![[assets/wl_lock_transactionid.png|256]] - **Description**: The transaction is blocked while waiting for another transaction to finish and release its row-level locks. This is the primary indicator of row-level lock contention, such as multiple sessions attempting to update the same record. - **Operations**: - [[Operations/LockRows]] - [[Operations/ModifyTable]] - **Resources**: [[Resources/CPU|CPU]], [[Resources/Memory|Memory]]