ECO NUMBER:     ALPMTAA02_062
             PRODUCT:        OpenVMS Alpha OPERATING SYSTEM 6.2
             UPDATE PRODUCT: OpenVMS Alpha OPERATING SYSTEM 6.2




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1  KIT NAME:

     ALPMTAA02_062


2  KITS SUPERSEDED BY THIS KIT:

     ALPMTAA01_062


3  KIT DEPENDENCIES:

     3.1  The  following  remedial  kit(s)  must  be  installed   BEFORE
          installation of this, or any required kit:

     None.


     3.2  In order to receive all the corrections listed  in  this  kit,
          the following remedial kits should also be installed:

     ALPSYSA02_062
     ALPDISM02_062
     ALPINIT01_062
     ALPMOUN04_062
     ALPMTAA02_062


4  KIT DESCRIPTION:

     4.1  Version(s) of OpenVMS to which this kit may be applied:

     OpenVMS Alpha V6.2, V6.2-1H1, V6.2-1H2, V6.2-1H3


     4.2  Files patched or replaced:


      o  [SYSEXE]MTAAACP.EXE (new image)



5  PROBLEMS ADDRESSED IN ALPMTAA02_062 KIT


      o  A possible system crash occurs during Host Based  RAID  Unbinds
         with  MME code enabled.  A mailbox read synchronization problem
         causes the crash.

         This problem only occurs when a host-based RAID UNBIND  command
         is done while an MME-based application is running.

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                                                       23 October 1998


         This problem may occur in several different code areas  of  the
         operating  system.  In order to eliminate all instances of this
         problem, the following remedial kits  (or  their  supersedants)
         will also need to be installed:

          o  ALPSYSA02_062

          o  ALPDISM02_062

          o  ALPINIT01_062

          o  ALPMOUN04_062

          o  ALPMTAA02_062




6  PROBLEMS ADDRESSED IN ALPMTAA01_062 KIT


      o  The system crashes with NOBVPVCB.

      o  The system crashes with  an  XQPERR  while  dismounting  a  MAD
         drive.



7  PROBLEMS ADDRESSED IN AXPMTAA01_061 KIT


      o  If a tape is initialized with a non-blank  accessibility  field
         and  then  mounted  using  /OVERRIDE=(ACCESSIBILITY),  the tape
         mounts but cannot be read or written to.  The command format to
         initialize the tape would be similar to:

             INIT/LABEL=VOLUME_ACCESSIBILITY="+" tape: LABEL


         In addition, the following OPCOM messages are generated and the
         tape volume is automatically unloaded after an attempt to WRITE
         or READ the tape volume:

         %%%%%%%%%%% OPCOM 12-DEC-1994 12:57:23.53  %%%%%%%%%%%  Message
         from  user  USERXX  on  NODEXX non-blank accessibility field in
         volume labels on  SYS$DEVICE:   %%%%%%%%%%%  OPCOM  12-DEC-1994
         12:57:23.54 %%%%%%%%%%%

      o  If a user tried to kill the MTAAACP  process  or  process  that
         emitted the QIO, MTAAACP would go into RWAST state and hang.


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                                                       23 October 1998


8  KIT INSTALLATION RATING:

     The following kit  installation  rating,  based  upon  current  CLD
     information,  is  provided  to  serve as a guide to which customers
     should apply this remedial kit.  (Reference attached Disclaimer  of
     Warranty and Limitation of Liability Statement)

     INSTALLATION RATING:

       INSTALL_3 : To  be  installed  by  customers  experiencing  the  problems
           corrected.



9  INSTALLATION INSTRUCTIONS:

     Install this kit with the VMSINSTAL utility  by  logging  into  the
     SYSTEM account, and typing the following at the DCL prompt:

         @SYS$UPDATE:VMSINSTAL ALPMTAA02_062 [location of the saveset]

     The saveset location may be a tape drive, or a disk directory  that
     contains the kit saveset.

     No reboot is necessary after successful installation of the kit.


     Copyright  (c)  Compaq  Computer  Corporation,  1998   All   Rights
     Reserved.   Unpublished rights reserved under the copyright laws of
     the United States.

     The software contained on this media is proprietary to and embodies
     the   confidential   technology  of  Compaq  Computer  Corporation.
     Possession, use, or dissemination of  the  software  and  media  is
     authorized  only  pursuant  to  a valid written license from Compaq
     Computer Corporation.

     DISCLAIMER OF WARRANTY AND LIMITATION OF LIABILITY

     THIS PATCH IS PROVIDED AS IS, WITHOUT WARRANTY OF  ANY  KIND.   ALL
     EXPRESS  OR  IMPLIED  CONDITIONS,  REPRESENTATIONS  AND WARRANTIES,
     INCLUDING ANY IMPLIED  WARRANTY  OF  MERCHANTABILITY,  FITNESS  FOR
     PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED TO THE
     EXTENT PERMITTED BY APPLICABLE LAW.  IN NO  EVENT  WILL  COMPAQ  BE
     LIABLE  FOR  ANY  LOST REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT,
     CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER  CAUSED  AND
     REGARDLESS  OF  THE  THEORY OF LIABILITY, WITH RESPECT TO ANY PATCH
     MADE AVAILABLE HERE OR TO THE USE OF SUCH PATCH.