From Xojo Documentation
The maximum number of seconds that an operation may wait before a lock is cleared (if any). The default is 10.
If an operation has to wait longer than this amount of seconds then the operation will fail (with a suitable SQL error).
If the value is less than or equal to 0 then all busy handlers will be disabled and the operation will wait indefinitely.
This value can be changed at any time.
This example sets the Timeout to 30 seconds.