Question
Maantic
IN
Last activity: 13 Mar 2025 0:50 EDT
Pega Robotics Memory Size Issue
I am running the automation 24/7 and having a loop to process the each record. For every iteration, memory size is increasing and after reaching the maximum memory, bot get stuck and required restart. Is there a way to clear the virtual memory like GC. Could you please help me on it
Pegasystems Inc.
US
@AsvinthS17189176I suspect the issue is with how you are looping. Are you using a ForLoop, ListLoop (or if using 22.1 a WhileLoop)? If you are using labels or a general loop in your execution path (i.e. a circular execution path), then the stack doesn't get cleared. If you use a loop component, then each iteration will clear the stack and should free up memory.
If you are using 19.1 (or this also works in 22.1, but you have new loops to use there), you can create an infinite loop (i.e. one you don't want to end until you explicitly break it) by setting the limit of a ForLoop to -1. Since it only increments, it will never reach that limit and will go on until you can the break method (like when you encounter an error or reach some condition where you want the loop to cease).
Maantic
IN
@ThomasSasnett I am not using infinite loop but the limit of for loop let’s assume 11,500 row items & how do clear the stack?? When iterated new item will replace the existing value in the stack am I right?
Updated: 13 Mar 2025 0:50 EDT
Pegasystems Inc.
US
@AsvinthS17189176 Yes. If you reach the end of a record in the loop, the stack should be cleared before the next record in the loop is executed. You should see that happen in the logs as the "Propagated..." and "Executed" Automation lines. If you aren't seeing those in your loop, then that indicates it isn't clearing. Are you using 19.1 or 22.1? Do you have anything that you are storing in memory (like a table) that might be growing?
In 22.1 there is a method for GC.Collect() available in the Toolbox.