https://community.blueprism.com/t5/Product-Forum/out-of-memory-exception/m-p/51755#M6748 I have tried to parse excel file with more than 9000 records The parsing is getting complete but when I tried to open the collection it's giving me the exception.   Wed, 07 Mar 2018 11:01:00 GMT AmitPatnaik 2018-03-07T11:01:00Z https://community.blueprism.com/t5/Product-Forum/out-of-memory-exception/m-p/51755#M6748 I have tried to parse excel file with more than 9000 records The parsing is getting complete but when I tried to open the collection it's giving me the exception.   Wed, 07 Mar 2018 11:01:00 GMT https://community.blueprism.com/t5/Product-Forum/out-of-memory-exception/m-p/51755#M6748 AmitPatnaik 2018-03-07T11:01:00Z https://community.blueprism.com/t5/Product-Forum/out-of-memory-exception/m-p/51756#M6749 There are knowledgebase articles on this.   The root cause can be found by doing an internet search for '.NET datatable out of memory' - it is how .NET handles large blocks of data in datatables (which is effectively what a collection is), the solution is to reorchestrate your solution to handle smaller bits of the data at a time and also the knowledgebase article has advice about removing rows and invoking the garbage collector. Wed, 07 Mar 2018 17:04:00 GMT https://community.blueprism.com/t5/Product-Forum/out-of-memory-exception/m-p/51756#M6749 Denis__Dennehy 2018-03-07T17:04:00Z