Values:0 to operating system dependent
Sets the number of temporary tables allowed to be created in the temporary segment space. A temporary table lock is needed any time a sort is too large to hold in memory, either because of a SELECT on a large table with ORDER BY or as a result of sorting a large index. You may need to increase the value of this parameter on installations with many users of applications that perform several ordered queries on large tables at the same time. For most installations, the default should be sufficient.