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Layout is locked by another session

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    Layout is locked by another session

    In my development database, I have a set that has two forms. One is the main entry form with embedded browse and the other a dialog for adding new records. The set has a parent and one child table.

    I am the process of developing additional features. At the end of a development session a few days ago, I saved everything and closed. Nothing unusual. Now, coming back to the work, I tried to open the main form in design mode. The first right click does nothing. The next right click says the form is locked by another session.

    I am able to open the add new dialog in design mode. This form deals with the parent table only. I have several forms which add, edit, etc. to the child table and all are OK.

    Opening the form (Trans_Main_1) for use always fails with a message:

    "Script:OnPush line:30
    An unhandled exception was generated"

    varP... is a statement which has run without problem forever.

    Sometimes I will get an "unhandled error" message and Alpha will close.

    I tried to back up the database but the backup says the set is in use, which it is not, and offers to skip that part of the backup.

    I have restarted and rebooted any number of times to no avail. I tried to replace the form with a copy from my production version using UtilsObj() which says the destination set is in use.

    I have run a registry cleaner with no change. I know there are flags somewhere that Windows uses to say a file is in use but I don't know how to get to it to see if it is on or if it can be changed or if it even applies in this situation.

    Any suggestions?


    Re: Layout is locked by another session

    Here's how to close tables that remain open after windows are closed. I don't know if it will solve your particular issue, but there's no harm in trying this.

    At the Alpha Control Panel choose the File menu, then the Database Information entry in the drop downlist. Any open tables will be flagged in the left column. If you see any open tables then close that dialog, Open the Interactive Window and type


    and then press ENTER.

    This will close the tables and Alpha Five.

    I think it likely that the previous sequence will not solve your problem. The next thing I'd try is to edit your set specification. Is Referential Integrity (cascade deletes and changes) enabled? If so, turn it off, if you can. If you can't then I would define a new set for the same tables, without enabling RI. Then I'd try to "copy" the two forms to the new set.

    Let us know how you get on.

    -- tom


      Re: Layout is locked by another session

      I'm familiar with these two functions:


      But not A5_force_close_all()
      I can't find it in the WiKi, nor in the old "no longer supported" help file.

      Everytime I try it in the interactive window, Alpha blows up and I have to reload it.
      AlphaBase Solutions, LLC

      [email protected]


        Re: Layout is locked by another session

        Originally posted by Peter.Greulich View Post
        Everytime I try it in the interactive window, Alpha blows up and I have to reload it.
        Originally posted by Tom Cone Jr View Post
        This will close the tables and Alpha Five.
        -- tom
        Sounds like you are saying the same thing that Tom said but using different words...
        Al Buchholz
        Bookwood Systems, LTD
        Weekly QReportBuilder Webinars Thursday 1 pm CST

        Occam's Razor - KISS
        Normalize till it hurts - De-normalize till it works.
        Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
        When we triage a problem it is much easier to read sample systems than to read a mind.
        "Make it as simple as possible, but not simpler."
        Albert Einstein


          Re: Layout is locked by another session

          Originally posted by Al Buchholz View Post
          Sounds like you are saying the same thing that Tom said but using different words...
          Oh! You're right. So is this function documented somewhere?
          AlphaBase Solutions, LLC

          [email protected]


            Re: Layout is locked by another session

            Peter, a5_force_close_all() is the only choice supplied by the intellisense auto-complete feature of the editor if you begin typing a5_force. Maybe there's a disconnect here between the code editor and the help system?


              Re: Layout is locked by another session


              I followed your suggestions. No tables are open in the Database Information display. I removed referential integrity while I was fooling around earlier so nothing there. Alpha 5 closes but there is no change the next time. The form won't open.

              I also tried loading the form in the interactive window following a suggestion in an earlier post: frm = form.load("Trans_main_1"). Hitting enter results in closing Alpha5 immediately.

              The problem form is part of the set which is not displayed in the Database Information window. Any way I can get to it?



                Re: Layout is locked by another session

                Don't know. It's curious you didn't try my second suggestion (copying the forms to a new set).

                It's beginning to sound like portions of your database have been corrupted. If you're unable to restore the set's dictionaries from a good backup, and you were unable to copy the forms to a new set as I previously mentioned, it's probably time to save what you can and then start building the forms from scratch using a new set.


                  Re: Layout is locked by another session

                  Post a sample...
                  AlphaBase Solutions, LLC

                  [email protected]


                    Re: Layout is locked by another session

                    I wasn't able to try to create a new set and copy the forms to it yesterday.

                    Today I removed the problem set from the database and created a new one without referential integrity and copied the forms to it from a backup version.

                    It looks like it's working now and I can get to the design mode of the form and all the expected functionality that I have tried is working.

                    Thanks for all the help.