Specifies the name of the directory (which must already exist) into which UltraLite will place the temporary file (with a
name derived from the database name).
Specifying a temporary directory with faster I/O characteristics can improve the performance of things like temporary tables
which are large relative to the cache size. Long-running transactions can also consume noticeable space in the temp file.
Paths with spaces require quotes. Otherwise, the client returns SQLE_UNABLE_TO_CONNECT_OR_START.