Override the DBSPACETEMP configuration parameter for a session
To override the DBSPACETEMP configuration parameter, you can use the DBSPACETEMP environment variable for both temporary tables and sort files. This environment variable specifies a comma- or colon-separated list of dbspaces in which to place temporary tables for the current session.
- DBSPACETEMP typically yields better performance.
When dbspaces reside on character-special devices (also known as raw disk devices), the database server uses unbuffered disk access. I/O is faster to unbuffered devices than to regular (buffered) operating-system files because the database server manages the I/O operation directly.
- PSORT_DBTEMP specifies one or more operating-system directories
in which to place sort files.
These operating-system files can unexpectedly fill on your computer because the database server does not manage them.