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Skepsis IT

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Posts posted by Skepsis IT

  1. Hi,

     

    I face a problem after version 0.99.95.1305. Perhaps it was before that version but now I checked the specific form. It is about a form that contains a UniPageControl and at the TabSheets are created dynamically frames. The problem is not at all frames (7) but only at two (2) specific frames. When I close the form having focused the specific frames the following Ajax Error come up

     

    O67E is not defined
    O427.retfalse.beforeclose=0;O427.close();O67E.setReadOnly(true);delete O6BA;

     

    How can I debug such errors?

    Forgot to mention that Delphi version XE6. I also attach error message and a view of one of the frames

     

    Thanks for the help.

     

    Correct if I am wrong but the problem is on frames that has a dblookupcombobox?

    post-1478-0-31585600-1467109797_thumb.png

    post-1478-0-76624300-1467109798_thumb.png

  2. Hi, firebird may be faster at read operations but at complex queries or write operations may be not. In general comparison of dbms is not that simple because many issues must be analysed to have a complete answer.

     

    Additionally,

    Does your postgre db runs on a linux machine;

    Do you have a dedicated database server;

  3. Hi,

     

    Yes you can deploy an app like that. It's bettter to have it as a service so if a log out happened the app will not terminate.

     

    About performance Farshad already answered.

  4. For not having a problem must be thread safe. For better understanding i copied a term from wikipedia

     

    Thread safety is a computer programming concept applicable in the context of multi-threaded programs. A piece of code is thread-safe if it functions correctly during simultaneous execution by multiple threads. In particular, it must satisfy the need for multiple threads to access the same shared data, and the need for a shared piece of data to be accessed by only one thread at any given time.

     

    So take a look at the specs of qr for thread safe

  5. Very well delphidude.

     

    The solution that I think to deploy is to have one common dll and multiple databases.

     

    Every customer will have a subdomain that will be used for pointing which database to use.

     

    I'll come up when I have something ready but if someone has something to suggest I will be glad.

  6. Thanks for sharing your experience delphidude. So you use a multidatabase model.

     

    I assume that your unigui dll is common for all customers and you change db connection according domain alias. Correct me if I am wrong.

     

    I didn't know that mysql can perform a backup to all database under a common instance. Moreover I think that mysql is free only for use with freeware applications, this changed since oracle bought it.

     

    Do you implemented also a mechanism for updating automatically all of your clients dbs?

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