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SGIO processing is mistakenly ignored when both of the following conditions are true:

1. SGIO processing is specified either by the SGIO system option or the SGIO=YES data set option
2. you are reading a data set that is created with SAS in a Windows x64 operating environment

However, while you are creating the data set, SGIO correctly bypasses the Windows system file cache.

Note that when this issue occurs, no error message or warning is displayed.

Click the Hot Fix tab in this note to access the hot fix for this issue.

See the technical paper, "Achieving Better I/O Throughput Using SGIO in the Microsoft Windows Environment" for information on SGIO processing.

Operating System and Release Information

A fix for this issue for Base SAS 9.21_M3 is available at: