details commands and procedures in MPE that can improve your
productivity with HP 3000 systems. Send your tips to email@example.com.
We got two
DDS-3 tape drives in August and ordered 125-meter tapes. We have been
using the 120-meter tapes we had for the old tape drives until the
new ones came. The new tapes came today. The vendor sent 150-meter
tapes that say DDS-4, instead of the DDS-3 tapes that we ordered. Can
they be used in the DDS-3 drive anyway?
and Warren Bunnell reply:
in fact they will not even load.
state that you have a DDS-3 drive and that you have been feeding it
120-meter tapes. I am sure by now you realize that you have been
using the DDS-3 drive as a DDS-2, same speed and recording capacity
(1Mb/second for 4Gb). In order to obtain the real throughput of the
DDS-3 device and the recording capacity (2MB/second for 12GB), you
must use DDS-3 125-meter tapes.
Now for the 150
meter tapes. Indeed, you cannot use them in the DDS-3 drive. The
length really has nothing to do with it; rather the 150-meter tape is
thinner than the 125/120/90/60 meter tapes and is subject to
stretching and breakage in a non-DDS-4 device. DDS-4: 5.6 microns,
DDS-3: 6.8 microns.
Whats the command for aborting all user sessions?
Were trying to develop a controlled way of ensuring no one is
logged on prior to system backup.
LOGOFF command will do it, but thats kind of a big hammer.
Note that LOGOFF will also abort the session that issues the command,
unless you specifically exclude it. It also prevents any new jobs or
sessions from logging on, so it must be followed by a LOGON command.
Both commands can only be issued from the console, I believe.
Jeff Vance adds:
ABORTJOB script (and/or UDC) on Jazz at jazz.external.hp.com/src/scripts/
could work for you. If you download the script and name it ABORTJ,
you could do the following: :abortj @ This will abort all jobs and
sessions on your system, except for you.
recently installed an N-Class machine and have an interesting
problem. We do not get any messages on the system console. No tape
mounts, no TELLOPs, nothing. I have checked to make sure the console
is, in fact, assigned to the console (LDEV 20). So that appears to
not be the problem. And yes, it is logged into the system as
OPERATOR.SYS. The system otherwise seems to be operating just fine.
You can answer console messages, but the only way to see them is with
the RECALL command. Im really scratching my head on this
Campbell and Jon Backus reply:
sounds like Easytime. If anybody has even run Easytime interactively,
it will cause this to happen. The batch job doesnt even have to
be running for the console messages to be diverted.
working on a 967 and a 927, both running MPE 6.0. I need to change
the IP address of the systems. In NMMGR I have found where to change
the IP address of each system, but my problem is that these two
systems are connected with a dsline so that files can be copied back
and forth. Where in NMMGR do I go in order to update the IP addresses
so that when a DSLINE command is given the system will be able to
find the other HP?
you enter NMMGR, press f2 to get into the NSDIR file, then press f1,
Update directory, to list all the DSline connections. Type in the one
you want and press f6, modify.
[Editors note: this is not necessary in most
circumstances since when you try DSLINE the source system will send
out a PROBE request using the machine name. For example, I have a
machine with a node name of GERI, short for GERONIMO. GERI does not
appear in any host file, DNS or NSDIR file, yet I can very easily
DSLINE to it. Caveat: this might not work across a pair of routers
with bridging disabled, making DNS or a HOSTS file necessary in this
line, Keven Miller notes:
erased my NSDIR entries. Just place the appropriate entries in your
HOSTS.NET.SYS file, and DSLINE will find your other HP 3000s. For me
HOSTS is much easier to edit.
If you have
enabled DNS with a RESLVCNF.NET.SYS file, you can get the patch to
enable NSSWITCH, which allows use of both files, RESLVCNF and HOSTS.
I have preferred to check my HOSTS file first before DNS. My NSSWITCH
file currently contains hosts :
note: The current NSSWITCH patches are NSRGD65A for MPE 6.0; NSRGD68A
for MPE 6.5; and NSRGD69A for MPE 7.0.]
new to MPE, and I thought Id be clever and get around the need
to use Editor by invoking the Posix shell and running vi. When I do
that, I get the following: Unknown terminal
Specifically, in the shell, use the command export
TERM=hp2392a, or, before you go into the shell, setvar term
recently downloaded and installed text2pdf on our HP 3000. The
installation went fine and we can create PDF files in the Posix shell
as long as we are signed on as MANAGER.SYS. Our intentions are to use
this under MPE (we are running MPE/iX 5.5) and create some of our
batch reports in PDF format and emailing them. What do we need to do
to access text2pdf from other users so we can create pdf files in our
and Mark Wonsil reply:
Simply copy it to some group with appropriate capabilities.
PUB.SYS works, but I would not recommend it. A better choice would be
to copy it to a group and account where you keep miscellaneous
utility programs. There are no specific capabilities required for
Store-to-Disc option allow for a parallel store,
analogous to a parallel store to tape? For example, when a parallel
store to tape is performed, the store writes to two or more tape
drives at the same time. Is there a parallel store-to-disc option
that allows for the store to write to two or more disc files at the
same time (as opposed to running multiple store-to-disc jobs)?
Scott and Joe Taylor reply:
the same syntax for parallel stores works for disk files as well as
tape files. I really dont know if you would get any benefit
from this, but if you went to the trouble of building your STD files
on specific disks, then it might be worthwhile.
the recommended life or max usage of DLT tapes?
www.dlttape.com will have lots of
information for you. One thing to remember is that when they talk
about the number of passes (500,000 passes), it does not mean number
of tape mounts.
SuperDLT tapes, the tape is divided into 448 physical tracks of 8
channels each giving 56 logical tracks. This means that when you
write a SuperDLT tape completely you will have just completed 56
passes. If you read the tape completely, you will have done another
The DLTIV tapes
(DLT7000/8000) have a smaller number of physical and logical tracks,
but the principle is the same.
The number of
passes for DLTIIIXT and DLT IV tapes is 1,000,000. Its 500,000
for the DLTIII. The shelf life is 30 years for the DLTIIIXT and DLT
IV tapes and 20 for the DLTIII.
I have a
DETAIL dataset (with 26 fields in it) that has its four key items
associated with Automatic Masters. I would like to add fifth item
from this dataset also to be associated with another new Automatic
Master (or may be Manual Master). How do I accomplish this? Does
redefining the field into a key item associated with an Automatic
Master automatically add all those entries into the Automatic
is a fairly easy task with any of the third party tools (DBGeneral,
Adager or Flexibase). The steps involved would be specific to the
particular tool you may have. If youre unsure of what steps are
involved, contact the vendors support group for assistance.
And, yes, all the items get added to the Automatic Master.
that JINFO only works against my jobs that are either executing or
waiting. If I do CALC
JINFO(#J1234,EXISTS) it comes back TRUE for
executing and waiting jobs but if #J1234 is in the READY
state it comes back false.
trying to wait for the job to finish, but if the job is already
finished by the time it gets to the loop, it fails with an error (Job
does not exist. (CIERR 3042)). This happens even though the
JINFO documentation states that READY is one of the
possible responses for this option. Why is this happening?
Grunwald and Jeff Vance reply:
also works on scheduled or :breakjobd. If you dont see
the job/session via :showjob then JINFO will not see it
In your loop,
there may be a window where STDLIST output is READY and the job still
exists (probably small if the condition exists at all). More likely,
the documentation should be changed to remove that state, even though
READY is a valid spoolfile state.
job=#Jnnn command is a good way to wait for a job to terminate. If
the job is already done, the PAUSE command returns immediately. You
can also place a maximum number of seconds to wait for the job to
complete and PAUSE will return once the job finishes or that max
seconds expires, which ever occurs first. I believe that PAUSE will
be more efficient than JINFO in a WHILE loop.
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