ITEM: AP6230L

One printer runs out of paper-all queues stop printing

ENV:
        AIX 3.2.5
        Unknown machine model
        OEM terminal server

DESC:
        I have a small sockets program which I have inserted into
        the AIX print queueing system as the _mo attribute of a
        virtual printer.  This works great but when a single one
        of these printers runs out of paper, ALL of these queues
        quit printing.  How can this be?
ACT:
        Discussed problem with customer and believe that the problem
        does NOT stem from your filter but instead the fact
        that each of your queues has the same file=/dev/null in
        the /etc/qconfig file.  

        It is much easier to understand in terms of a physical
        lp device - only one job can go to one physical printer
        at a time.  However, /dev/null operates in the queueing
        system in the same manner.  When one queue prints to
        /dev/null - it is locked like /dev/lp\# would be and thus
        is the "printer" /dev/null becomes unavailable - nothing
        else can print to it.

        Suggested chaning file = /dev/null to something unique
        for each queue such as /dev/lpa , /dev/lpb, /dev/lpc, etc.
        where each of these is just an empty text file.  You
        could also go into /etc/qconfig and replace the
        file = /dev/null with file = FALSE.

        You tried the above suggestions and all is working fine
        now!



Support Line: One printer runs out of paper-all queues stop printing ITEM: AP6230L

Dated: November 1995 Category: N/A

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