Solution
The ENSCRIBE driver supports locking, and the two relevant properties can be tweaked using Attunity Studio

Description
There are two locking properties for the ENSCRIBE driver:

enscribeLockMode Corresponds to the values of the SETMODE parameter of the Guardian Set Lock Mode procedure. The default is 3. The possible values are:

2 = Wait if locked.
3 = Reject if locked.
enscribeLockType This attribute tells the AC ENSCRIBE driver which type of locking to use:

-1 = No locking.
0 = Default Record locking.
1 = File locking.
NOTE

These properties are not relevant for read-only access.