StoredProcedureQuery setHint(
  String hintName, 
  Object value
)

Set a query property or hint. The hints elements may be used to specify query properties and hints. Properties defined by this specification must be observed by the provider. Vendor-specific hints that are not recognized by a provider must be silently ignored. Portable applications should not rely on the standard timeout hint. Depending on the database in use, this hint may or may not be observed.