OpenVMS ALPDCL02_071 Alpha V7.1 - V7.1-1H2 DCL ECO Summary

TITLE: OpenVMS ALPDCL02_071 Alpha V7.1 - V7.1-1H2 DCL ECO Summary
 
NOTE:  An OpenVMS saveset or PCSI installation file is stored
       on the Internet in a self-expanding compressed file.
       The name of the compressed file will be kit_name-dcx_vaxexe
       for OpenVMS VAX or kit_name-dcx_axpexe for OpenVMS Alpha.
 
       Once the file is copied to your system, it can be expanded
       by typing RUN compressed_file.  The resultant file will
       be the OpenVMS saveset or PCSI installation file which
       can be used to install the ECO.
 

Copyright (c) Compaq Computer Corporation 1999.  All rights reserved.

OP/SYS:     OpenVMS Alpha 

COMPONENT:  DCL 

SOURCE:     Compaq Computer Corporation

ECO INFORMATION:

     ECO Kit Name:  ALPDCL02_071
     ECO Kits Superseded by This ECO Kit:  ALPDCL01_071
     ECO Kit Approximate Size:  990 Blocks
     Kit Applies To:  OpenVMS Alpha V7.1, V7.1-1H1, 7.1-1H2
     System/Cluster Reboot Necessary:  No 
     Rolling Re-boot Supported:  Not Applicable 
     Installation Rating:  INSTALL_3
                           3 - To be installed on all systems running
                               the listed versions of OpenVMS which
                               are experiencing the problems described.

     Kit Dependencies:

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

         None 

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

         None 


ECO KIT SUMMARY:

An ECO kit exists for DCL on OpenVMS Alpha V7.1 through V7.1-1H2.
This kit addresses the following problems: 

Problems Addressed in ALPDCL02_071

  o  With multiple kernel threads enabled,  applications  which  use
     the  C runtime library routine GETENV may fail due to the stack
     of the calling thread being corrupted.   This  problem  usually
     occurs  as random access violations.  The bad address is always
     a process identification (PID) of one of the kernel threads  in
     the process.

     Applications which use GETENV may also hang with all threads in
     the  HIB  state.  The initial kernel thread will have user mode
     ASTs disabled.


Problems Addressed in ALPDCL01_071

  o  During a terminal hangup condition, the DCL handler would
     close open RMS files prior to image rundown and, consequently,
     prior to execution of any image exit handlers.  This would
     cause a variety of symptoms including execution loops with
     condition handlers and loss of data with language RTLs that
     buffer file data.

  o  With multiple kernel threads enabled, applications which use
     certain C runtime library routines may fail due to corruption
     of R11 on the initial kernel thread.   This usually presents
     itself as random access violation failures.


INSTALLATION NOTES:

The system does not need to be rebooted after this kit is installed.
However, if the system is a member of a VMScluster, the other cluster
members should be rebooted or this kit should be installed on each 
system in order to make use of the new image(s). 

Files on this server are as follows:

»alpdcl02_071.README
»alpdcl02_071.CHKSUM
»alpdcl02_071.CVRLET_TXT
»alpdcl02_071.a-dcx_axpexe