Description
QDB uses temporary files for many purposes, not least to hold the working copies of the QDB data and index files. By default these and other temporary files are stored in whatever directory Windows considers to be the proper location for temporary files. Generally this is the fastest drive available.
This can give rise to problems if, for example, the temporary directory is on a ram drive and very large temporary files have to be accomodatedan enormous amount of disk thrashing occurs as Windows tries to summon up enough virtual memory to do the job. In such cases it is better to force QDB's temporary files to be stored in another location.
If QDBTempFileLocation is '' (i.e., an empty stringthe default), or does not correspond to a valid directory, QDB will use the Windows default temporary directory. If QDBTempFileLocation corresponds to a valid directory QDB will store its files there.