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Exception of type 'System.OutOfMemoryException' was thrown

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  • Exception of type 'System.OutOfMemoryException' was thrown

    Hi,

    Using Alpha Anywhere Version 12.2, Build 1839 and Application Server Build 1839-4234.

    Application has been running for a long time (+2 years) without problems (thanks!). Database is 3834.69 MB with the main table having 20,872 rows.

    Recently users experiencing problems such as data not being returned back into grids. Restarting the Application Server seems to fix the problem for a while. Looking at the error logs :-

    Wed Jul 27 05:49:18 2016
    Exception has been thrown by the target of an invocation.
    Exception of type 'System.OutOfMemoryException' was thrown.

    Execution Stack:
    0#1 evaluate_shared_private(
    0#37 OOhttpdServerClientMIME(ptemp,"AppServerMain")

    Is there a fix?

    Thanks.

  • #2
    Re: Exception of type 'System.OutOfMemoryException' was thrown

    submit a bug report - I'd say lenny will advise you.
    Insanity: doing the same thing over and over again and expecting different results.
    Albert Einstein, (attributed)
    US (German-born) physicist (1879 - 1955)

    Comment


    • #3
      Re: Exception of type 'System.OutOfMemoryException' was thrown

      Kevin,

      Any changes to the application recently?
      What database are you using? What version?
      What server? Where? How much RAM?

      You're running out of memory. Can you think of any reason why?

      Comment


      • #4
        Re: Exception of type 'System.OutOfMemoryException' was thrown

        There is almost noting to go on here, so it is difficult to make a suggestion to fix this. The answers to David's questions would be a big help.

        That said, the majority of memory problems are caused by incorrectly handling uploaded files. See http://www.alphasoftware.com/alphafo...ng-large-files

        Lenny Forziati
        Vice President, Internet Products and Technical Services
        Alpha Software Corporation

        Comment


        • #5
          Re: Exception of type 'System.OutOfMemoryException' was thrown

          Hello David,

          Thanks for your reply. In Answer,

          No changes recently to the application.
          The database is MS SQL Express 2012.
          Server is Windows Server 2008 R2 Standard, hosted.
          Memory is 4GB ofwhich 2.53GB currently in use.

          Regards David.
          Kevin

          Comment


          • #6
            Re: Exception of type 'System.OutOfMemoryException' was thrown

            More data added recently? Anything the users are doing which returns ALL data? A lot of data?

            Are you returning 20k rows? If so, have you always been returning 20k rows?

            Comment


            • #7
              Re: Exception of type 'System.OutOfMemoryException' was thrown

              Data being added all the time, perhaps 30 - 100 records per day to the 20,000 plus table.

              The users would only have access to subset of the data, say 1500 records max.

              Comment


              • #8
                Re: Exception of type 'System.OutOfMemoryException' was thrown

                And nothing has changed recently? No changes to SQL Server... to the Windows Server... to the host environment?

                Comment


                • #9
                  Re: Exception of type 'System.OutOfMemoryException' was thrown

                  No, nothing changed which makes me thing it's a size problem but used memory is ok, disk space etc. Ok...

                  Comment


                  • #10
                    Re: Exception of type 'System.OutOfMemoryException' was thrown

                    I've not read anything that points to a hardware issue. Can you pinpoint user/users and what they're doing at the time of the exception?

                    Comment


                    • #11
                      Re: Exception of type 'System.OutOfMemoryException' was thrown

                      Users have access to 2 programs, one to add data to two tables and one to enquire on the data.

                      The problem appears to be when they use the enquiry but this will never retrieve the whole 20,000 records as there is a filter on the grid which restricts the data to just the users data.

                      Is there any additional logging that can be enabled on the server to pinpoint the problem?

                      Thanks,
                      Kevin

                      Comment


                      • #12
                        Re: Exception of type 'System.OutOfMemoryException' was thrown

                        Starting to see quite a lot of errors now, have attached yesterdays A5XbasicErrorStackLog file.

                        Is this something to do with downloading the data into Excel?

                        Regarding the "Exception of type 'System.OutOfMemoryException' was thrown." message there is plenty of disc spaces and plenty of system memory available.

                        Any help appreciated.
                        Regards,
                        Attached Files

                        Comment


                        • #13
                          Re: Exception of type 'System.OutOfMemoryException' was thrown

                          Did you address the issue with Lenny further or did you ignore his post?
                          Insanity: doing the same thing over and over again and expecting different results.
                          Albert Einstein, (attributed)
                          US (German-born) physicist (1879 - 1955)

                          Comment


                          • #14
                            Re: Exception of type 'System.OutOfMemoryException' was thrown

                            I believe I answered the questions Lenny was interested in yes.

                            I have also read the post regarding ‘500 Error when uploading large files’.

                            Regarding uploading files I have a UX mobile form which is used to upload photographs using the standard Image Upload action JavaScript. The images are saved to image datatypes in the SQL database. The maximum filesize is set to 3mb. The program has been in use for almost 3 years now without problems, only recently have the problems started to occur.

                            Regards,

                            Comment


                            • #15
                              Re: Exception of type 'System.OutOfMemoryException' was thrown

                              The log pretty clearly identifies the source of the problem as downloading files, as it logs the error as being generated from a call to Response.SendFile(). How large are the files that you are downloading? The code in the log is loading the file in to memory, then duplicating it in memory in order to convert it to UTF8. This means you need at least twice the size of the file available as unfragmented free memory accessible by the Alpha process.

                              Lenny Forziati
                              Vice President, Internet Products and Technical Services
                              Alpha Software Corporation

                              Comment

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