Hidden Value details
commands and procedures in MPE that can improve your productivity
with HP 3000 systems. Send your tips to email@example.com,
or fax them to 512.331.3807.
Edited by John Burke
We have a new
A-Class system with only a DDS-4 tape drive. The tape that HP sent us
for an add-on MPE/iX product is 60m DDS-1 format. It appears the
DDS-4 cannot read the 60m DDS-1 tape. It just keeps ejecting the
tape. Is this correct?
I warned of
this problem almost a year ago, but it looks like HP did not listen.
The DDS-4 will indeed not read from or write to 60m tapes. It can
read from but not write to a 90M tape. The 120-, 125- and 150-meter
tapes are all okay for read and write.
questioner updates HPs solution:
HP has sent
the customer an external DDS-2 tape drive, cable, and terminator.
Apparently, it is etched in stone that all the 3000 tapes cut are
DDS-1 format on 60M tapes a format which cannot be read by
DDS-4. The poor guy at the Response Center said that they
wouldnt budge. He gets an A+ for his effort to take care of the
customer. He asked us to contact someone higher up to see if we could
help get this fixed. So, weve forwarded this problem to
higher ups hoping they can get the policy changed.
We want to change
our default output device for stdlists from LP to NERDD our
electronic document distribution software. Wed prefer not to
have to change the OUTCLASS= parm on every JOB card, and the HELP JOB
command indicates that this is changed in the system configuration.
The question is where?
John Clogg and
Gilles Schipper reply:
You can do
that by modifying LDEV 10 in sysgen, as follows:
md 10 outdev=nerdd
Then, reboot with a
start norecovery. You also need to ensure that NERDD is a
valid output device class name. Finally, you need to ensure that
device NERDD is openqed before initiating any job
streams otherwise the jobs will simply enter the wait
Im on 6.0
PP2 and need to adjust the rins and grins on a server. I know that I
need to update from tape, but Ive been told that I can only
make one change at a time. Id like to know if I can just change
both rins and grins, cut a tape, then boot from it.
Rick Clark replies:
I went onto
the ITRC database and found the document Increasing GLOBAL and
LOCAL RIN values (ID number MPEKBRC00005601). It says:
NOTE: It is very
important to know that GLOBAL and LOCAL RINS cannot be increased on
the system at the same time. One or the other can be done in a single
pass by creating an SLT with the changes and then booting the system
with an UPDATE CONFIG START NORECOVERY. Once this is done, the other
RINS are changed and the system is booted again.
How can I find out
information about UDC files on my system and who has them
Jeff Vance replies:
of the CHKUDC script is on Jazz now at
distinguishes between active UDC files, meaning one or
more jobs/sessions is using them vs. UDC files catalogued for users
that arent logged on. :chkudc ? provides online help for the
new parm. The chkudc script reports UDC info based on
user.acct input parameter.
If I am using a
command file to create another command file by using echo
commands, I can put the string abcd goldfish into my new
command file by saying echo abcd goldfish >blap. But
how can I put in the string >short? If I say
echo >short >blap it doesnt work.
Larry Barnes and
Jeff Vance reply:
escape character ! as in echo !>short >blap
Id like to
compare files across two systems. I have the full DS product. How do
I do this?
Dale Strommer replies:
has a compare option and will work across a dsline.
Is there is an FTP
client for the HP 3000 (MPE/iX 6.0) that supports Passive mode?
Gavin Scott and
James Hofmeister reply:
available in FTP/iX in General Release patches. See FTPDOC.ARPA.SYS
for details: FTPGD93 for C.70.00, FTPGD92 for C.65.00, FTPGD91 for
How can I find out
whats the largest value that the HPPIN variable will hold? Our
system is a 979/200 running 6.5.
Stan Sieler replies:
5.0 through MPE/iX 7.0 (base release), the maximum PIN is 8190. (In
MPE/iX 4.0 and 4.5, it was 5460). As of MPE/iX 7.0 PowerPatch 1, you
can have a maximum PIN of 12000 ... if your machine is large enough.
(The maximum value scales with the amount of memory you have.) In
short, make sure your code supports a five-digit PIN for doing things
like creating file names with embedded PINs, formatting PINs, etc.
Is there a tool
similar to md5sum from Debian Linux, but for MPE/iX?
md5sum calculates some sort of check sum for a binary
file in some method that all but guarantees that two files cannot
have the same check sum.
Lars Appel replies:
textutils 2.0 for MPE/iX at www.editcorp.com/Personal/Lars_Appel/index.html,
which, as far as I recall, includes md5sum.
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