Two INFORMATION_SCHEMA tables provide information that is of particular use when managing an NDB Cluster . The FILES table provides information about NDB Cluster Disk Data files. The ndb_transid_mysql_connection_map table provides a mapping between transactions, transaction coordinators, and API nodes.

Additional statistical and other data about NDB Cluster transactions, operations, threads, blocks, and other aspects of performance can be obtained from the tables in the ndbinfo database. For information about these tables, see Section 21.6.15, “ndbinfo: The NDB Cluster Information Database”.