Updated: 24-SEP-2003 (Use your browsers' Reload button to ensure you're viewing the most recent version)
VMS721H1_RMS-V0800 Alpha V7.2-1H1 RMS ECO Summary
*OpenVMS] VMS721H1_RMS-V0800 Alpha V7.2-1H1 RMS ECO Summary
New Kit Date: 23-JUL-2002
Modification Date: Not Applicable
Modification Type: NEW KIT
Copyright (c) Compaq Computer Corporation 2002. All rights reserved.
OP/SYS: OpenVMS Alpha
COMPONENT: RMS
SOURCE: Compaq Computer Corporation
ECO INFORMATION:
ECO Kit Name: VMS721H1_RMS-V0800
DEC-AXPVMS-VMS721H1_RMS-V0800--4.PCSI
ECO Kits Superseded by This ECO Kit: VMS721H1_RMS-V0700
ECO Kit Approximate Size: 3104 Blocks
Kit Applies To: OpenVMS Alpha V7.2-1H1
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), or later, must be installed BEFORE
installation of this, or any required kit:
VMS721H1_UPDATE-V0500
In order to receive all the corrections listed in this
kit, the following remedial kits, or later, should also be installed:
None
ECO KIT SUMMARY:
An ECO kit exists for RMS on OpenVMS Alpha V7.2-1H1. This kit addresses
the following problems:
PROBLEMS ADDRESSED IN VMS721H1_RMS-V0800 KIT
o RMS: Fix to prevent possible process hangs and system crashes
when files with global buffers are accessed.
An application accessing a file with global buffers enabled
might experience any one of several symptoms ranging from an
IVLOCKID being returned to RMS through a possible SSRVEXCEPTN
due to corruption of an RMS internal control structure.
Prior to this change, it is possible for an internal table
maintained by RMS (the Global Buffer Interlock Table) within
its global buffer sections to overflow. This can potentially
result in corruption to adjoining control structures. No user
data are compromised; however, the process may hang or the
system crash dependent on what is overwritten. This problem
is most prevalent on systems where there is a high turnover of
processes.
Images Affected:[SYS$LDR]RMS.EXE
o RMS: Fix for a lock hang on a global buffer resource.
The symptoms of the hang are as follows:
- A global buffer resource has in its granted queue a
process PW lock and a system CR lock.
- The conversion queue for this resource has a long line of
NL-to-PW or NL-to-EX requests blocked by the PW granted
lock.
This is not a lock manager problem. The PW global buffer lock
holder is waiting for the system CR lock to be released. The
release of the system CR lock is dependent on a flag
(internally managed by RMS) indicating a writer wants access
to the resource and a reference count maintained in an
internal RMS structure. Until the system CR lock is released
and the flag cleared by the last referencer, the process
holding the PW lock will continue to block any other processes
lining up in the conversion queue.
This fix corrects a race condition where if a process was
interrupted (stopped or aborted by a $delprc) while actively
using the system CR lock, it was possible for the cleanup of
the internal RMS structure to be bypassed. This would cause
the reference count to get out of sync and result in the
system CR lock not getting properly released after a writer
requested access to the resource.
Images Affected:[SYS$LDR]RMS.EXE
o RMS: Avoid an exec-mode infinite loop if RMS ever attempts to
add a duplicate key value to a compressed index bucket.
An index bucket should never have a duplicate key value.
There is the potential, however, some inconsistency
(corruption) in a lower level could result in such an attempt
in the case of a compressed key. A correction has been added
to issue a nonfatal RMS bugcheck (ISAM) and avoid the loop.
Images Affected:[SYS$LDR]RMS.EXE
o RMS: Fix for some records being potentially skipped over in a
reverse key search.
If the very last bucket in the data bucket chain for a
particular key-of-reference is empty (no valid records), the
potential exists for any valid records in the next-to-the-last
bucket (and only this bucket) being skipped over in the
backwards scan done by a reverse key search.
This problem is restricted to a reverse key search.
Images Affected:[SYS$LDR]RMS.EXE
o RMS: Correction for circumflex returned in resultant string
for search error cases.
When a one-character wildcard % is used in a search, if no
file is found (an error is returned), the resultant string
returned in the user NAM[L] structure has a circumflex (^)
character inappropriately inserted just before the %. This
affects a number of DCL utilities which display the resultant
string with their error messages (e.g., DELETE, TYPE, RENAME
and COPY). For example:
$ delete %.jnk;*
%DELETE-W-SEARCHFAIL, error searching for SYS$COMMON:[FOO]^%.JNK;*
-RMS-E-FNF, file not found
Images Affected:[SYS$LDR]RMS.EXE
o CONVERT: Fix for remote file DAP protocol regression.
The convert utility fails with the following error when the
input file is a sequential file on a remote foreign (non-VMS)
system and the output file is a sequential file on a VMS
system if and only if /SORT is explicitly specified or implied
by /FDL:
%CONV-F-READERR, Error reading (IBM_filename)
-RMS-F-BUG_DAP, Data Access Protocol error detected;
DAP code = 0001A008
The problem is not reproducable using a remote VMS system.
Images Affected:[SYSEXE]CONVERT.EXE
[SYSLIB]CONVSHR.EXE
PROBLEMS ADDRESSED IN VMS721H1_RMS-V0700 KIT:
o Fix for RMS global buffer hang due to abort ($delprc)
rundowns.
An application may experience a hang under the following
conditions:
- RMS global buffers are enabled on some files.
- Many processes are terminated with $delprc (e.g., STOP/ID)
when files are still open.
- The application is restarted after the process
terminations without rebooting the system.
The symptom for this problem is that during the restart of the
application, a process enters a tight loop in executive mode.
Once encountered, a system reboot is required to clear the
problem.
Images Affected: [SYS$LDR]RMS.EXE
[SYSLIB]SDARMS$SHARE.EXE
o RMS fix for inconsistent secondary key index structure.
Any application that does a lot of deleting or does updates
that change a no duplicate secondary key value to another
value in an indexed file is a potential candidate for this
problem.
An ANALYZE/RMS_FILE of the indexed file reports the following
error for a secondary key:
"Index bucket references missing data bucket with VBN nnn"
The problem may be that the secondary index structure has
duplicate index value entries and there should never be
duplicates in the index structure. If the secondary index
allows a binary search (is uncompressed), records could be
hidden using an exact secondary key lookup.
This problem results from the entire space being
inappropriately reclaimed for the physically last SIDR record
in some secondary data bucket which contains only deleted
entries.
This problem is restricted to an indexed file with a secondary
key that allows no duplicates. The primary key contents will
be intact and correct, and a convert of the file will rebuild
the secondary indexes and leave the file in a consistent
state.
Images Affected: [SYS$LDR]RMS.EXE
o Fix to prevent the CONVERT/RECLAIM utility from producing an
inconsistent index structure in an indexed file during a
reclamation.
An ANALYZE/RMS_FILE reports the following error:
"Index bucket references missing data bucket with VBN nnn"
A level 1 index record associated with a data (level 0) bucket
that was reclaimed was not removed from the index bucket, as
it should have been.
It is extremely difficult to detect in advance of doing a
convert/reclaim whether an indexed file is vulnerable if a
reclaim were applied to it. For example, one condition is
that one of the initial level 1 index buckets associated with
data buckets eligible for reclamation has some condition (for
example, only one index record) that will cause a rollback of
a removed index record during a reclamation.
Without the fix, doing a full convert (without the /RECLAIM
qualifier) ensures avoiding this problem.
Images Affected: [SYSEXE]RECLAIM.EXE
[SYSEXE]CONVERT.EXE
[SYSLIB]CONVSHR.EXE
o Fix to the CONVERT utility to prevent the signal of a fatal
read error (CONV-F-READERR) with an RMS-S-NORMAL secondary
status when callable convert is invoked within a threaded
application. This correction prevents the erroneous error
signal when the end of the input file is reached.
Although callable convert is not a thread safe application, it
is possible to invoke the callable interface from within a
single instance within a single thread.
Images Affected: [SYSEXE]CONVERT.EXE
[SYSLIB]CONVSHR.EXE
o Fix to the CONVERT utility to prevent a convert which uses
either network or tape input from creating an empty output
indexed file.
Images Affected: [SYSEXE]CONVERT.EXE
[SYSLIB]CONVSHR.EXE
RELATED ARTICLES:
Detailed articles describing the problems listed above may exist in
the OPENVMS database. To view these articles, open the appropriate
product database and perform a query using either of the following
search strings: 'VMS721H1_RMS-V0800' or 'VMS721H1_RMS'.
ECO KIT ORDERING INSTRUCTIONS:
If after an evaluation you wish to obtain this kit, request it
electronically using the appropriate Advanced Electronic Services
(AES) Service Tool. If you are not familiar with how to request
kits electronically, open the DIA, WIS or DSNLINK database and
review the article entitled:
[AES] How To Electronically Request ECO Kits Using Service Tools
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.
INSTALLATION INSTRUCTIONS:
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 VMS721H1_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
SPECIAL INSTALLATION INSTRUCTIONS:
o Scripting of Answers to Installation Questions
During installation, this kit will ask and require user
response to several questions. If you wish to automate the
installation of this kit and avoid having to provide responses
to these questions, you must create a DCL command procedure
that includes the following definitions and commands:
- $ DEFINE/SYS NO_ASK$BACKUP TRUE
- $ DEFINE/SYS NO_ASK$REBOOT TRUE
- Add the following qualifiers to the PRODUCT INSTALL
command and add that command to the DCL procedure.
/PROD=DEC/BASE=AXPVMS/VER=V8.0
- De-assign the logicals assigned
For example, a sample command file to install the
VMS721H1_RMS-V0800 kit would be:
$
$ DEFINE/SYS NO_ASK$BACKUP TRUE
$ DEFINE/SYS NO_ASK$REBOOT TRUE
$!
$ PROD INSTALL VMS721H1_RMS/PROD=DEC/BASE=AXPVMS/VER=V8.0
$!
$ DEASSIGN/SYS NO_ASK$BACKUP
$ DEASSIGN/SYS NO_ASK$REBOOT
$!
$ exit
All trademarks are the property of their respective owners.
==========================================================================
| Table of Kit Image Information |
+----------------------------+----------+-----------------+--------------+
| | Overall | Image File | Image Link |
| Image Name | Checksum | Identification | Date/Time |
+----------------------------+----------+-----------------+--------------+
| CONVERT.EXE | 47D160B8 | X-8 | 12-JUN-2002 |
| | | 09:17:16.26 |
+----------------------------+----------+-----------------+--------------+
| CONVSHR.EXE | 23CEF833 | X1-012 | 12-JUN-2002 |
| | | 09:17:06.18 |
+----------------------------+----------+-----------------+--------------+
| DDIF$RMS_EXTENSION.EXE | EA41E25A | X-3 | 24-SEP-2001 |
| | | 13:54:40.14 |
+----------------------------+----------+-----------------+--------------+
| EDF.EXE | 41884B92 | X-02 | 17-MAR-2001 |
| | | 09:37:44.52 |
+----------------------------+----------+-----------------+--------------+
| RECLAIM.EXE | 5CB2DEBB | X-6 | 12-JUN-2002 |
| | | 09:17:20.64 |
+----------------------------+----------+-----------------+--------------+
| RMS.EXE | 74795F55 | V1.0 | 12-JUL-2002 |
| | | 09:25:04.35 |
+----------------------------+----------+-----------------+--------------+
| SDARMS$SHARE.EXE | 35393AC9 | X-9 | 12-JUL-2002 |
| | | 09:26:32.95 |
+----------------------------+----------+-----------------+--------------+
|
