In databases and transaction processing the term Locks with ordered sharing comprises several variants of the two-phase locking (2PL) concurrency control protocol generated by changing the blocking semantics of locks upon conflicts. Further softening of locks eliminates thrashing.

• Autonomic computing

• D. Agrawal, A. El Abbadi, A. E. Lang: The Performance of Protocols Based on Locks with Ordered Sharing, IEEE Transactions on Knowledge and Data Engineering, Volume 6, Issue 5, October 1994, pp. 805–818, ISSN 1041-4347
• Mahmoud, H. A., Arora, V., Nawab, F., Agrawal, D., & El Abbadi, A. (2014). Maat: Effective and scalable coordination of distributed transactions in the cloud. Proceedings of the VLDB Endowment, 7(5), 329-340.