____________________________________________________
                    OpenVMS AXP Version 1.5 Release Notes Addendum


                    Order Number: AV-PZ27A-TE


                    May 1993

                    This document describes features, changes, and
                    restrictions that apply to the OpenVMS AXP Version
                    1.5 operating system.







                    Revision/Update Information:  This is a new manual.

                    Software Version:             OpenVMS AXP Version 1.5






                    Digital Equipment Corporation
                    Maynard, Massachusetts

 






          ________________________________________________________________
          May 1993

          The information in this document is subject to change
          without notice and should not be construed as a commitment
          by Digital Equipment Corporation. Digital Equipment
          Corporation assumes no responsibility for any errors that
          may appear in this document.

          The software described in this document is furnished under
          a license and may be used or copied only in accordance with
          the terms of such license.

          No responsibility is assumed for the use or reliability
          of software on equipment that is not supplied by Digital
          Equipment Corporation or its affiliated companies.

          © Digital Equipment Corporation 1993.

          All Rights Reserved.

          The following are trademarks of Digital Equipment
          Corporation: Alpha AXP, AXP, CDA, DEC, DECmigrate, DECnet,
          DECthreads, DECwindows, Digital, HSC, InfoServer, LAT,
          OpenVMS, TURBOchannel, UETP, VAX, VAX COBOL, VAX DOCUMENT,
          VMS, VMScluster, the AXP logo, and the DIGITAL logo.

          The following are third-party trademarks:

          Adobe, Display PostScript, and PostScript are registered
          trademarks of Adobe Systems Incorporated.

          Motif, and OSF/1 are registered trademarks of the Open
          Software Foundation, Inc.

          X Window System is a common law trademark of MIT.

          All other trademarks and registered trademarks are the
          property of their respective holders.

                                                               ZK6315

          This document was prepared using VAX DOCUMENT, Version 2.1.

 














  _________________________________________________________________

                                                           Contents



  Preface...................................................      v

  1  OpenVMS AXP Version 1.5 Release Notes

        1.1   Console and PALcode Revisions Supported By
              OpenVMS AXP Version 1.5.......................    1-1
        1.2   AUTOGEN ......................................    1-3
        1.2.1     AUTOGEN Tuning Problem....................    1-3
        1.2.2     SETPARAMS Phase - Behavior Change.........    1-4
        1.3   BACKUP Command - /EXACT_ORDER Qualifier Not
              Supported ....................................    1-4
        1.4   DEC C RTL Known Problems......................    1-4
        1.5   DECmigrate....................................    1-5
        1.6   DECthreads (CMA)..............................    1-5
        1.7   New Support for DECwindows Motif Layered
              Product Customers.............................    1-5
        1.8   DEFTA TURBOchannel FDDI Adapter Supported.....    1-6
        1.9   Unique Device Unit Numbers Required -
              Restriction...................................    1-7
        1.10  Documentation Error - Default Linker Behavior
              Is /NATIVE_ONLY...............................    1-7
        1.11  F$FILE_ATTRIBUTES Lexical Function Returns
              Incorrect Value...............................    1-7
        1.12  Intense File System Activity Related to LEF
              Hangs.........................................    1-8
        1.13  Image Activator Length Comparison Problem.....    1-9
        1.14  InfoServer Notes..............................   1-10
        1.14.1    InfoServer System BOOT Command Change.....   1-10
        1.14.2    Accessing ISO 9660 CDs Served Through the
                  InfoServer................................   1-10
        1.14.3    InfoServer Installation - Change in
                  Service Name..............................   1-10
        1.15  Change in LAT Behavior........................   1-11

                                                                iii

 







          1.16  LIB$FIND_IMAGE_SYMBOL Routine.................   1-12
          1.17  LIBRARIAN Operation Failure...................   1-13
          1.18  MACRO-32 Compiler Problems....................   1-13
          1.19  Performance Degradation Due to Insufficient
                Swap File Space...............................   1-15
          1.20  PMAZB Adapter - Limited Support Available.....   1-16
          1.21  RZ24L 245MB SCSI Fixed-Disk Drive Supported...   1-16
          1.22  Standalone BACKUP from ESEnn Device Results in
                System Halt...................................   1-16
          1.23  System Disks Connected to HSC Devices ........   1-17
          1.24  System Management Utility (SYSMAN) Problem....   1-17
          1.25  UETP Test Package - FDDI Devices Not Supported
                ..............................................   1-17
          1.26  Upgrade Procedure - Rebooting After Phase 1
                ..............................................   1-18
          1.27  Translated VAX COBOL Programs Supported.......   1-18
          1.28  VOID Kits Included on OpenVMS AXP Version 1.5
                CD............................................   1-18
          1.28.1    Memory Exhaustion Problem on Clustered
                    Systems...................................   1-19
          1.28.2    PEDRIVER Update Kit.......................   1-19


    Tables

          1-1       Console and PALcode Revisions Supported by
                    Version 1.5 ..............................    1-2

          1-2       System Parameters.........................    1-9
















    iv

 












        _________________________________________________________________

                                                                  Preface



              This manual describes features and restrictions of the
              OpenVMS AXP Version 1.5 operating system. These notes
              contain information that supplements the OpenVMS AXP
              Version 1.5 Release Notes.

        Intended Audience

              This manual is intended for general users, system managers,
              developers, and programmers who use the operating system.
              It is especially useful for those who are about to install
              the operating system.

        Associated Information

              For a list of additional documents that are available in
              support of this version of OpenVMS AXP, refer to the CD-ROM
              booklet and the Overview of OpenVMS Documentation.

        Conventions

              In this manual, every use of OpenVMS AXP means the OpenVMS
              AXP operating system, every use of OpenVMS VAX means the
              OpenVMS VAX operating system, and every use of OpenVMS
              means both the OpenVMS AXP operating system and the OpenVMS
              VAX operating system.

              The following conventions are also used in this manual:

              V1.x             A margin note beneath each heading
                               indicates the OpenVMS AXP version in which
                               the note was first published. All notes
                               identified with the V1.0 margin note also
                               apply to OpenVMS AXP Version 1.5.

                                                                        v

 








          Ctrl/x           A sequence such as Ctrl/x indicates that
                           you must hold down the key labeled Ctrl
                           while you press another key or a pointing
                           device button.

          .                A vertical ellipsis indicates the omission
          .                of items from a code example or command
          .                format; the items are omitted because
                           they are not important to the topic being
                           discussed.

          [ ]              In format descriptions, brackets indicate
                           optional elements. You can choose one,
                           none, or all of the options. (Brackets
                           are not optional, however, in the syntax
                           of a directory name in an OpenVMS file
                           specification, or in the syntax of a
                           substring specification in an assignment
                           statement.)

          boldface text    Boldface text represents the introduction
                           of a new term or the name of an argument,
                           an attribute, or a reason.

                           Boldface text is also used to show user
                           input in Bookreader versions of the
                           manual.

          italic text      Italic text emphasizes important
                           information, indicates variables, and
                           indicates complete titles of manuals.
                           Italic text also represents information
                           that can vary in system messages (for
                           example, Internal error number), command
                           lines (for example, /PRODUCER=name), and
                           command parameters in text.

          UPPERCASE TEXT   Uppercase text indicates a command, the
                           name of a routine, the name of a file, or
                           the abbreviation for a system privilege.

          numbers          All numbers in text are assumed to
                           be decimal, unless otherwise noted.
                           Nondecimal radixes-binary, octal, or
                           hexadecimal-are explicitly indicated.

    vi

 










                                                                        1
        _________________________________________________________________

                                   OpenVMS AXP Version 1.5 Release Notes


              The following notes contain information that supplements
              the OpenVMS AXP Version 1.5 Release Notes.

        1.1 Console and PALcode Revisions Supported By OpenVMS AXP
            Version 1.5

        V1.5  The console and PALcode versions supported by the OpenVMS
              AXP Version 1.5 operating system differ from those that
              were supported by OpenVMS AXP Version 1.0.

              Table 1-1 shows the console and PALcode revisions that
              are supported by the OpenVMS AXP Version 1.5 operating
              system. The console and PALcode upgrades must be performed
              before you upgrade an OpenVMS AXP Version 1.0 system to
              Version 1.5. The supported console and PALcode versions are
              contained on the Alpha AXP Systems Firmware Update CD that
              is included in your OpenVMS AXP Version 1.5 distribution
              kit.

              Although the minimum revision levels required to boot
              OpenVMS AXP Version 1.5 have been left at the supported
              Version 1.0 revision levels, significant fixes have been
              included in the Version 1.5 supported levels. OpenVMS
              AXP Version 1.5 is not supported on console and PALcode
              revision levels lower than those shown in Table 1-1.











                                                                      1-1

 



    OpenVMS AXP Version 1.5 Release Notes
    1.1 Console and PALcode Revisions Supported By OpenVMS AXP Version 1.5


          Table 1-1 Console and PALcode Revisions Supported by
          __________Version_1.5______________________________________

                             Console          PALcode
          System_____________Version__________Version________________

          DEC 3000 Model     2.4              5.41
          300

          DEC 3000 Model     2.4              5.41
          400

          DEC 3000 Model     2.4              5.41
          500

          DEC 4000           3.0              5.41

          DEC 7000/10000     2.2 (for EV4     5.41
                             pass 2)
                             2.3 (for EV4
          ___________________pass_3)_________________________________

          The troubleshooting guidelines that follow contain
          information that can help you determine the proper action
          to take when minimum console and PALcode revision levels
          are not present on your system.

          Troubleshooting Guideline - During an Upgrade

          If a message similar to the following is displayed at the
          beginning of the OpenVMS AXP Version 1.5 upgrade procedure,
          it means that the PALcode and console must be upgraded:

          PALcode revision 5.18 is below required minimum of 5.25

          The upgrade procedure then aborts. At this point, you must
          upgrade the console and PALcode versions using the firmware
          CD included in your distribution kit. After you upgrade the
          console and PALcode, restart the upgrade procedure.

          Troubleshooting Guidelines - While Booting Version 1.5

          The following guidelines apply to messages that may be
          displayed while booting a Version 1.5 system:

          o  If a message similar to the following is displayed, it
             means you are attempting to boot an OpenVMS AXP Version
             1.5 system on hardware whose revision levels are below
             the versions shown in Table 1-1:

    1-2

 



                                   OpenVMS AXP Version 1.5 Release Notes
   1.1 Console and PALcode Revisions Supported By OpenVMS AXP Version 1.5


                 APB-F-PALREV, PALcode revision 4.33 is below required minimum of 5.25
                               PLEASE UPDATE YOUR PALcode
                               UNABLE TO CONTINUE

                 After the message is displayed, the boot procedure
                 aborts. Use the firmware CD included in your
                 distribution kit to upgrade the console and PALcode
                 versions. After upgrading the console and PALcode
                 versions, reboot your system.

              o  If a message similar to the following is displayed, it
                 means your console and PALcode revision levels equal or
                 exceed the minimum bootable versions but are still below
                 the supported versions listed in Table 1-1. Digital
                 does not support systems that contain console or PALcode
                 revisions not listed in Table 1-1.

                 APB-W-PALREV, PALcode revision 5.25 is below supported minimum of 5.41
                               PLEASE UPDATE YOUR PALcode

                 Although the system continues to boot, you should
                 use the firmware CD included in your distribution
                 kit to upgrade the console and PALcode versions. This
                 allows you to take advantage of improvements and fixes
                 contained in the latest versions.

        1.2 AUTOGEN

        V1.5  The following sections describe a problem and a change in
              behavior.

        1.2.1 AUTOGEN Tuning Problem

        V1.5  AUTOGEN may incorrectly set the system parameter PFCDEFAULT
              to 128 on satellite nodes in a cluster. This can increase
              the number and size of paging I/Os to the boot node.

              To prevent this problem, insert the following line in the
              SYS$SYSTEM:MODPARAMS.DAT file before you run AUTOGEN:

              PFCDEFAULT=64




                                                                      1-3

 



    OpenVMS AXP Version 1.5 Release Notes
    1.2 AUTOGEN


    1.2.2 SETPARAMS Phase - Behavior Change

    V1.5  The AUTOGEN SETPARAMS phase behaves differently on an
          OpenVMS AXP system than it does on an OpenVMS VAX system.

          On OpenVMS VAX, the AUTOGEN SETPARAMS phase resets all
          system parameters to their default values. AUTOGEN then
          modifies some or all of those values by using data gathered
          in feedback mode or by using user-supplied data contained
          in the MODPARAMS.DAT file. If no modification is made, the
          default value is used the next time the system boots.

          On OpenVMS AXP, the AUTOGEN SETPARAMS phase uses the values
          from the current system image; values are not reset to
          their defaults. Current values are used, except for those
          that are explicitly modified by AUTOGEN.

          For more information about how AUTOGEN uses default
          values, see the AUTOGEN Help topic EXECUTION-TYPE, INITIAL
          subtopic.

    1.3 BACKUP Command - /EXACT_ORDER Qualifier Not Supported

    V1.5  The OpenVMS AXP Version 1.5 Release Notes manual
          incorrectly states that the /EXACT_ORDER qualifier for
          the BACKUP command is available. The /EXACT_ORDER qualifier
          is unavailable in OpenVMS AXP Version 1.5.

    1.4 DEC C RTL Known Problems

    V1.5  The following problems exist in the DEC C RTL in OpenVMS
          AXP Version 1.5:

          o  The C RTL loses carriage-control information when it
             reads from mailboxes. As a result, information that
             is read from a mailbox has no line breaks or carriage
             returns; the original lines are concatenated.

          o  When an application sets the reentrancy mode to AST, the
             C RTL always enables asynchronous system traps (ASTs)
             during a file open operation. To make your application
             disable ASTs, place SYS$SETAST(0) calls after every
             file open call and after the first I/O operations to the
             stdin, stdout, and stderr functions (that is, when the
             C RTL performs a file open operation to initialize the
             stdio device). This problem does not occur in any other
             reentrancy mode.

    1-4

 



                                   OpenVMS AXP Version 1.5 Release Notes
                                                           1.5 DECmigrate


        1.5 DECmigrate

        V1.5  DECmigrate Version 1.1 software generates translated images
              that are executable on OpenVMS AXP Version 1.5 or later.
              This version of DECmigrate does not support OpenVMS AXP
              Version 1.0. Images translated by DECmigrate Version 1.0
              are executable on all versions of the OpenVMS AXP system.

        1.6 DECthreads (CMA)

        V1.5  A potential problem occurs between the DECthreads software
              and the DEC C RTL when a C program that calls LIB$FIND_
              IMAGE_SYMBOL dynamically activates DECthreads or another
              shareable image that depends on DECthreads. This problem
              may result in an access violation inside CMA$RTL in a call
              from DECC$SHR.

              To work around this problem, link the image that calls
              LIB$FIND_IMAGE_SYMBOL against CMA$RTL.

              Dynamically activating DECthreads or shareable images that
              depend on DECthreads does not work under all circumstances.
              Several software facilities contain code whose behavior
              is conditional upon the presence or absence of threads at
              the time that these facilities are initialized. If any of
              these facilities are in use by a program, threads cannot
              be safely brought into the process after execution begins
              because these facilities cannot respond to the change. An
              attempt to bring threads in at this stage typically causes
              the program to abort. Other unpredictable behavior, such as
              access violations, may result instead of program abortion.

        1.7 New Support for DECwindows Motif Layered Product Customers

        V1.5  With the release of OpenVMS AXP Version 1.5, the following
              features of the DECwindows Motif Version 1.1 layered
              product are now available:

              o  Bindings

                 Bindings (including Motif bindings) and header file
                 support for Ada and Pascal are now available.

              o  TCP/IP

                 In addition to DECnet and local transports, TCP/IP
                 is now available through UCX to allow OpenVMS AXP
                 clients to connect to other displays that use TCP/IP,

                                                                      1-5

 



    OpenVMS AXP Version 1.5 Release Notes
    1.7 New Support for DECwindows Motif Layered Product Customers


             including OpenVMS VAX and AXP workstations, DEC OSF/1
             workstations, third-party systems, and X terminals. Of
             course, OpenVMS AXP workstation displays can also accept
             connections from these clients (except for X terminals)
             via TCP/IP.

          o  Adobe Display PostScript server extension

             Display PostScript lets users display PostScript files
             with the CDA Viewer; programmers can now include Display
             PostScript commands in applications to rotate and scale
             fonts, display curves, and display graphics on alternate
             coordinate systems.

          o  Tailoring for DECwindows server files

             Users can now tailor DECwindows server files on or off
             their systems to manage disk space more effectively;
             additional tailoring support for DECwindows files will
             be available in a future release of the DECwindows Motif
             layered product.

          o  PEX (PHIGS extensions) and multibuffering extensions

             PEX and multibuffering extensions are now available
             in the DEC Open3D product to support three-dimensional
             drawing operations.

          o  Font server renderer

             The X11 R5 display server now includes a font server
             renderer that supports the use of font servers to access
             fonts. You can thus distribute font files on systems
             other than the system on which the display server is
             running.

          o  Scalable outline fonts

             Scalable outline fonts are now supported by the X11 R5
             display server. These fonts are distributed with the
             other DECwindows fonts.

    1.8 DEFTA TURBOchannel FDDI Adapter Supported

    V1.5  The DEFTA TURBOchannel FDDI adapter is fully supported on
          DEC 3000 systems running OpenVMS AXP Version 1.5.

    1-6

 



                                   OpenVMS AXP Version 1.5 Release Notes
                    1.9 Unique Device Unit Numbers Required - Restriction


        1.9 Unique Device Unit Numbers Required - Restriction

        V1.5  In a dual-architecture cluster, all disk device unit
              numbers within an allocation class must be unique. For
              example, suppose an existing disk within the cluster is
              named $5$DUA10. When you add another disk device to the
              same allocation class (even if it is on another disk
              controller or another device type), the new disk device
              must be given a unit number other than 10.

        1.10 Documentation Error - Default Linker Behavior Is
             /NATIVE_ONLY

        V1.5  Migrating to an OpenVMS AXP System: Recompiling and
              Relinking Applications, the OpenVMS Linker Utility Manual,
              and the description of the BAD_LINK message in the Help
              Message database in the OpenVMS System Messages and
              Recovery Procedures Reference Manual mistakenly describe
              /NONATIVE_ONLY to be the default behavior of the linker.

              The /NATIVE_ONLY qualifier to the LINK command directs
              the linker not to pass along the procedure signature block
              (PSB) information, created by the compilers, in the image
              it is creating. This is the default behavior of the linker.

              PSB information is necessary if the image you are creating
              in the link operation calls translated VAX images (but
              not if translated VAX images call it). To include PSB
              information in the image, you must compile the original
              program sources with the appropriate compiler switch (as
              indicated by the compiler documentation) and specify the
              /NONATIVE qualifier when linking the program's object
              modules. The image activator uses the PSB information in
              the image to create jacket routines, which allow native AXP
              images to work with translated VAX images.

        1.11 F$FILE_ATTRIBUTES Lexical Function Returns Incorrect Value

        V1.5  When you use the STORED_SEMANTICS item code with the
              F$FILE_ATTRIBUTES lexical function, an incorrect ASCII
              string is returned. Digital expects to fix this problem in
              a future release of the OpenVMS AXP operating system.



                                                                      1-7

 



    OpenVMS AXP Version 1.5 Release Notes
    1.12 Intense File System Activity Related to LEF Hangs


    1.12 Intense File System Activity Related to LEF Hangs

    V1.5  VMScluster systems may hang when all the following
          conditions are met:

          o  File system activity is extremely high (open, close,
             extend, truncate, and delete functions).

          o  All of the file system activity occurs on one volume,
             and the volume is full.

          o  All of this activity occurs across several VMScluster
             nodes.

          o  At least one VMScluster node has small XQP buffer
             caches.

          This problem is frequently seen when heavily loaded UETP
          testing is conducted on recently configured systems.

          To work around this problem, increase the setting of the
          system parameters listed in Table 1-2. The variable n
          represents the maximum number of processes expected in a
          system.





















    1-8

 



                                   OpenVMS AXP Version 1.5 Release Notes
                   1.12 Intense File System Activity Related to LEF Hangs


              Table_1-2_System_Parameters________________________________

              System_Parameter____Value__________________________________

              ACP_MAPCAHCE        Greater than n

              ACP_DIRCACHE        Greater than (nx2)

              ACP_HDRCACHE        Greater than (nx3)

              ACP_DINDXCACHE______Greater_than_n_________________________

              Digital expects to address this problem in a future release
              of the OpenVMS operating system.

        1.13 Image Activator Length Comparison Problem

        V1.5  In rare circumstances, you can build a correct image with
              the OpenVMS linker and receive the following error message
              when you try to run the image:

              IMGACT-F-BAD_FIXUPVEC, the fixup vector contains inconsistent data

              The message occurs because a length comparison in the image
              activator is off by 1 byte. The failure happens when the
              necessary fixup information exactly fills the area of the
              image allocated for that purpose.

              To work around this problem, take any actions that slightly
              change the amount of fixup information that is generated.
              For instance, in the linker options file that is used to
              generate the image, you can add a reference to a shareable
              image that is not otherwise shown in the linker map, as
              shown in the following example:

              SYS$SHARE:LIBOTS.EXE/SHARE

              Make sure that the shareable image you specify is present
              on all machines that will run the program. Therefore,
              choose an image that is part of the operating system
              distribution kit or one that you provide yourself. You
              can reduce overhead by choosing a very simple image that
              does not refer to other images.

              Digital expects to fix this problem in a future release.

                                                                      1-9

 



    OpenVMS AXP Version 1.5 Release Notes
    1.14 InfoServer Notes


    1.14 InfoServer Notes

    V1.5  The following notes pertain to the InfoServer.

    1.14.1 InfoServer System BOOT Command Change

    V1.5  If you use the InfoServer system to install the OpenVMS AXP
          Version 1.5 operating system on a DEC 4000 system, add the
          following item to the BOOT command:

          -START 0

          The following example shows a complete BOOT command:

          >>> BOOT -FL 0,0 -FI APB_015 -START 0 lan-device-name

    1.14.2 Accessing ISO 9660 CDs Served Through the InfoServer

    V1.5  The OpenVMS AXP InfoServer client software can access
          InfoServer services in the ODS_2 name space only. However,
          when an ISO 9660 CD is placed in an InfoServer device, a
          service is automatically created for only the ISO_9660 name
          space.

          To permit access to an ISO 9660 CD by the client software,
          you must create an ODS_2 service for the CD. See the
          InfoServer System Operations Guide for complete information
          about how to create the ODS_2 service.

    1.14.3 InfoServer Installation - Change in Service Name

    V1.5  If you are using the InfoServer to install OpenVMS AXP
          Version 1.5, the default InfoServer service name displayed
          by the installation procedure is incorrect. The system
          prompts you to enter the InfoServer service name and
          displays the default name OPENVMSALPHA015. Do not use the
          default name.

          Instead, enter OPENVMSAXP15 for the InfoServer service
          name, as shown in the sample display in the OpenVMS AXP
          Version 1.5 Upgrade and Installation Manual.




    1-10

 



                                   OpenVMS AXP Version 1.5 Release Notes
                                              1.15 Change in LAT Behavior


        1.15 Change in LAT Behavior

        V1.5  After you enter the LATCP CREATE LINK /DECNET command, the
              following message may be displayed:

              %SYSTEM-F-BADPARAM, bad parameter value

              This may indicate that the SCSSYSTEMID system parameter
              is set to an illegal value. Use the following formula when
              setting this parameter:

              (1024 * a) + n

              In the formula, a is the DECnet area, and n is the DECnet
              node number.

              When you use the /DECNET qualifier with the LATCP CREATE
              LINK command, be sure that the value of the SCSSYSTEMID
              system parameter is within the range of 1025 to 65535,
              as determined by the formula above. The value for this
              parameter should match the results obtained by using the
              formula. If the value is outside the range of 1025 to
              65535, the LAT protocol is unable to start.

              When you use the /NODECNET qualifier, the LAN device driver
              code decides what address to use. The decision is based on
              the following criteria:

              o  If SCSSYSTEMID is set to 0 but DECnet is already running
                 on an Ethernet controller, the LAN device code allows
                 the LAT software to use the same address as DECnet (AA-
                 00-04-00-xx-xx).

              o  If SCSSYSTEMID is set to 0 and DECnet is not running,
                 the 08-00-2B-xx-xx-xx address is used.

              o  If the setting for SCSSYSTEMID is the same as the DECnet
                 node number and DECnet is not running, the LAN device
                 code forces LAT to use the AA-00-04-00-xx-xx address.

              Restriction

              If DECnet is configured on the system (or if the system
              is part of a cluster), SCSSYSTEMID may contain a nonzero
              value. Normally this is not a problem unless the system has
              two or more LAN controllers connected to the same logical
              LAN.

                                                                     1-11

 



    OpenVMS AXP Version 1.5 Release Notes
    1.15 Change in LAT Behavior


          For example, if your system has an FDDI controller and
          an Ethernet controller, your site may be configured so
          that the FDDI ring attached to the FDDI controller and
          the Ethernet segment attached to the Ethernet controller
          are bridged by a 10/100 LAN bridge (FDDI-to-Ethernet). In
          this configuration, it is impossible to run LAT over both
          controllers.

          In such a configuration, you must run LAT and DECnet over
          the same controller if SCSSYSTEMID is not 0. If you fail
          to do so, DECnet starts first, which in turn causes the
          LAT startup on the other controller to fail. This failure
          occurs because LAT startup tries to use the AA-00-04-00-
          xx-xx address (the DECnet LAN address); however, because
          DECnet is already using this address on another controller,
          the data link layer prevents the LAT startup from using
          that address. (In a single logical LAN, all data link
          addresses must be unique. Because both controllers try
          to use the same address, it is no longer unique.)

          Using the following command to create the LAT link also
          fails because the LAN driver tries to use the address based
          on SCSSYSTEMID:

          LATCP> CREATE LINK LAT$LINK_2 /NODECNET

          If SCSSYSTEMID is set to 0, configuring LAT and DECnet on
          different controllers is possible. However, in a cluster
          environment, SCSSYSTEMID cannot be set to 0.

    1.16 LIB$FIND_IMAGE_SYMBOL Routine

    V1.5  The LIB$FIND_IMAGE_SYMBOL routine sometimes uses an
          incorrect value as the base address of an image's symbol
          vector, resulting in an access violation. This occurs when
          both of the following conditions are met:

          o  The image being referenced by LIB$FIND_IMAGE_SYMBOL was
             installed using the /RESIDENT qualifier.

          o  The image being referenced by LIB$FIND_IMAGE_SYMBOL was
             already activated, and the initial activation of the
             image was not performed by LIB$FIND_IMAGE_SYMBOL. (That
             is, activation was done by direct call to SYS$IMGACT.)

    1-12

 



                                   OpenVMS AXP Version 1.5 Release Notes
                                       1.16 LIB$FIND_IMAGE_SYMBOL Routine


              Use either of the following methods to work around this
              problem:

              o  Reinstall the image being referenced, but do not specify
                 the /RESIDENT qualifier.

              o  Activate the uninstalled copy of the image, not the
                 installed copy. To do this, define a logical name for
                 the image being referenced, as shown in the following
                 example for the DPML$SHR image:

                 $ DEFINE DPML$SHR SYS$LIBRARY:DPML$SHR.EXE;

                 Note that you must include a semicolon after the file
                 type in the file specification.

        1.17 LIBRARIAN Operation Failure

        V1.5  The OpenVMS AXP LIBRARIAN sometimes does not inform you
              of errors during compression, data reduction, or data
              expansion operations. This problem occurs if the account
              or process in which the LIBRARIAN is running has a low
              PGFLQUOTA process quota. Operation failure is not readily
              apparent because the $PUTMSG system service always returns
              a status of SS$_NORMAL, even when the system service fails.
              However, when a failure occurs, the LIBRARIAN returns a
              status other than success.

              To work around this problem, run the compression, data
              reduction, or data expansion operation in an account with
              a PGFLQUOTA process quota greater than 23000. In addition,
              ensure that your command procedures check the return status
              from the LIBRARY command.

        1.18 MACRO-32 Compiler Problems

        V1.5  The following problems exist in the MACRO-32 Compiler.
              Their occurrence, although extremely rare, results in
              incorrect code generation.

              o  The first problem concerns the use of indexed addressing
                 mode as the base address in variable bit-field
                 instructions. If the compiler's optimizer determines
                 that it can compute the base address once and reuse

                                                                     1-13

 



    OpenVMS AXP Version 1.5 Release Notes
    1.18 MACRO-32 Compiler Problems


             it in a nearby bit-field instruction that uses the
             identical operand, it may use the wrong indexing mode.

             In the following example, the compiler combines the
             two address references to (R5)[R1] but erroneously uses
             longword context rather than byte context for the index
             operation, thus accessing the wrong memory location:

             BBS     #2, (R5)[R1], 10$
             INSV    #1, #3, #8, (R5)[R1]

             Note that this problem occurs only if both instructions
             are variable bit-field instructions. Eliminate this
             error by specifying /OPT=NOADDR when you compile the
             module that contains this code.

          o  The second problem concerns read references from
             identical memory operands that are separated by a
             write reference to another memory location. The write
             reference should prevent the compiler from attempting
             to combine the read references and to cache the value
             in a register. The write reference may refer to the same
             location, or to an overlapping location, in a way that
             cannot be detected by the compiler. For example, suppose
             that at run time, R4 and R5 have the same value in the
             following code:

             MOVL    4(R4), R8
             MOVW    #1, 6(R5)
             PUSHL   4(R4)

             The PUSHL instruction may use the same value fetched for
             the MOVL instruction, even though MOVW changed the value
             in memory.

             The problem of optimizing two read operations across a
             write operation occurs very infrequently and is unlikely
             to cause a run-time error. If this problem causes a run-
             time error, eliminate the error by specifying /OPT=NOREF
             when compiling the module that contains this code.





    1-14

 



                                   OpenVMS AXP Version 1.5 Release Notes
         1.19 Performance Degradation Due to Insufficient Swap File Space


        1.19 Performance Degradation Due to Insufficient Swap File Space

        V1.5  Performance may degrade on systems using large working sets
              if the swap file space is insufficient.

              Configurations with large process working sets that run
              under heavy load conditions must have adequate swap file
              space. Processes can be swapped out with a working set size
              up to the value of WSQUOTA. The I/O that is issued to swap
              out the process can be as large as the setting for WSQUOTA
              and requires this much space in the swap file. (WSQUOTA is
              a process parameter that you can adjust using the Authorize
              utility.)

              To provide adequate swap file space, periodically run
              AUTOGEN with the FEEDBACK option. When running AUTOGEN,
              make sure that:

              o  The system has been up long enough to have run a typical
                 load (at least 24 hours).

              o  There is no hard-coded SWAPFILE value in the
                 SYS$SYSTEM:MODPARAMS.DAT file. (A hard-coded SWAPFILE
                 value prevents AUTOGEN from sizing the swap files
                 correctly.)

              AUTOGEN resizes swap files provided there is adequate
              space on the volumes containing the swap files. If there
              is insufficient space, AUTOGEN recommends swap file sizes.
              Use swap file sizes at least as large as those recommended
              by AUTOGEN. If the swap file sizes need to be increased
              and insufficient free space exists on the volume containing
              the swap files, perform one of the following steps after
              AUTOGEN finishes:

              o  Free up space on the volume, and increase the swap file
                 size to at least the value recommended by AUTOGEN.

              o  Move the swap files to a volume with sufficient space.
                 Make sure that the swap files are at least as large as
                 those recommended by AUTOGEN.

              o  Add another swap file. The total space in all swap files
                 must be at least as large as the total size recommended
                 by AUTOGEN.

                                                                     1-15

 



    OpenVMS AXP Version 1.5 Release Notes
    1.20 PMAZB Adapter - Limited Support Available


    1.20 PMAZB Adapter - Limited Support Available

    V1.5  The OpenVMS AXP Version 1.5 Release Notes manual and the
          OpenVMS AXP Version 1.5 Upgrade and Installation Manual
          state that the TURBOchannel PMAZB adapter is supported in
          OpenVMS AXP Version 1.5.

          The PMAZB adapter is supported in OpenVMS AXP Version 1.5
          for data devices only. No support is provided for OpenVMS
          AXP Version 1.5 system disks that are connected to PMAZB
          adapters.

    1.21 RZ24L 245MB SCSI Fixed-Disk Drive Supported

    V1.5  The RZ24L 245MB SCSI fixed-disk drive is fully supported on
          DEC 3000 Model 300 and Model 300L systems running OpenVMS
          AXP Version 1.5.

    1.22 Standalone BACKUP from ESEnn Device Results in System Halt

    V1.5  Booting standalone BACKUP from an ESE52, ESE56, or ESE58
          device sometimes fails with a system halt, especially
          when there are a large number of devices configured on
          the system. BACKUP issues a message indicating "Kernel
          stack not valid."

          To work around this problem, boot standalone BACKUP
          conversationally, and set KSTACKPAGES to 16, as shown in
          the following example:

          >>>B -FL E,1 DUA20
             .
             .
             .
          SYSBOOT> SET KSTACKPAGES 16
          SYSBOOT> CONTINUE
             .
             .
             .
          $





    1-16

 



                                   OpenVMS AXP Version 1.5 Release Notes
                              1.23 System Disks Connected to HSC Devices


        1.23 System Disks Connected to HSC Devices

        V1.5  Digital recommends that you use high-priority HSC
              requestors when connecting system disks to HSC devices.
              Refer to the HSC User Guide for information about requestor
              priorities.

        1.24 System Management Utility (SYSMAN) Problem

        V1.5  When the system management environment is set clusterwide
              with the /CLUSTER qualifier, entering the following SYSMAN
              command sometimes causes a hang:

              SYSMAN> DO SHOW DEVICE device-name

              This hang is caused by a communication failure between the
              process spawned by the DO command and the remote SMISERVER
              process on one of the AXP nodes in the cluster.

              To work around this problem, press Ctrl/C to return to
              the SYSMAN> prompt. Delete the remote SMISERVER process
              on the node that did not respond. You can then restart the
              SMISERVER process with the following command:

              $ @SYS$SYSTEM:STARTUP SMISERVER

              If the DO SHOW DEVICE device-name command hangs on the
              next attempt, press Ctrl/C to return to the SYSMAN>
              prompt. Delete and then restart the SMISERVER process on
              the unresponsive node. Log in to the node that stopped
              responding, and enter the DO SHOW DEVICE device-name
              command.

              Digital expects to fix this problem in a future release of
              the OpenVMS AXP operating system.

        1.25 UETP Test Package - FDDI Devices Not Supported

        V1.5  The UETP test package does not support the following FDDI
              devices:

                 DEFZA
                 DEFTA
                 DEFAA

                                                                     1-17

 



    OpenVMS AXP Version 1.5 Release Notes
    1.26 Upgrade Procedure - Rebooting After Phase 1


    1.26 Upgrade Procedure - Rebooting After Phase 1

    V1.5  If you are upgrading your system to Version 1.5 of the
          OpenVMS AXP operating system, be sure you enter the correct
          boot command before beginning Phase 2 of the upgrade
          procedure, as described in this section.

          After the upgrade procedure finishes restoring and purging
          files during Phase 1, the system shuts down. The OpenVMS
          AXP Version 1.5 Upgrade and Installation Manual incorrectly
          states that, at this point in the procedure, you should
          reboot the partially upgraded OpenVMS AXP Version 1.5
          system from the original system root (SYS0).

          Instead, you must reboot from the [SYSF] directory by
          entering the boot command in the following format, where
          ddcu is the device name for your system disk. (You can omit
          the system disk device name if your system supports only
          one device.)

          >>> BOOT -FLAGS F,0 ddcu

          If you encounter a problem booting, perform a
          conversational boot by entering the command in the
          following format instead:

          >>> BOOT -FLAGS F,1 ddcu

    1.27 Translated VAX COBOL Programs Supported

    V1.5  The OpenVMS AXP Version 1.5 operating system supports the
          execution of translated VAX COBOL programs compiled with
          the VAX COBOL Version 5.0 compiler (or earlier compilers).

          Programs compiled with the VAX COBOL Version 5.1 compiler
          are not supported by the OpenVMS AXP Version 1.5 operating
          system.

    1.28 VOID Kits Included on OpenVMS AXP Version 1.5 CD

    V1.5  The following sections describe two updates that must
          be applied to OpenVMS VAX Version V5.5-2 systems. Both
          update save sets are located in the [VAX_KIT] directory
          on your OpenVMS AXP Version 1.5 CD. You must reboot your
          VAX systems in order to apply these fixes. These update
          kits are required for AXP and VAX system compatibility in a
          dual-architecture VMScluster environment.

    1-18

 



                                   OpenVMS AXP Version 1.5 Release Notes
                    1.28 VOID Kits Included on OpenVMS AXP Version 1.5 CD


        1.28.1 Memory Exhaustion Problem on Clustered Systems

        V1.5  Memory exhaustion occurs on VMScluster systems when a
              SYSAP that exists on a VAX machine is not running on the
              AXP nodes. To address this problem, an update kit named
              VAXSYSL09_U2055 is located in the [VAX_KIT] directory
              on your OpenVMS AXP Version 1.5 CD. A new SYS$LOADABLE_
              IMAGES:SYS$SCS.EXE image is supplied with the kit.

              Installation Instructions

              Use the VMSINSTAL utility to install this update kit. Log
              in to the SYSTEM account, and enter the following command:

              $ @SYS$UPDATE:VMSINSTAL VAXSYSL09_U2055 [save-set location]

              The save-set location can be a tape drive or a disk
              directory that contains the kit save set.

        1.28.2 PEDRIVER Update Kit

        V1.5  The PEDRIVER update kit addresses the following problems:

              o  A problem that manifests itself as anything from slow
                 performance to broken virtual circuits (which may result
                 in VAXport crashes).

              o  The XQDRIVER (for the DELQA and the DEQTA devices) does
                 not report the correct number of receive buffers to
                 PEDRIVER. (XQDRIVER is required for proper operation of
                 PEDRIVER.)

              The update kit, named VAXLAVC02_U2055, is located in the
              [VAX_KIT] directory on your OpenVMS AXP Version 1.5 CD.

              The following files were patched or replaced:

              o  [SYS$LDR]PEDRIVER.EXE (new image)

              o  [SYS$LDR]XQDRIVER.EXE (new image)

              o  [SYSEXE]SDA.EXE (new image)

              o  [SYSEXE]SCSDEF.STB (new file)

              o  [SYSEXE]PEDRIVER.STB (new file)

              o  [SYSLIB]LIB.MLB (replaces $PEMCOMPDEF and $PEMCLSTDEF
                 macros)

                                                                     1-19

 



    OpenVMS AXP Version 1.5 Release Notes
    1.28 VOID Kits Included on OpenVMS AXP Version 1.5 CD


          o  [SYSHLP.EXAMPLES]LAVC$FAILURE_ANALYSIS.MAR (new file)

             ________________________ Note ________________________

             Various internal structures changed as a result of the
             fixes to PEDRIVER. The System Dump Analyzer utility
             (SDA) and the SCS and PEDRIVER symbol tables are
             included in this kit to allow proper SDA operation.
             This also necessitated a change in [SYSLIB]LIB.MLB.

             ______________________________________________________

          Installation Instructions

          Use the VMSINSTAL utility to install this update kit. Log
          in to the SYSTEM account, and enter the following command:

          $ @SYS$UPDATE:VMSINSTAL VAXLAVC02_U2055 [save-set location]



























    1-20