HP 3000 Manuals HP 3000 Manuals
Transaction Management for BULK Operations Bulk processing, by using only one ALLBASE/SQL command to operate on multiple rows, provides a way of minimizing the time page or table locks are held. Locks are only held while moving rows between database tables and an array defined by the program, and operations can be done while holding data in that array without holding locks against the database. Because the BULK FETCH command may need to be executed several times before an entire active set is retrieved, locks obtained to execute this command may be held longer than locks needed to execute the other BULK commands. Therefore this command is most useful for applications running when multi-user DBEnvironment access is minimal or when concurrent transactions do not need to update the table that is the target of the BULK FETCH. Transaction management is further discussed in the ALLBASE/SQL Reference Manual .