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<pre>
<center><b><font color=660066>
OpenVMS VMS721_RMS-V0200 Alpha V7.2-1 RMS ECO Summary
</font></b></center><p>
TITLE: OpenVMS VMS721_RMS-V0200 Alpha V7.2-1 RMS ECO Summary
 
New Kit Date     :  28-JUN-2001
Modification Date:  Not Applicable
Modification Type:  Updated Kit  Supersedes VMS721_RMS-V0100

NOTE:  An OpenVMS saveset or PCSI installation file is stored
       on the Internet in a self-expanding compressed file.
 
       For OpenVMS savesets, the name of the compressed saveset
       file will be kit_name.a-dcx_vaxexe for OpenVMS VAX or
       kit_name.a-dcx_axpexe for OpenVMS Alpha. Once the OpenVMS
       saveset is copied to your system, expand the compressed
       saveset by typing RUN kitname.dcx_vaxexe or kitname.dcx_alpexe.
 
       For PCSI files, once the PCSI file is copied to your system,
       rename the PCSI file to kitname-dcx_axpexe.pcsi, then it can
       be expanded by typing RUN kitname-dcx_axpexe.pcsi.  The resultant
       file will be the PCSI installation file which can be used to install
       the ECO.
 

 

Copyright (c) Compaq Computer Corporation 2001.  All rights reserved.

OP/SYS:     OpenVMS Alpha

COMPONENT:  RMS

SOURCE:     Compaq Computer Corporation

ECO INFORMATION:

     ECO Kit Name:  VMS721_RMS-V0200
                    DEC-AXPVMS-VMS721_RMS-V0200--4.PCSI
     ECO Kits Superseded by This ECO Kit:  VMS721_RMS-V0100
     ECO Kit Approximate Size:  3056 Blocks
     Kit Applies To:  OpenVMS Alpha V7.2-1
     System/Cluster Reboot Necessary:  Yes
     Rolling Re-boot Supported:  Yes
     Installation Rating:  INSTALL_1
                            1 - To be installed on all systems running
                                the listed version(s) of OpenVMS.
     
     Kit Dependencies:

       The following remedial kit(s) must be installed BEFORE
       installation of this kit:

         VMS721_UPDATE-V0300
         VMS721_PCSI-V0100

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

         VMS721_CLIUTL-V0100


ECO KIT SUMMARY:

An ECO kit exists for RMS on OpenVMS Alpha V7.2-1.  This kit addresses the 
following problems: 

PROBLEMS ADDRESSED IN VMS721_RMS-V0200 KIT

  o  Fix to prevent a non-fatal SSRVEXCEPT bugcheck when a wildcard
     network copy completes.

     Attempts to perform wild card file copy operations across  the
     network  may  fail  with  a non-fatal SSRVEXCEPT bugcheck upon
     completion when a  third  party  event  notification  software
     package  is  installed.   Stale information contained within a
     recycled DAP message buffer could cause an invalid path to  be
     executed  during  the  implicit  $DISPLAY of a file during RMS
     rundown.

        Images Affected:  [SYS$LDR]RMS.EXE


  o  Fix for remote file transfer performance  degradation  if  UPI
     enabled.

     As a side-effect of a DAP/FAL change made to the OpenVMS Alpha
     Version  7.2  family,  the  SQO  (sequential  only) option was
     inappropriately disabled in a record stream when the UPI (user
     provided  interlock)  option  was  enabled if RMS detected any
     form  of  write  sharing.   This  resulted  in  reducing   the
     performance  of a remote file transfer that had the UPI option
     enabled  due   to   the   overhead   of   sending   the   file
     record-by-record  rather  than  using the more efficient block
     mode transfer supported by the SQO option.

     This problem is fixed in OpenVMS Alpha V7.3.

        Images Affected:  [SYS$LDR]RMS.EXE

  o  Fix to prevent an RMS$_IOP error when more  than  16383  files
     are accessed.

     An image which issues more than 16383 $OPEN calls or  $CONNECT
     calls  may  receive an RMS$_IOP (Invalid Operation) error on a
     subsequent RMS call.  The Internal File and Stream  Identifier
     (IFI/ISI)  values  are  limited  to  14  bits.   Prior to this
     change, RMS failed to enforce  this  limit  resulting  in  the
     inadvertent  setting  of  some  extraneous bits when more than
     16383 files were opened or streams connected by a process.

     RMS has been modified to return a RMS$_DME  error  status  and
     not  continue  when  this  limit  is  exceeded for an $OPEN or
     $CONNECT.

     This problem is fixed in OpenVMS Alpha V7.3.

        Images Affected:  [SYS$LDR]RMS.EXE


  o  Fix to prevent a hang on  EFN  29  with  missing  upcall  from
     threaded application.

     A user application that is threaded may  have  a  thread  hang
     waiting  on  event  flag  29.  The IOSB of the thread has been
     filled in, but the thread continues to be stalled.   This  fix
     ensures  that  an  upcall  is  always  made  when RMS activity
     completes.

     This problem is fixed in OpenVMS Alpha V7.3.

        Images Affected:  [SYS$LDR]RMS.EXE


  o  RMS support for new qualifier /SHARE added to SET FILE,  which
     is dependent on the VMS721_CLIUTL-V0100 kit being installed.

     The /SHARE qualifier allows you to enable  or  disable  global
     buffers  or  statistics  on a file currently being accessed by
     other users.  Only new accessors of the file will acquire  the
     new   settings.    This   qualifier  requires  SYSPRV  (system
     privilege).

     The  /SHARE  qualifier  is  only  valid  with  the   following
     qualifiers:

                /[NO]GLOBAL_BUFFER=count/SHARE
                /[NO]STATISTICS/SHARE

     If other qualifiers are needed, they  must  be  entered  in  a
     separate SET FILE command.

     /[NO]GLOBAL_BUFFER=count/SHARE

     The /SHARE qualifier can be used to enable or  disable  global
     buffers  on a file currently being accessed.  However, any new
     global buffer settings will only be applied to  new  accessors
     of  the  file.   And  if  a file is already opened with global
     buffers, any new number of global buffers will not take effect
     until the file is closed by all accessors of the file.

          /[NO]STATISTICS/SHARE

     The  /SHARE  qualifier  can  be  used  to  enable  or  disable
     statistics  on a file currently being accessed.  However, only
     statistics of new accessors of the file will be measured.

       EXAMPLE:

       $ SET FILE/SHARE/GLOBAL_BUFFER=5000/STATISTICS INVENTORY.IDX

     This example sets 5000 global  buffers  on  the  INVENTORY.IDX
     file and enables statistics.  Without the /SHARE qualifier, if
     the file was open when the SET FILE command  was  issued,  the
     following  error would be returned:  SYSTEM-W-ACCONFLICT (file
     access conflict).  The  /SHARE  qualifier  allows  the  global
     buffers  and  statistics  to  be  enabled  on  an  open  file.
     However, these settings only apply to  new  accessors  of  the
     file.

        Images Affected:  [SYS$LDR]RMS.EXE
                          [SYSEXE]SET.EXE
                          [SYSLIB]DCLTABLES.EXE with modified SET.CLD

     The  latter  two  images  require  the  installation  of   the
     VMS721_CLIUTL-V0100 kit.

  o  Fix to prevent accvio when repeated calls are made to  Convert
     callable interface.

     When making repeated calls to the Convert  callable  interface
     from within a user application, an access violation or various
     sort errors may be returned.  The  following  conditions  must
     exist for this error to occur:

       o  An application  must  be  making  repeated  calls  to  the
          callable CONVERT interface.

       o  The current file being converted must  have  more  than  3
          keys.

       o  At least one of the previously converted files  must  have
          had all compressions disabled.

       o  The  current  file  being   converted   must   have   some
          compression enabled.

        Images Affected:  [SYSLIB]CONVSHR.EXE


  o  Fix for SQO error on CONVERT/NOSORT with collated key.

     Producing an indexed  file  with  a  collated  key  using  the
     qualifier  /NOSORT  with the CONVERT utility may fail with the
     following error:

             %CONV-F-READERR, error reading <filename>
             -RMS-F-SQO, operation not sequential (SQO set)

     This problem is fixed in OpenVMS Alpha V7.3.

        Images Affected:  [SYSEXE]CONVERT.EXE
                          [SYSLIB]CONVSHR.EXE


  o  Fix to correct the bucket size calculation for values that are
     evenly divisible by the cluster size.

     The Edit/fdl Design Facility (EDF) may calculate a larger than
     necessary bucket size when the bucket size is evenly divisible
     by the cluster size of the disk.

     This problem is fixed in OpenVMS Alpha V7.3.

        Images Affected:  [SYSEXE]EDF.EXE

  o  A GEM compiler related problem is corrected.   There  are  two
     ways the user may see the effect of this problem:

       1.  ORA-482 crashes on Oracle 8.1.6 OPS.

       2.  A process can exit with an unhandled exception with the PC
           in SYS$PUT.

       Images Affected:  [SYS$LDR]RMS.EXE

Problems Addressed in VMS721_RMS-V0100:

  o   RMS:  Put or update to an indexed file may ACCVIO.

      A LDQ  (load  quad)  instruction  generated  by  the  Bliss-64
      compiler (default quadword alignment) may result in an attempt
      being made to read or write 4 bytes beyond the end of  an  RMS
      internal  buffer which ends exactly on a page boundary with an
      adjacent inaccessible page.

      The process may either:

          +  Terminate (if SYSGEN parameter BUGCHECKFATAL not enabled)
             with an access violation (ACCVIO); or

          +  Crash the system (if BUGCHECKFATAL enabled) with a
             SSRVEXCEPT ACCVIO.

      There are too many variables (for example, bucket size, number
      of  buffers,  record  location,  number of keys) to predict in
      advance that a file is vulnerable to this  problem.   However,
      we  do  know  that the right combination of conditions must be
      rare since the problem has been dormant for several  releases.
      It  was introduced with the conversion of several Bliss-32 RMS
      modules  to  Bliss-64  as  part  of  the  support  for  64-bit
      addresses added to Alpha V7.0.


      This fix is included in the next release after  OpenVMS  Alpha
      V7.2-1H1.


  o   Mark  the  Buffer Descriptor as busy for asynch
      multistreamed block IO autoextends.

      Performing  multistreamed  asynchronous  Block  IO  to  a
      sequential  file  could  result in random data corruption
      and/or sporadic  SS$_BADPARAM  errors  if  an  autoextend
      occurs.


      This fix is included in the next  release  after  OpenVMS
      Alpha V7.2-1.


  o   Fix for potential application (or system) hang associated
      with global buffer hashing interlock.

      This kit includes fixes for two problems with the  global
      buffer  hashing  interlock  implementation  that have the
      potential of blocking the progress of other processes and
      thus inducing an application hang:

           +  Close potential window when  a  process  is  deleted.
              Expand  the  interlocked  instruction  for one bit to
              include  whole  quadword  so  that  modify  of   both
              interlock  and  pid gets done as an atomic operation.
              Otherwise, a process could be deleted  after  it  had
              set  the  interlock  but  before  its  pid  had  been
              assigned, which could result in there being no way to
              detect  that  an  interlock was held by a nonexistent
              process.

           +  Vary the timer delay before each retry for a  process
              waiting  for  an  interlock  to  be  released.   With
              sufficient contention, it was found that  the  system
              timer  processing  at  IPL 8 could block progress for
              the process  currently  holding  the  interlock  when
              expiration times were all restricted to 1 Msec.


      This fix is included in the next  release  after  OpenVMS
      Alpha V7.2-1.


  o   Correct the resultant directory string size in  NAML  for
      remote file specifications.

      The size of the resultant  directory  string  in  a  NAML
      block  structure  was  being set incorrectly when parsing
      remote file specifications.


      This fix is included in the next  release  after  OpenVMS
      Alpha V7.2-1.


  o   Correction  for  processes  exiting   with   RMS   IORNDN
      non-fatal bugcheck.

      Processes  may  disappear  with  RMS   IORNDN   non-fatal
      bugchecks  when an EXIT is requested by an Executive-mode
      application (such as ACMS).  This is a very small  timing
      window,  so  processes  with  a  large  number  of  files
      increases the probability of the problem occurring.

      If the SYSGEN parameter  BUGCHECKFATAL  is  not  enabled,
      then  the  process  will be terminated; if it is enabled,
      then the system will crash with  a  RMSBUG  (R2=FFFFFFF0,
      IORNDN) bugcheck.


      This fix is included in the next  release  after  OpenVMS
      Alpha V7.2-1.


  o   Fix RUF bugcheck when SS$_CURTIDCHANGE returned.

      The system may crash with a RUF, Fatal error detected  by
      Recovery Unit Facility bugcheck.  R0 in the crash has the
      error code:

      SDA> e/cond r0

      SYSTEM-F-CURTIDCHANGE, already a change  to  the  process
      default transaction in progress


      This fix is included in the next  release  after  OpenVMS
      Alpha V7.2-1.


  o   Support for SET RMS_DEFAULT /CONTENTION_POLICY to address
      locking fairness issues.

      The  new  Alpha  global  buffer  read-mode  lock  support
      introduced  in  V7.2-1H1  is functionally compatible with
      both VAX and older Alpha releases.  Operations  in  mixed
      clusters  produce  correct  results.  However, there is a
      locking fairness issue that may arise with mixed  cluster
      operations.

      In a mixed cluster environment with very high  contention
      for  specific  buckets,  it  is  possible for accesses to
      write-shared  files  on  nodes  using  read-mode   bucket
      locking  to  dominate  access to a bucket.  Nodes without
      this support might be unable to access the bucket  for  a
      protracted period of time.

      It is also possible to observe comparable behavior on all
      OpenVMS   versions   when   dealing   with   accesses  to
      write-shared files without global buffers enabled -- even
      on a standalone system.  A similar fairness issue between
      lock conversions and new lock requests may be observed in
      which  the  new lock requests may remain ungranted for an
      extended period of time.

      This kit includes support in RMS  for  a  new  option  to
      improve  fairness  under  high  contention conditions for
      write-shared  files,  but  selecting  this   option   may
      noticeably  increase locking overhead.  The option may be
      set  at  a  process  or   system   level.    Since   many
      applications will never encounter this issue, the default
      system behavior leaves this option  disabled.   A  future
      lock  management  enhancement  should  make this fairness
      workaround unnecessary for later releases.

      The option is  controlled  using  the  /CONTENTION_POLICY
      qualifier  to  the  DCL  command  SET  RMS_DEFAULT.   The
      following  are  valid  PROCESS  keywords   (/SYSTEM   not
      specified):

            NEVER          Never use the higher overhead option
                       to improve fairness for any write-shared
                       files accessed by this process; minimal
                       overhead.

            SOMETIMES      Use this option for fairer bucket
                           access (but higher overhead) to any
                           write-shared files with global buffers
                           enabled that are accessed by this
                           process.

            
            ALWAYS         Use this option for fairer bucket
                           access (but higher overhead) to all
                           write-shared files accessed by
                           this process.
                            
            SYSTEM_DEFAULT (Default)  Use system setting.  Note
                            that this keyword is disallowed with
                            /SYSTEM.

      The  following  are valid SYSTEM keywords (/SYSTEM specified):

            NEVER          (Default) Never use the higher
                            overhead option to improve fairness
                            for any write-shared files accessed on
                            the system; minimal overhead.

            SOMETIMES      Use this option for fairer bucket
                           access (but higher overhead) to any
                           write-shared files with global
                           buffers enabled that are accessed
                           on the system.

             ALWAYS        Use this option for fairer bucket
                           access (but higher overhead) to all
                           write-shared files accessed on the
                           system.
                                                                          
      In addition  to  the  RMS  image,  modifications  to  the
      following images are required:

                -  [SYSEXE]SET.EXE
                -  [SYSEXE]SHOW.EXE
                -  [SYSMSG]CLIUTLMSG.EXE
                -  replacement     of      modified      SET.CLD      in
                   [SYSLIB]DCLTABLES.EXE


      These   modified   images   are    available    in    the
      VMS721_CLIU-V0100   kit.    The  interface  to  this  new
      functionality is not available until this CLIUTL  kit  is
      installed.   Until  the  CLIUTL TIMA kit is available and
      installed, the default of NEVER for the CONTENTION_POLICY
      option cannot be overridden.


  o   Fix to prevent large cluster factor giving 63-block
      bucket.

      When running EDIT/FDL, the calculated  bucket  sizes  are
      always  rounded  up to the closest disk-cluster boundary,
      with a  maximum  bucket  size  of  63.   This  can  cause
      problems  when  the  disk-cluster  size is large, but the
      "natural" bucket size for the file is small, because  the
      bucket  size  is  rounded  up to a much larger value than
      required.  Larger bucket sizes increase record and bucket
      lock contention, and can seriously impact performance.


      This fix is included in the next  release  after  OpenVMS
      Alpha V7.2-1.


  o   Prevent  callable  CONVERT  from  producing   ACCVIO   on
      repeated calls.

      The CONVERT utility may return an access violation and/or
      sort_on  errors when it is repeatedly invoked from within
      an  application   utilizing   the   callable   interface.
      Additionally,  an  invalid  file structure may be created
      when the callable interface is  invoked  repeatedly  from
      within an application.


      This fix is included in the next  release  after  OpenVMS
      Alpha V7.2-1.


  o   Correction for CONVSHR SORT_ON and invalid alternate  key
      structures.

      Three  issues  with  the  CONVERT   utility   have   been
      addressed:

        +  Attempts to CONVERT a prologue 3  indexed  file  with
           greater  than  3  keys (key 3 and above) and with the
           primary key being segmented with the segments not  in
           ascending  order,  results  in invalid key structures
           being generated for key 3 and above.

        +  Using the  callable  interface  to  convert  multiple
           files,  results  in  a  SORT_ON error if any previous
           file  contains  no  records  and  has  at  least  one
           alternate key defined.

        +  Using the /SECONDARY qualifier  with  values  greater
           than   eight   results   in   invalid  alternate  key
           structures being generated.


      This fix is included in the next  release  after  OpenVMS
      Alpha V7.2-1.


  o   Prevent ISI error on close from CONVERT/RECLAIM.

      CONVERT/RECLAIM reports the following error during  image
      rundown:

      "%RMS-F-ISI, invalid internal stream identifier (ISI) value"


       This fix is included in the next  release  after  OpenVMS
       Alpha V7.2-1.


  o    Fix %CONVERT-I-SEQ errors converting sequential file.

       Attempts to convert  a  sequential  file  to  an  indexed
       format may report %CONVERT-I-SEQ errors despite convert's
       invocation of the SORT  utility.   These  errors  may  be
       reported  if  any of the input file's records are shorter
       than the primary key's highest segment.


       This fix is included in the next  release  after  OpenVMS
       Alpha V7.2-1.


  o    Expand statistic display fields for Convert.

       The record count and/or bucket counts  displayed  by  the
       statistics  function  and  ^T  function  of  Convert were
       previously limited to 8 digits.  This resulted in a field
       of  "*"s  being displayed when greater than 8 digits were
       required for displaying.


       This fix is included in the next  release  after  OpenVMS
       Alpha V7.2-1.


  o    Prevent RMS-F-AID errors converting multiple input files.

       Converting multiple indexed input  files  with  different
       area  attributes can result in an RMS-F-AID, invalid area
       ID.


       This fix is included in the next  release  after  OpenVMS
       Alpha V7.2-1.


  o    Correct propagation of LRL value to output file.

       The convert of a file could  potentially  leave  the  LRL
       field  for  the  output  file  as  zero despite the value
       existing for the input file.  This is  inconsistent  with
       previous  versions of CONVERT.  The LRL value is required
       for some file organizations.


       This fix is included in the next  release  after  OpenVMS
       Alpha V7.2-1.



INSTALLATION NOTES:

This kit requires a system reboot.  Compaq strongly recommends that
a  reboot  is performed immediately after kit installation to avoid
system instability

If you have other nodes in your OpenVMS cluster, they must also  be
rebooted  in  order  to make use of the new image(s).  If it is not
possible or convenient to reboot the entire cluster at this time, a
rolling re-boot may be performed.

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

     PRODUCT INSTALL VMS721_RMS /SOURCE=[location of Kit]

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

Additional help on installing PCSI kits can be found by typing
HELP PRODUCT INSTALL at the system prompt

All trademarks are the property of their respective owners.


</pre>
<hr><br>
<font color=660066 size=+1>This patch can be found at any of these sites:</font><p>
<a name=colorado>
<a href=http://ftp1.support.compaq.com/patches/public/vms/axp/v7.2-1/dec-axpvms-vms721_rms-v0200--4.README>Colorado Site</a><br>
<a name=georgia>
<a href=http://ftp11.support.compaq.com/patches/public/vms/axp/v7.2-1/dec-axpvms-vms721_rms-v0200--4.README>Georgia Site</a><br>
<hr><br>
<font color=660066 size=+1>Files on this server are as follows:</font><p>
<pre>
<a href=/patches/public/vms/axp/v7.2-1/dec-axpvms-vms721_rms-v0200--4.README>dec-axpvms-vms721_rms-v0200--4.README</a>
<a href=/patches/public/vms/axp/v7.2-1/dec-axpvms-vms721_rms-v0200--4.CHKSUM>dec-axpvms-vms721_rms-v0200--4.CHKSUM</a>
<a href=/patches/public/vms/axp/v7.2-1/dec-axpvms-vms721_rms-v0200--4.pcsi-dcx_axpexe>dec-axpvms-vms721_rms-v0200--4.pcsi-dcx_axpexe</a>
<a href=/patches/public/vms/axp/v7.2-1/vms721_rms-v0200.CVRLET_TXT>vms721_rms-v0200.CVRLET_TXT</a>
</pre>

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