it have to do with a UNIX kernel? If so, what is a Unix kernel, or a kernel in general? I'm sure OSes are more complicated than that, but how does it work?

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  • How to operating systems… run… without having an OS to run in?

    - by Plazmotech Binary
    I'm really curious right now. I'm a Python programmer, and this question just boggled me: You write an OS. How do you run it? It has to be run somehow, and that way is within another OS? How can an application run without being in an OS? How do you tell the computer to run, say, C, and execute these commands to the screen, if it doesn't have an OS to run in? Does it have to do with a UNIX kernel? If so, what is a unix kernel, or a kernel in general? I'm sure OSes are more complicated than that, but how does it work? It would be really brilliant to know this! Thanks.

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  • Palm OS 5 development tools

    - by Jean Paul
    Hello. A few time ago I make a question about the Palm OS 5 development tools. Here I am again. I have seached a lot in Google and in many developer sites but all the links are broken and the sites are too old. Does anyone know a real tool in any OS (The best wold be for Windows or Linux) so I can develop, test and deploy software for Palm OS 5???? Thanks!!!!

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  • Best practices for re-IP'ing / migrating servers and applications

    - by warren
    Some of this question would be highly application-specific, but what approaches do you take when looking to migrate applications from one server/platform to another and servers form one network segment to another? For applications that can't be re-IP'd (many exist in this category), the general answer is to nuke and pave (or extend a clusterable application, then remove the segment that needs to be "moved"). For "normal" applications (httpd, mail, directory services, etc), what are the checks ou perform before, during, and after a move to ensure the health of the migrated app/server? An example with Apache: backup httpd conf directory change httpd conf files to use new IP address of server change (or add) IP of server restart Apache verify web server still serves pages reboot server verify environment comes back up healthy

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  • IntPtr in 32 Bit OS, UInt64 in 64 bit OS

    - by Ngu Soon Hui
    I'm trying to do an interop to a C++ structure from C#. The structure ( in C# wrapper) is something like this [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct SENSE4_CONTEXT { public System.IntPtr dwIndex; //or UInt64, depending on platform. } The underlying C++ structure is a bit abnormal. In 32 bit OS, dwIndex must be IntPtr in order for the interop to work, but in 64 bit OS, it must be UInt64 in order for the interop to work. Any idea how to modify the above structure to make it work on both 32 and 64 bit OS?

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  • Annotate pdfs in Firefox on mac-os

    - by Space_C0wb0y
    I have several pdfs stored locally. I have file:/// links to these pdfs in my local TiddlyWiki. When I open one of these, Firefox opens it inline, as expected. Now I want to add annotations to these pdfs as I read them. Since I have not found a way to do this when viewing them inline, I used the open in Preview feature in the context menu. This works fine, but when I want to save, Preview complains that the document is locked. It appears Firefox creates a temporary copy that it gives to preview to open, instead of the real thing. Is there any way to work around this? I want to either be able to save the annotated files from preview or to do the annotations directly in Firefox. I am using Snow-Leopard with Firefox 3.6. Edit I can annotate the pdf just fine when I open them in preview directly.

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  • Few questions on restoring an os from an image

    - by user23950
    Is it possible to backup and restore more than 1 partition?For example, I have a multi-boot computer. And I want to backup them all(Windows xp, Windows 7, and Ubuntu) If it is possible, what are the applications that offer this kind of feature? Please give me an idea on how this works. If ever its possible.

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  • Apache and Virtual Hosts Problem on OS X

    - by Charles Chadwick
    I recently formatted and installed my iMac. I am running 10.6.5. Prior to this format, I had the default Apache web server up and running with several virtual hosts, and everything ran beautifully. After formatting, I set everything back up again, and now Apache is acting funny. Here is a description of what I have going on. My default root directory for the Apache Web server is pointed to an external hard drive. In my httpd.conf, here is what I have: DocumentRoot "/Storage/Sites" Then a few lines beneath that: <Directory /> Options FollowSymLinks AllowOverride All Order deny,allow Allow from all </Directory> And then beneath that: <Directory "/Storage/Sites"> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny Allow from All </Directory> At the end of this file, I have commented out the user dir include conf file: Include /private/etc/apache2/extra/httpd-userdir.conf And uncommented the virtual hosts conf file: Include /private/etc/apache2/extra/httpd-vhosts.conf Moving on, I have the following entry in my vhosts file: <VirtualHost *:80> DocumentRoot "/Storage/Sites/mysite" ServerName mysite.dev </VirtualHost> I also have a host record in my /etc/hosts file that points mysite.dev to 127.0.0.1 (I also tried using my router IP, 192.168.1.2). The problem I am coming across is, despite having PHP files in /Storage/Sites/mysite, the server is still looking at /Storage/Sites. I know this because in the DocumentRoot contains a php file with phpinfo() (whereas the index.php file in mysite has different code). I have tried setting up other virtual hosts, but they are still doing the same thing. Also, "NameVirtualHost *:80" is in my vhosts file. I saw as a solution on another thread here. Doesn't seem to make a difference. Any ideas on this? Let me know if this is not enough information.

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  • Chromium OS Lime installation confusion

    - by Abhinav Kulshreshtha
    I Used to download Chromium Vanilla build Virtual-box image from hexxeh. recently i wanted to try Lime build which only gives a .img file. I used the mentioned Windows Image Writer (link given on the lime website.) and a 8GB Transcend Website. When i tried to boot from pen-drive, the screen only flashed and nothing happened. Now when i tried to access my pendrive, it shows only 0.99 gb capacity. What happened wrong. How can i recover my pendrive. I tried to create vdi using VBoxManage.exe convertdd chromiumos.img chromiumos.vdi command given in This link. But it is not running on VBox either.

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  • Transferring DHCP using Windows Server Migration Tool - Why is Powershell is crashing on the import of the .mig file?

    - by Mike
    I am migrating DHCP from a windows server 2003R2 DC to a Windows Server 2008R2 DC I've followed this video and its predecessor (Installing Windows Server Migration Tools) http://technet.microsoft.com/en-us/video/migrating-dhcp-using-the-windows-server-2008-r2-migration-tools.aspx I went through everything smoothly until the last step. I have exported a .mig file with my DHCP configuration on the old 2003r2 server. I transferred this .mig file over to my 2008R2 server, when running the import command, it will appear to work for a minute or two and then I get a generic windows "Powershell has stopped working" error and I have to close the program. Under the problem details I see the following: FileVersionOfSystemManagementAutomation: 6.1.7600.16385 InnermostExceptionType: System.AccessViolationException OutermostExceptionType: System.AccessViolationException DeepestPowerShellFrame: unknown OS Version: 6.1.7600.2.0.0.272.7 LocaleID: 1033 Seems like there are permissions issues maybe? I am running powershell as an admin and am logged in to the server as a domain administrator. Any Ideas? Thanks

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  • migrating C++ code from structures to classes

    - by eSKay
    I am migrating some C++ code from structures to classes. I was using structures mainly for bit-field optimizations which I do not need any more (I am more worried about speed than saving space now). What are the general guidelines for doing this migration? I am still in the planning stage as this is a very big move affecting a major part of the code. I want to plan everything first before doing it. What are all the essential things I should keep in mind?

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  • OWB 11gR2: Migration and Upgrade Paths from Previous Versions

    - by antonio romero
    Over the next several months, we expect widespread adoption of OWB 11gR2, both for its new features and because it is the only release of Warehouse Builder certified for use with database 11gR2. Customers seeking to move existing environments to OWB 11gR2 should review the new whitepaper, OWB 11.2: Upgrade and Migration Paths. This whitepaper covers the following topics: The difference between upgrade and migration, and how to choose between them An outline of how to perform each process When and where intermediate upgrade steps are required Tips for upgrading an existing environment to 11gR2 without having to regenerate and redeploy code to your production environment. Moving up from 10gR2 and 11gR1 is generally straightforward. For customers still using OWB 9 or 10.1, it is generally possible to move an entire environment forward complete with design and runtime audit metadata, but the upgrade process can be complex and may require intermediate processing using OWB 10.2 or OWB 11.1. Moving a design by itself is much simpler, though it requires regeneration and redeployment. Relevant details are provided in the whitepaper, so if you are planning an upgrade at some point soon, definitely start there.

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  • Google I/O 2010 - Data migration in App Engine

    Google I/O 2010 - Data migration in App Engine Google I/O 2010 - Data migration in App Engine App Engine 201 Matthew Blain Learn about the App Engine bulk loader and see an example of migrating data from an external data source into the app engine datastore--and back out. Do you have data stored in a traditional, relational DB which you'd like to upload to App Engine? This session will teach you how. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 6 0 ratings Time: 44:26 More in Science & Technology

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  • libvirt qemu/kvm migration problem

    - by Panda
    I am using kvm and libvirt on my Dell server. Now i am trying to migrate one virtual machine from a physical server to another. However, I failed everytime. In virsh on physicalServer1, I typed: virsh # migrate virtualmachine1 qemu+ssh://username@physicalServer2/system error: operation failed: migration to 'tcp:physicalServer2:49163' failed: migration failed Then I searched FAQ part on libvirt.org. It says: error: operation failed: migration to '...' failed: migration failed This is an error often encountered when trying to migrate with QEMU/KVM. This typically happens with plain migration, when the source VM cannot connect to the destination host. You will want to make sure your hosts are properly configured for migration (see the migration section of this FAQ) I managed to ssh physicalServer2 from a shell on virtualmachine1 so the above red part did not explain my failure. I also open ports on physicalServer2, iptables -L shows following information: Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:domain ACCEPT udp -- anywhere anywhere udp dpt:bootps ACCEPT tcp -- anywhere anywhere tcp dpt:bootps ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:domain ACCEPT udp -- anywhere anywhere udp dpt:bootps ACCEPT tcp -- anywhere anywhere tcp dpt:bootps ACCEPT tcp -- anywhere anywhere state NEW tcp dpts:49152:49215 Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- 192.168.122.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- 192.168.122.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT) target prot opt source destination The /var/log/libvirt/qemu/virtualmachine1.log on physicalServer2: 2011-05-06 13:37:30.708: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.14 -enable-kvm -m 2048 -smp 1,sockets=1,cores=1,threads=1 -name openjudge-test -uuid a8c704bc-a4f9-90db-3e57-40e60b00aac1 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/virtualmachine1.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -boot c -drive file=/media/nfs/virtualmachine1.img,if=none,id=drive-ide0-0-0,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=20,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=00:16:36:8a:22 :a0,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:2 -vga cirrus -incoming tcp:0.0.0.0:49163 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 char device redirected to /dev/pts/0 2011-05-06 13:37:30.915: shutting down The /var/log/libvirt/qemu/virtualmachine1.log on physicalServer1 is empty. Both physical servers are using Ubuntu 11.04. The libvirt and kvm used are installed by apt-get. The libvirt version is 0.8.8.

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  • Experience migrating legacy Cobol/PL1 to Java

    - by MadMurf
    ORIGINAL Q: I'm wondering if anyone has had experience of migrating a large Cobol/PL1 codebase to Java? How automated was the process and how maintainable was the output? How did the move from transactional to OO work out? Any lessons learned along the way or resources/white papers that may be of benefit would be appreciated. EDIT 7/7: Certainly the NACA approach is interesting, the ability to continue making your BAU changes to the COBOL code right up to the point of releasing the JAVA version has merit for any organization. The argument for procedural Java in the same layout as the COBOL to give the coders a sense of comfort while familiarizing with the Java language is a valid argument for a large organisation with a large code base. As @Didier points out the $3mil annual saving gives scope for generous padding on any BAU changes going forward to refactor the code on an ongoing basis. As he puts it if you care about your people you find a way to keep them happy while gradually challenging them. The problem as I see it with the suggestion from @duffymo to Best to try and really understand the problem at its roots and re-express it as an object-oriented system is that if you have any BAU changes ongoing then during the LONG project lifetime of coding your new OO system you end up coding & testing changes on the double. That is a major benefit of the NACA approach. I've had some experience of migrating Client-Server applications to a web implementation and this was one of the major issues we encountered, constantly shifting requirements due to BAU changes. It made PM & scheduling a real challenge. Thanks to @hhafez who's experience is nicely put as "similar but slightly different" and has had a reasonably satisfactory experience of an automatic code migration from Ada to Java. Thanks @Didier for contributing, I'm still studying your approach and if I have any Q's I'll drop you a line.

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  • File I/O OS handling

    - by Albinoswordfish
    This isn't a direct coding question but more of a OS handling mechanism. I was reading somebody's previous question regarding C# and file handling. Apparently C# was throwing an exception regarding a file being locked when trying to access this. So my question is, does C# use an internal lock to handle file I/O between processes, or does the OS use some type of mutual exclusion for file I/O? From what I learned about operating systems, well at least unix, is that the OS doesn't implement any type of mutual exclusion for processes trying to access the same file.

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  • How to get Host OS (operating system) parameter of ZIP archive in C#

    - by bao
    Look. I have ZIP archives prepared in different os'es: mac, linux, windows. In windows file names encoded in DOS CP866, mac & linux in UTF-8. I need to know (in code) in which os zip file was prepared to decode file names correctly. There is a Host OS paramterer in "Central directory structure" of zip file (look http://www.fileformat.info/format/zip/corion.htm ). How to get 0005h 1 byte Host OS parameter in C#?

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