Release 10.1A: OpenEdge Development:
Progress 4GL Handbook

The temporary database for temp-tables

The temporary database for temp-tables is largely invisible to you. You can design and use temp-tables as if they were entirely memory resident, even though Progress automatically flushes temp-table records to disk when this is necessary. The temp-table database is stored in whatever you have designated as your temporary directory. By default, this is your working directory, but you can change this by specifying a temporary directory with the –T startup option to your OpenEdge session. If you need to adjust the amount of buffer space that Progress uses in memory before it writes temp-table to disk, you can use the –Bt startup option to set this size. You can learn more about these and other startup options in OpenEdge Deployment: Startup Command and Parameter Reference .