![[assets/wl_lock_tuple.png|256]] - **Description**: The process is waiting to acquire a lock on a specific row (tuple). This occurs during `UPDATE`, `DELETE`, or `SELECT FOR UPDATE` when another session has already signaled its intent to modify that specific row. - **Operations**: - [[Operations/LockRows]] - [[Operations/ModifyTable]] - **Resources**: [[Resources/CPU|CPU]], [[Resources/Memory|Memory]]