topic Re: Lib-F-negtime error in Operating System - OpenVMS

Lib-F-negtime error

Dipali — Mon, 10 Apr 2006 07:29:55 GMT

Hi

i would like to know when LIB-F-Negtime error occur in vms system.what is reason for it.and what is solution to avoid it.
Details are os version=Openvms v8.2
Occurance of error:- received this error when batch job ran then log having this error.

Dipali.

Re: Lib-F-negtime error

Jim_McKinney — Mon, 10 Apr 2006 07:43:57 GMT

You don't note which facility within the batch job - basically the error is saying that the software computed the difference of two times and the result was negative. Errors of this sort usually occur when the system clock is set back in time and your software is comparing the current time with what is thought to have been a previous time. Was your system clock changed during the run of the batch job.

Re: Lib-F-negtime error

Dipali — Mon, 10 Apr 2006 10:09:41 GMT

hi i recvd the error as follows

%LIB-F-NEGTIM, a negative time was computed
17:03:26, Mailing main logfile

Dipali

Re: Lib-F-negtime error

Jim_McKinney — Mon, 10 Apr 2006 10:14:58 GMT

No much info to go on there. Is command line verification "on" during the batch job? Was this a one time occurance or is it repeatable? If you can repeat it - execute the batch job with a "$ SET VERIFY" early in the command stream so that it becomes obvious which program is output-ing the message.

Re: Lib-F-negtime error

Antoniov. — Mon, 10 Apr 2006 12:31:50 GMT

Hi Dipali,
try with
$ HELP /MES NEGTIM
and you can read

The computed time was less than the system zero date (17-NOV-1858).

If I understand, you are trying to submit a jobe before november 17th, 1858.

Antonio
http://it.openvms.org

Re: Lib-F-negtime error

Volker Halle — Mon, 10 Apr 2006 12:52:05 GMT

Dipali,

this is most likely a programming error within an application on your system. You need to find out, which image (.EXE file) inside your batch job reported this error.

If you can reproduce this error, consider to add a $ SET VERIFY into the DCL procedure, which runs in your batch job.

If the error is intermittent, consider to turn on image accounting ($ SET ACC/ENA=IMAGE) and look at the image accounting records, once this problem has happened again: $ ACC/TYPE=IMAGE/SINCE=/FULL and look at the Final status text: to find the corresponding image, which exited with the %LIB-F-NEGTIM error.

Volker.

Re: Lib-F-negtime error

Jim_McKinney — Mon, 10 Apr 2006 12:54:53 GMT

> you are trying to submit a jobe before november 17th, 1858

More likely some application (or some part of VMS) is calling the LIB$SUB_TIMES routine and the time2 argument is (erroneously) greater than the time1 argument.

Re: Lib-F-negtime error

Jeremy Begg — Mon, 10 Apr 2006 19:21:27 GMT

Hi,

On what date did the error occur? Could it be that Daylight Savings Time ended in your region, and clock went back one hour at a critical time in your job?

Note that setting the clock back at any other time (e.g. using the SET TIME command) might also cause this error.

Re: Lib-F-negtime error

Bryan Ross — Tue, 11 Apr 2006 11:10:30 GMT

Hi Dipali

Does your batch job use the F$DELTA_TIME(start-time,end-time) lexical?

This error is generated if start-time is later than end-time.

Cheers

Bryan

Re: Lib-F-negtime error

Dipali — Wed, 12 Apr 2006 03:00:25 GMT

Hi

i am happy with answers given to me.

thanks