What are the differences between Temporary Storage Queue (TSQ) and Transient Data Queue (TDQ).?
A. – Temporary Storage Queue names are dynamically defined in the application program, while TDQs must first be defined in the DCT (Destination Control Table). – When a TDQ contains certain amount of records (Trigger level), a CICS transaction can be started automatically. This does not happen when using a TSQ. TDQ(extra partition) may be used by batch application; TSQ cannot be accessed in batch. The Transient Data Queue is actually a QSAM file. -You may update an existing item in a TSQ. A record in a TDQ cannot be updated. – Records in TSQ can be read randomly. The TDQ can be read only sequentially. – Records in Temporary Storage can be read more than once, while records stored in Temporary Data Queues cannot. With TDQs it is “one read” only.
