HP Integrity NonStop J-Series - Manual (Page 21)

HP NonStop AutoTMF Software User’s Guide—429952-017
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Introduction to HP NonStop
AutoTMF
Software
This section of the manual discusses the following topics:

An overview of HP NonStop AutoTMF software (AutoTMF)

A description of the facilities that are enabled by NonStop AutoTMF software, both
immediately and through a migration process
HP NonStop AutoTMF software enables programs that are not programmed to use the
HP NonStop Transaction Management Facility (TMF) product to access and update
audited data. It automatically manages TMF transactions required to access audited
data and enables a rapid migration to an audited database.
You must prepare your programs to use NonStop AutoTMF software by invoking a
utility that processes object files. This utility inserts a software layer, called the NonStop
AutoTMF runtime library, between each program and the file system. This layer
automatically manages the transactions required to access audited data.
The preparation utility is automatic and processes collections of object files quickly and
economically. Preparation does not require program source and does not change the
logic flow of the program.
The migration to an audited database is incremental. You audit your database files as
desired; NonStop AutoTMF software determines which files are audited and makes the
necessary transaction operations whenever necessary.
In providing a migration path for applications that do not currently use audited data,
NonStop AutoTMF software offers several useful features:

Because NonStop AutoTMF software only requires object files, applications
provided by third parties can be configured to use NonStop AutoTMF software.

Because NonStop AutoTMF software does not alter the basic processing by
application programs, your application execution procedures require no change.
Changes to operational procedures to manage the audited database may be
required.

Through use of proprietary technology, NonStop AutoTMF software will perform
many database I/Os in each transaction. Accesses to multiple files are managed
within a single transaction. NonStop AutoTMF software can duplicate the
performance of programs that explicitly manage transactions.

If your application already manages transactions for an audited database, you can
use NonStop AutoTMF software to audit any other files that are currently
unaudited.