Dear SCO Customer,

Support Level Supplement (SLS) ptf7438b, the UnixWare 7 Network Printing 
Supplement, addresses the following known problems encountered with 
printing commands under UnixWare 7.

SLS ptf7438a addressed the following problems:

1. Spooling a job using the lp command to a remote bsd printer 
   can return this message:

        UX:lp: ERROR: No space to allocate temp files.
        UX:lp: TO FIX: Clean up disk, or try again later.

2. Under heavy load, lpsched can core dump (lpNet remains). This problem 
   is commonly seen if "lpstat" is run many times to retrieve the current
   printjob status from multiple remote bsd printers with jobs outstanding, 
   and where some of the printers cannot be accessed, possibly due to being 
   offline or in the process of printing.

3. 'lpsched' can core dump when executing the lp command to print many files 
   with very long filenames.

SLS ptf7438b additionally fixes these problems:

4. The lpsched binary provided with SLS ptf7438a failed with dynamic 
   linker error - setegid() when trying to print a job on UnixWare 7.0.0 
   and 7.0.1.

5. Occasionally, 'lpsched' stops printing the remote printer requests. 
   The only way to restart it is to run 'lpshut' and then restart 'lpsched'.


Contents
--------

        /usr/lib/lp/lpNet
        /usr/lib/lp/lpsched


Software Notes and Recommendations
----------------------------------

SLS ptf7438b should only be installed on:

        UnixWare 7 Release 7.0.0, 7.0.1, 7.1.0, 7.1.1

Note: SLS ptf7438b will only install if the Network Support Utilities (nsu)
      package has also been installed.


Installation Instructions
-------------------------

1. lpsched should not be running during the installation of this SLS.
   Prior to installation, stop printing services using this command:

        /usr/lib/lpshut

   Once SLS ptf7438b has been installed, printing can be restarted using 
   this command:

        /usr/lib/lpsched

2. Download the ptf7438b.Z file to the /tmp directory on your machine.

3. As root, uncompress the file and add the SLS package to your system
   using these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf7438b.Z
        # pkgadd -d /tmp/ptf7438b
        # rm /tmp/ptf7438b

Alternatively, this SLS package may be installed in quiet mode,
that is, without displaying the release notes and asking for
confirmation.  To do this, use these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf7438b.Z
        # pkgadd -qd /tmp/ptf7438b all
        # rm /tmp/ptf7438b

4. There is no need to reboot the system after installing this SLS package.

The release notes displayed prior to installation can be found in:

        /var/sadm/pkg/ptf7438/install/ptf7438.txt


Removal Instructions
--------------------

1. As root, remove the SLS package using these commands:

        $ su
        Password: <type your root password>
        # pkgrm ptf7438

2. There is no need to reboot the system after removing this SLS package.


If you have questions regarding this SLS, or the product on which 
it is installed, please contact your software supplier.