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
In VOLUTIL, what
is the difference between SHOWUSERLOG, SHOWSYSLOG? Or between
ALTUSERLOG and ALTSYSLOG? I thought that SHOWSYSLOG was for the
system volume set and SHOWUSERLOG for all the application volume
sets. But it appears that the system has two different log files for
each volume set.
Paul Courry quotes
from the MPE/iX 6.0 Communicator article on the Transaction
Transaction Manager (XM) is an integral part of the
MPE/iX file system. It provides a facility to log all the
transactions that are done on a file that is attached to XM via a
system intrinsic. It ensures data integrity by protecting such files
across system crashes.
on MPE/iX are of two categories: system files and user files. System
files are label tables, directories and SSM bitmaps. User files are
those created by the user. All the transactions on system files are
logged onto an XM system log file on the master volume of each volume
set, just as all the transactions on user files (such as IMAGE/SQL
and KSAM files) are logged onto an XM user log file on the master
Is there a list
somewhere of why the HP impact printers start flashing 13 when there
is no paper jam?
Cynthia Fowler replies:
jam sensor is probably going bad. We had that problem
before with our 256x printers and had to have the sensor replaced.
I am considering
running Apache/iX with PRI=CS. Any negatives?
John Burke replies:
been running Apache/iX this way for years on several different
machines. No negatives whatsoever. In fact, I recommend that Apache
always be run in the CS queue. Remember, the transactions are
generally very short. In my job stream I use altproc pin=0;pri=cs.
This way I do not have to worry about the global jobpri setting. Of
course the Apache user the job runs under must have OP or SM to issue
this command, which might violate your security procedures.
When booting from
the alternate path (a tape created by sysgen) I get - IPL error
BAD LIF MAGIC. Any ideas what is wrong?
Doug Werth replies:
this is because the tape was created on, for example, a DDS-II
machine but is trying to be read on a DDS-I. [Note: the original
poster confirmed this was the problem.]
I came in this
morning to a crashed system. It appears I have a Bad System
Logical Sector that caused the crash as that was the last thing
on the console when it went down and now when it tries to recover the
MPE_SYSTEM_VOLUME_SET it gives me the error again (and again). I
assume at this point, I will need to replace that disc drive and do a
reload. Fortunately, the drive is part of the smallest volume. Are
there any websites that show the necessary steps to do a reload
(assuming I can find my latest SLT)? Are there cheat sheets
John Burke replies:
Do you have a
copy of the System Software Maintenance Manual? This has the
instructions. Otherwise, just print out what you need from one of the
SSMMs at docs.hp.com. If you are using something other than HPs
TurboStore, you should also check your backup products manual
We try to allow
certain computers to connect to one of our HP 3000s via FTP in the
File INETDSEC.NET.SYS. As the list of IP-Adresses will exceed one
line, we tried to follow the editing tips from the manual: To
continue an entry on the next line, place a slash (/) at the end of
the line to be continued. Why doesnt this work?
Greg Skvorak replies:
indicated that it is a backslash \ as the final character
on the line rather than a forward slash for the continuation
Jeff Kell suggested that you could also use vi from the shell and
have one very long line.]
Im trying to
get an old 927LX on our network. How do I determine the physical path
of the LAN interface controller (the format is something like
John Burke and Bob J
both replied that the path for the 9x7 is 56. However, Steve Macsisak
suggested that to find this out for any system, run mapper at the ISL
prompt or, if the system is up, SYSGEN -> IO -> LPATH.
I need to know the
values of previous month and year from HP variable. Is it possible? I
mean, if HPDATETIME and HPYYYYMMDD can show todays date and
month, is there any such variable that shows me previous month and
Jeff Vance replies:
answer is no. If you are willing to run a script that
returns these values, then yes.
into conflicting advice on whether I can put HSC FW SCSI cards into
my 9x9. What is the answer?
Bob J replies:
it. We wish the HSC cards would work on a 3000 as they are much
faster. The HSC 100BT cards actually get up near 100 megabits/s. The
A2969A FWD cards can burst at nearly triple the speed of a 28696A.
John Clogg elaborates:
The HSC SCSI
cards are not supported by MPE. The only HSC device supported is the
upper bus converter that is used to drive the PB expansion cage. I
visited the CSY headquarters in Cupertino for an executive
briefing back in 1998 or 1999, and asked the people there when
MPE would support the HSC FW/D SCSI cards which were available on the
equivalent 9000s at the time. The answer I got was
never. They were already planning the move to the PCI
bus, and had made the decision not to support the HSC cards on
into trouble on a MPE/iX 6.5 system sorting a large variable length
record file and I was hoping someone would have some input. I have
tons of contiguous space on that volume set. Ive tried setting
the ;STACK= on RUN SORT.PUB.SYS, but nothing is working.
Craig Lalley replies:
a variable length record file you should use the syntax >input
filename,#numrec,rec-size, where rec-size is: A positive
integer specifying the maximum allowable number of bytes in a record.
This parameter may be used to set the record size of the output file,
but is used mainly for files containing variable-length records. When
sorting such files, this parameter should be set to the size of the
largest record present in the input. If rec-size is not specified
when sorting variable-length record files, SORT/XL will use the block
size as the maximum record size. This could result in more space than
necessary being used for the scratch file, as well as causing some
degradation of performance.
A fellow developer
of mine is attempting to read an entire message file
nondestructively. Several attempts have been made using the fcontrol
47 and read commands but the application just keeps reading the same
record in the message file. Is there a way to nondestructively read a
record in a message file, move the pointer, do a nondestructive read,
move the pointer, etc until the end of the message file?
Ken Hirsch and
Michael Abootorab reply:
What you want
to do is open the file with the COPY aoption. Either you can specify
COPY in the file equation or use an aoption of 10000 (octal) in the
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