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Oh boy... <copy> The Set.., Read requires two fetches. The Chain one. </copy> Not true.... Time to get out your RPG manuals... SetLL accesses the file's access path, to position RPG's cursor. No data is fetched by this opcode. Read and its variants fetch data, and bump the cursor. Chain is a combination of a SetLL and ReadE, though there are optimizations to allow CHAIN to perform better than the separate opcodes. Chain does not bump the program's cursor. Now, here's an interesting article that probably offers more performance gain than the old chain/setll question. http://www-912.ibm.com/s_dir/slkbase.NSF/0/d6738e1cd37e1f33862565c2007cef79?OpenDocument The implication is that poor management of record blocking can adversely effect performance. Eric
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