NGlossary
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multithreading
A mechanism that enables the DBH to fully exploit the CPU.
Multithreading means that the DBH processes several jobs concurrently by
using so-called threads. Each thread has information on the curr ent status of a
particular job stored in it. When a job needs to wait for the comp letion of an I/O
operation, DBH uses the CPU to process some other job.
N
network
All computers linked via TRANSDATA.
O
OLTP
(Online Transaction Processing) In an OLTP application, a very large number of
users access the same programs and data. This usually occur s under the
control of a transaction monitor (TP monitor).
online backup
If AFIM logging is active, the database can be saved during a session. The ability
to save a database online is determined with the BMEND utility routin e.
online DBTT extension
Extension during ongoing database operation of the num ber of possible records
of a record type. The DAL commands ACT DBTT-INCR, DEACTDBTT-INCR,
DISPLAYDBT T-INCR and EXTEND DBTT can be used to administer the online
extension of DBTTs.
See also automatic DBTT extension.
online realm extension
Extension of user realms and DBDIR in ongoing database operation. For the
purposes of administration of online extensibility of realms, you have the DAL
commands ACT INCR, DEACT INCR, DISPLAY INCR and REACTIN CR.
See also automatic realm extension.
open transaction
Transaction which has not been closed with FINISH or FINISH WITH CANCEL,
or with COMMIT or ROLLBACK.