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Database shown as "Not responding"

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    Database shown as "Not responding"

    I have an online database which I do some maintenance using Alpha Five 11. The database has about 32,000 records. One basic table that I work with consists of 8 data elements of one file in the database. This is set up as an active link table. When I run a query against the whole table to produce a browse consisting of all the records, the database seizes. It's the only way to describe it. Once the first page of data is displayed, at the top of the screen the phrase "Not Responding" is displayed and/or a blue circulating circle in place of the cursor. At that point, nothing happens. The only way to proceed is to close Alpha 5.

    Any ideas?

    Eric Johnson

    #2
    Re: Database shown as "Not responding"

    Windows reports an Alpha session as "Not Responding" because the Alpha program spends it's efforts doing what you asked it to do rather than updating the screen to tell you it's doing what you asked it to do. Have you checked the task manager for Alpha cpu activity?

    I have no idea what you mean by "online database" so I can't tell you what's taking so long.
    There can be only one.

    Comment


      #3
      Re: Database shown as "Not responding"

      Yes I checked. The task manager reports "not responding" as well. The database is about 33,999 records and the query calls for 8 pieces of data. I've waited for 10 minutes. Do I just need to wait longer?

      Don't know what else to call it. I'm here in Alabama and the database is in Florida running under SQL Server. The normal use of the database is by users (1,200 people all over the world) adding and editing data using scripts. If it helps, this will get you in without going through the normal process to look at one of my own records ... http://www.toller-l.org/tollerdata/p...e.asp?ID=24779

      Comment


        #4
        Re: Database shown as "Not responding"

        Eric

        What is the query that is being run?

        One basic table that I work with consists of 8 data elements of one file(table?) in the database.

        How many records in the table? How many are you retrieving?

        Did/can you customize the SQL code for the active link table?
        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

        http://www.iadn.com/images/media/iadn_member.png

        Comment


          #5
          Re: Database shown as "Not responding"

          The query is a simple dump of a file in the db. We routinely dump the database, do some offline calculations, and then reload the data with the new calculations. It's a fairly simple process though very computation tedious if done online.

          Something is wrong with the results and we're trying to look at the data each step of the way. At this point, we've reloaded the data into a temporary file on the server using the Alpha 5 SQL "tools" prior to updating the actual records. I just want to look at the data to verify that what was put into the process is what came out. So, I'm just trying to query the file I uploaded ... 33,500~ records each with 9 (I miscounted for the earlier messages) data elements. There are three text fields and 6 numeric fields. Of these, 3 are to 5 decimals and 3 are integer. None is a key. So, all that is required is a simple query of one table that's 33,500~ records deep.

          As to using SQL for the query itself, no I have not done this.

          Sitting here writing this made me realize that I've not gone back quite far enough. I need to check some examples of the data before A5 reloads it. This I will do tomorrow evening.

          You can see the intended result with the UrL I sent Stan. Scroll to the bottom and look at the right side of the menu for "Genetic information". That's the individual dog result of 33,500 sets of calculations ... each to the 10th generation.

          Eric

          Comment


            #6
            Re: Database shown as "Not responding"

            Eric

            I'm curious if a passive linked table downloads the data any faster than the active linked.
            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

            http://www.iadn.com/images/media/iadn_member.png

            Comment


              #7
              Re: Database shown as "Not responding"

              I don't use sql much but the folks I've assisted have wound up using

              SQL::ResultSet::ToDBF()
              or
              SQL::ResultSet::ToOpenTable()

              in place of active or passive linked tables where speed was an issue.
              There can be only one.

              Comment


                #8
                Re: Database shown as "Not responding"

                Al-

                In answer to your question of will the passive link table exhibit the same problem. The answer is no! I built a passive link table with the same criteria as the table I was having problems with and the passive table loaded in about a 5 seconds.

                I can do what I need to do with the passive table so thanks for thinking of it. I still wonder what the problem is with the active link construct.

                Eric
                Last edited by Eric Johnson; 02-17-2015, 10:01 PM.

                Comment


                  #9
                  Re: Database shown as "Not responding"

                  Just thought of something. I went back into both definitions and changed the "where" clause to select only about the last 500 records. There was no noticeable change in the speed of the passive link table, The active link table was improved immeasureably. In fact, I didn't notice the "Not responding" flag but once and then it was only for perhaps 5 seconds.

                  The result of my uninformed analysis is that an active link table shouldn't be used for really large tables. Only 8-9 elements is no big deal but 33,500 records appears to be too large to be of general use.

                  Eric

                  Comment


                    #10
                    Re: Database shown as "Not responding"

                    Each option has its advantages and disadvantages.

                    Active linked takes a little more tuning because it has the advantage of write from the read/write concept.

                    Good to hear the passive works well.

                    I've had good luck with the append or update operations with active linked tables - if you need to put some or all of the data back in the SQL table...
                    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

                    http://www.iadn.com/images/media/iadn_member.png

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