Only the DBLQH and NDBCNTR
        kernel blocks are directly involved in this phase.
        DBLQH allocates a record in the
        BACKUP block, used in the execution of local
        checkpoints via the DEFINE_BACKUP_REQ signal.
        NDBCNTR causes NDB_STTOR
        to execute NDB_STTOR phase 3; there is otherwise no other
        NDBCNTR activity during this
        STTOR phase.
      

