I need to read an indexed vsam file sequentially from the beginning.If I give the access as 'DYNAMIC' and the passing LOW-VALUES to the key and then using START file name ,will it works?
Also do I need to use READ filename NEXT record or simple READ is enough?
If I need to read the file till the end of file,then every time do I need to used the READ fielname NEXT record statement?
Joined: 13 Jun 2007 Posts: 632 Location: Wisconsin
I've always been told that processing a VSAM sequentially is very bad from a performance perspective. I know at our shop, the system recognizes this kind of access and throttles your access so you get less CPU.