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тАО01-16-2006 07:31 PM
тАО01-16-2006 07:31 PM
Thanks.
Solved! Go to Solution.
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тАО01-16-2006 07:45 PM
тАО01-16-2006 07:45 PM
SolutionThe $LOGICAL functionality (including the DCL lexical) was superceeded by $TRNLNM with the introduction of VMS 4.0 (cluster support, and a reorganised SYSTEM DISK).
Of course, being VMS, they did NOT break the $LOGICAL functionality. It is STILL there, but discouraged. AFAIK (anyone with definitive info please jump in) the $LOGICAL functionality is now implemented as a jacketed call to $TRNLNM.
We still have some applications (without source code) with embedded use of $LOGICAL. Can be rather clumsy to work with.
On the documentation part I only have my own memory, which is not really suited to posting here :-) although for specific details it usually is sufficient.
hth,
Proost.
Have one on me.
jpe
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тАО01-16-2006 08:02 PM
тАО01-16-2006 08:02 PM
Re: F$LOGICAL
OpenVMS Guide to System Security
... f$logical("SYS$INPUT") then deassign sys$input $ read/end=next_command/prompt="$ "
sys$command ... This enables these users to log in at the OpenVMS login prompt ...
OpenVMS System Manager's Manual
... f$logical("SYS$INPUT") then deassign sys$input $ read/end=next_command/prompt="$ "
sys$command ... SYSMAN> ALF ADD VMS:.ZKO.VMSORG.SYSMAN.CLIENT1::SYSTEM FOOBAR. ...
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тАО01-16-2006 08:12 PM
тАО01-16-2006 08:12 PM
Re: F$LOGICAL
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тАО01-16-2006 08:17 PM
тАО01-16-2006 08:17 PM
Re: F$LOGICAL
Wim
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тАО01-16-2006 09:20 PM
тАО01-16-2006 09:20 PM
Re: F$LOGICAL
just curious.
How many of those are in TCPIP and other "recently" ported U8X-ware?
I too have occasionally stumbled over F$LOGICAL in places where I expected F$TRNLNM, but not that I recall in true "native" VMS stuff.
I would wish that those that do the porting would (before they begin!) get a somewhat deeper training in VMS, like the logical name system structure and the system disk cluster environment!
I still have nightmarish memories about the (already retired) SAN agent!
Proost.
Have one on me.
jpe
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тАО01-16-2006 10:14 PM
тАО01-16-2006 10:14 PM
Re: F$LOGICAL
Ewa
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тАО01-16-2006 10:49 PM
тАО01-16-2006 10:49 PM
Re: F$LOGICAL
Not in the tcp stuff.
Not acceptable are :
autogen.com, shutdown.com and all decw stiff.
Wim
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тАО01-16-2006 11:33 PM
тАО01-16-2006 11:33 PM
Re: F$LOGICAL
I don't have the documentation or the client sources to confirm it, however my recollection is that F$LOGICAL did not support the use of the LNM$FILE_DEV (in table LNM$PROCESS_DIRECTORY; defaulted in LNM$SYSTEM_DIRECTORY).
LNM$FILE_DEV can be used to insert logical name tables into the search sequence. It is used by some products (e.g., Oracle), and is fully documented. I did a 2004 OVMS Technical Journal article which demonstrated what can be done leveraging LNM$FILE_DEV (the Journal article can be found at http://www.rlgsc.com/publications/vmstechjournal/inheritance.html).
My recollection is that current "superseded" version of the LOGICAL interface ignores the sequencing provided by LNM$FILE_DEV and is hardwired to search the logical name tables in the default order.
I do not have time this morning to check my recollection experimentally. If my recollection is erroneous, my apologies.
- Bob Gezelter, http://www.rlgsc.com
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тАО01-17-2006 01:41 AM
тАО01-17-2006 01:41 AM
Re: F$LOGICAL
no apologies required, your description fits what I know about it!
Proost.
Have one on me.
jpe