1 1 vote is it supported by 2PL? Databases databases transaction-and-concurrency two-phase-locking-protocol concurrency conflict-serializable + – aditi19 889 views answer comment Share Follow Print See 1 comment 1 1 comment reply register_user_19 commented Dec 8, 2018 reply Follow flag no Lock_x1(Y) (exclusive lock on Y) by transaction T1, then again Lock_x2(Y) (exclusive lock on Y) by transaction T2: NOT POSSIBLE 1 1 replyShare Please log in or register to add a comment.