https://communities.sas.com/t5/SAS-Procedures/PROC-Option-SGIO/m-p/54901#M15239 How can I check if a query or datastep is using SGIO ? Thu, 21 Apr 2011 15:27:26 GMT Jaime 2011-04-21T15:27:26Z https://communities.sas.com/t5/SAS-Procedures/PROC-Option-SGIO/m-p/54901#M15239 How can I check if a query or datastep is using SGIO ? Thu, 21 Apr 2011 15:27:26 GMT https://communities.sas.com/t5/SAS-Procedures/PROC-Option-SGIO/m-p/54901#M15239 Jaime 2011-04-21T15:27:26Z https://communities.sas.com/t5/SAS-Procedures/PROC-Option-SGIO/m-p/54902#M15240 Typically, I use Process Monitor to determine if a data set is opened using SGIO. Look for the Create IRP in the Process Mon Log when the file is opened. If the NO_BUFFERING flag is present, then SGIO is being used.<BR /> <BR /> In v9.3, there will be messages printed to the SAS Log to indicate that a SAS I/O file is using SGIO or if SGIO was disabled. Thu, 21 Apr 2011 17:32:34 GMT https://communities.sas.com/t5/SAS-Procedures/PROC-Option-SGIO/m-p/54902#M15240 mike_jones_SAS 2011-04-21T17:32:34Z