![[assets/wl_lock_relation.png|256]] - **Description**: The query is waiting to acquire a lock on a table or view (a relation) that is currently held by another transaction. This common wait event points to transaction-level conflicts, such as DDL commands waiting for active DML transactions to finish. - **Operations**: - [[Operations/IndexScan]] - [[Operations/ModifyTable]] - **Resources**: [[Resources/CPU|CPU]], [[Resources/Memory|Memory]]