Hi Dinesh;

   What your app could be experiencing is the limitations of a 32 bit application. The MS-Windows O/S only allocates 4G of memory address space for any 32 bit App execution. It then installs part of its OS modules  in the upper address space. Leaving your app with just over 2G of memory left over to operate. Once your App consumes the 2G, the most likely ending will be termination of the App by the O/S without any chance of a recovery.

   In your case from what you have described of your App's design, the next best option would be to consider updating it to run as a 64 bit App. This will allow the MS-Windows O/S to allocate a much more robust address space for large object instantiation / large data set handling.

Food for thought.

Regards ... Chris 

Hi.

In our application, we found that one of a nested For loop, dynamic creating the tabpages and in each tabpage, userobject is inserted. My question is Do we have any limit of items under an user object? After 1250 - 1300  items on userobject, application crashes without any error prompt.

Can you tell us the amount of memory used by your application just before it crashes?

As for the first question, there was a limit in the past but it was large enough.

Read the following from help file. It mentions a limitation (the one I have in mind is a larger one).

There is an internal limit on the sizeof compiled Pcode on any script. Pcode is the interpreted language into which scripts are compiled. A script that exceeds this limit can be compiled successfully, but the error "Maximum script size exceeded" displays when you attempt to save the script. Note that the amount of Pcode generated from a given script is not directly proportional to the number of lines of code, so you might encounter this error in a script with 1200 lines of code, but not in a script with 1500 lines of code. To avoid receiving this error, move code to functions that you post or trigger in the event script.

Anyway, having really long scripts is considered a bad practice in modern programming languages, and should be avoided.

Andreas.

" 1300  items on userobject "

thats a huge number of objects on one tab object, i assume that you mean they are all visual user objects?   windows can run out of resources and crash your application.   

instead of 1300 user objects, can you combine them into a small number of datawindows?