UseAdvancedTreeLock
By default BCS uses a single and exclusive lock for the whole data tree. In the 64 bit variant of BCS it is possible to activate an advanced lock with this parameter. It provides multiple-reader/single-writer locking and multiple individual locks on different levels of the data tree. Therefore multiple clients can read and/or operate on the data tree at the same time. It is recommended to activate the advanced lock if you have many clients (more than 30-40) and/or are hosting multiple services on one BCS.
Possible values: yes, true, 1, no, false, 0
Default value: no