Berkeley DB can be used as an XA-compliant resource manager.
        The XA implementation is known to work with the Tuxedo
        transaction manager.
    
      
        The XA support is encapsulated in the resource manager
        switch db_xa_switch, which defines the following
        functions:
    
      
        
          - __db_xa_close.
            Close the resource manager.
        
 
          - __db_xa_commit. 
            Commit the specified transaction.
        
 
          - __db_xa_complete.
            Wait for asynchronous operations to complete.
        
 
          - __db_xa_end. 
            Disassociate the application from a
            transaction.
        
 
          - __db_xa_forget.
            Forget about a transaction that was heuristically
            completed. (Berkeley DB does not support heuristic
            completion.)
        
 
          - __db_xa_open. Open
            the resource manager.
        
 
          - __db_xa_prepare.
            Prepare the specified transaction.
        
 
          - __db_xa_recover.
            Return a list of prepared, but not yet committed
            transactions.
        
 
          - __db_xa_rollback.
            Abort the specified transaction.
        
 
          - __db_xa_start.
            Associate the application with a transaction.
        
 
        
       
      
        The Berkeley DB resource manager does not support the
        following optional XA features:
    
      
        
          - 
            Asynchronous operations
        
 
          - 
            Transaction migration
        
 
        
       
      
        The Tuxedo System is available from Oracle BEA
        Systems.