void setMultithreaded(
  boolean flag
)

Set the Multithreaded flag for this PersistenceManager. Applications that use multiple threads to invoke methods or access fields from instances managed by this PersistenceManager must set this flag to true. Instances managed by this PersistenceManager include persistent or transactional instances of PersistenceCapable classes, as well as helper instances such as Query, Transaction, or Extent.