https://communities.sas.com/t5/SAS-Viya/Hidden-File-in-CASLib-Path/m-p/961786#M2784 <P>Dear colleagues,</P><P>&nbsp;</P><P>Although my question is related to an old Viya3 system on Windows, but I would like to understand more the nature of the file.</P><P>&nbsp;</P><P>I noticed that there are a large number of hidden files _B__T_F*.sashdat in the CASLib data path. I can't recognise the file name and its nature. Does anyone know what it is? As the last modified date of the files is over a year before, can I delete them safely?&nbsp;</P><P>&nbsp;</P><P>Any special handling we need to take care of if we want to migrate to Viya4?</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 13 Mar 2025 13:22:19 GMT Eddie305 2025-03-13T13:22:19Z https://communities.sas.com/t5/SAS-Viya/Hidden-File-in-CASLib-Path/m-p/961786#M2784 <P>Dear colleagues,</P><P>&nbsp;</P><P>Although my question is related to an old Viya3 system on Windows, but I would like to understand more the nature of the file.</P><P>&nbsp;</P><P>I noticed that there are a large number of hidden files _B__T_F*.sashdat in the CASLib data path. I can't recognise the file name and its nature. Does anyone know what it is? As the last modified date of the files is over a year before, can I delete them safely?&nbsp;</P><P>&nbsp;</P><P>Any special handling we need to take care of if we want to migrate to Viya4?</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 13 Mar 2025 13:22:19 GMT https://communities.sas.com/t5/SAS-Viya/Hidden-File-in-CASLib-Path/m-p/961786#M2784 Eddie305 2025-03-13T13:22:19Z