ndbinfo: The NDB Cluster Information Database Block name To obtain a list of all block names, simply execute  SELECT block_name FROM ndbinfo.blocks . Although this is a static table, its content can vary between different NDB Cluster releases. Notes 23.5.14.5 The ndbinfo cluster_locks Table The  cluster_locks  table provides information about current lock requests holding and waiting for locks on  NDB  tables in an NDB Cluster, and is intended as a companion table to  cluster_operations . Information obtain from the  cluster_locks  table may be useful in investigating stalls and deadlocks. The  cluster_locks  table contains the following columns: ID of reporting node ID of reporting LDM instance ID of table containing this row ID of fragment containing locked row ID of locked row Transaction ID Lock request mode Lock state Whether this is first holding lock in row lock queue Operation type Milliseconds spent waiting or holding lock • duration_millis • op • detail • state • mode • transid • rowid • fragmentid • node_id • block_instance • tableid 4527