HP Integrity NonStop H-Series - Manual (Page 99)

NonStop AutoTMF Software Commands
HP NonStop AutoTMF Software User’s Guide—429952-013
6-27
ALTER ATMFPROGRAMS
•
STRONG isolation commits outstanding transactions whenever the
process does one of the following:
°
issues a READ or a WRITE to a device,
°
issues a WRITE to a non-audited disk file
ISOLATION overrides the value of the global parameter ATMFISOLATION.
MAXTIME 1-to-n-seconds | NO MAXTIME
specifies that transactions should be committed after n seconds. The value of n
should be a power of 2 (1,2,4,8,16,32,...) in the range of 1 to 4096. If the value
specified is not a power of 2, the value will be rounded to a power of 2.
The default is 16 seconds.
MAXTX 1-to-1000 | NO MAXTX
specifies the maximum number of concurrent transactions a program can
process. MAXTX is rounded up to the next multiple of 100 when NonStop
AutoTMF software opens the TFILE ($TMP).
The default is 100.
If an application program opens the TFILE with a transaction depth greater
than 100, NonStop AutoTMF software also increases its current value of
MAXTX to the value specified by the program, rounded up to the next multiple
of 100.
An application program must open the TFILE before NonStop AutoTMF
software opens the TFILE in order to have the maximum depth increased
under program control. Once NonStop AutoTMF software has opened the
TFILE, NonStop AutoTMF software cannot close and reopen TFILE with the
desired depth. In such cases, you must configure MAXTX specifically if a value
larger than 100 is desired.
MAXTX overrides the value set with the global parameter ATMFMAXTX.
MAXUPDATES 1-to-n | NO MAXUPDATES
specifies that transactions should be committed after n updates and inserts.
The value of n should be a power of 2 (1,2,4,8,16,32,...) in the range of 1 to
4096. If the value specified is not a power of 2, the value will be rounded to a
power of 2.
The default is 32.
NOTX | NO NOTX
Note. You can set MAXTX to a value greater than 100 only on NonStop servers that
support a maximum of 1000 transactions (T9055AER and later)