COPYRIGHT (C) 1984-2021 MERRILL CONSULTANTS DALLAS TEXAS USA
MXG NEWSLETTER TWENTY
MXG NEWSLETTER NUMBER TWENTY August 1, 1991
Technical Newsletter for Users of MXG : Merrill's Expanded Guide to CPE
TABLE OF CONTENTS
I. MXG Version Status.
1. Production Version is still MXG 8.8, dated April 8, 1991. 1
2. Announcement of PreRelease MXG 9.3, dated August 1, 1991. 1
II. MVS Technical Notes
1. VLF Type 41 APAR UY58027.
2. PR/SM LPAR Effective Dispatch APAR OY36668 PTF UY61907 4
3. Type 30 Interval Records for Early Address Spaces (JES2, CATLG) 4
4. CPITCBTM/CPISRBTM measure end of step CPU times, not "initiation". 4
5. DSSIZHWM is only contained in type 30 subtype 4, and is not reset. 4
6. MVS/XA APAR OY31613 caused 0 observations in PDB.STEPS, TYPE30_4. 4
7. Amdahl MDF Level 3 populates TYPE70PR observations. 5
8. Media Manager captures I/O for DFP 3.3.0 functions. 5
9. SMF-related APARS for types 6, 30, 41, 42, 78 SMF record's data. 5
10. Impact of SMFPRM default DDCONS(YES). 5
III. SAS Technical Notes.
1. SAS 6.06 has been repaired, and should now be installed and used. 6
2. SAS OPTIONS REQUIRED by MXG 8.8-9.3 for SAS versions 5.18 or 6.06. 6
3. Format library differences between MVS SAS 6.06-5.18. 8
4. MXG-under-CMS/SAS Installation and Execution Considerations. 8
5. SAS 6.06 "Data Set is Not Sorted" errors now fixed. 9
6. SAS 6.06 "VARIABLE VOLSER NOT FOUND" error now fixed. 9
7. SAS 6.06 0C4 ABENDs with SMS-managed datasets. 9
8. SAS 6.06 180-322 ERROR if CONFIG= is not specified. 9
9. SAS 6.06 013-14 ABEND if DCB does not contain RECFM=FS. 10
10. SAS 6.06 VERSIONLONG option identifies maintenance library level. 10
11. SAS 6.06 Physical I/O Errors with UNKNOWN caused now fixed. 10
12. SAS ABENDs with SAS ERROR: CPU TIME EXCEEDED. 10
13. Protection of SAS date decoding for the next millennium. 11
14. Benchmarks of SAS 5.18, 6.06, and Experimental 6.07. 11
IV. Documentation of MXG Software. 13
V. MXG Version 9.3 Installation, Space, Compatibility, etc. 14
VI. Change Log - Changes 8.248-8.305, 9.001-9.104 16-48
COPYRIGHT (C) 1991 BY MERRILL CONSULTANTS DALLAS TEXAS
MXG IS A REGISTERED TRADEMARK OF MERRILL CONSULTANTS
SAS IS A REGISTERED TRADEMARK OF SAS INSTITUTE
I. MXG Version Status.
1. Production Version is still MXG 8.8, dated April 8, 1991.
No MXG Software is shipped with this Newsletter.
The Production Version (i.e., the version that was shipped to all
sites) is still MXG 8.8. We do not plan a new Production Version
MXG PreReleases are made available between Production Versions to
either fix critical problems or to offer support for new products
or other enhancements. PreReleases are ONLY sent upon request.
Most MXG sites will not need to replace their MXG 8.8 Software,
but critical errors in these products have been found and fixed:
MVS/ESA 4.2 sites need MXG 9.2 plus Change 9.040 or MXG 9.3.
VMXGVTOF sites need MXG 9.1 or later.
VMACEPIL sites need MXG 8.9 or later.
All sites must review the alphabetical list of critical changes,
below, in the Change Log to determine if any of the other changes
or enhancements affect their site.
MXG 8.8 was shipped to all sites April 8, 1991. Member VMACEPIL
was overlaid by member CHANGES, and Replacement MXG 8.9 dated May
1, 1991 was created. MXG PreRelease 9.1 became available June 1,
with additional changes and enhancements. MXG PreRelease 9.2 was
built July 1, 1991.
2. Announcement of PreRelease MXG 9.3, dated August 1, 1991.
You can now request (phone, fax, or via your local SAS Office) your
copy of MXG PreRelease 9.3, dated August 1, 1991, which not only
corrects all know problems, but also contains these enhancements,
which are described further in the Change Log, below.
Support for Amdahl's SPMS Release 1.2 SMF record.
Support for 4th Dimension's CONTROL-D SMF record.
Support for CA-1 (TMS) Release 5 complete rewrite.
Support for CADAM's Statistics Data File.
Support for CICS/ESA 3.2.1 product.
Support for EPILOG/CICS thru 451 added, and enhanced.
Support for Fischer's Totally Automated Office TAO.
Support for HSM 2.6 SMF record.
Support for Interlink's SNS/SNA Gateway SMF record.
Support for Interlink's SNS/TCPaccess SMF record.
Support for Interlink's SNS/TCPvt SMF record.
Support for MVS/ESA 4.2 type 42, 72, and 74 records validated.
Support for NPM 4.1.1 product.
Support for NetView FTP SMF record.
Support for Shared Medical Systems CICS exclude logic.
BUILDPDB exits EXPDB304 and EXPDB6 externalize tailoring.
Cache RMF Reporter support enhanced, decoded, and documented.
DB2 Reports incorrect values corrected.
DB2 Audit Reports not created if PDB=SMF specified.
DB2 Acct/Stat Trend Data Base implemented.
Fujitsu FACOM MSP and FSP supported in XPDLPDA.
IMS Input Queue time correction.
TMON/CICS Release 9.0 supported via conversion only.
VM/XA Trend Data Base implemented.
3490E cartridge tape now recognized.
Sites that have installed MXG 8.8 should find no compatibility
issues in replacing 8.8 (or 8.9 - 9.2) with MXG 9.3. However, if
you are replacing a version of MXG earlier than 8.8 with MXG 9.3
you must be aware of these compatibility issues and exposures:
a. Use the installation notes for MXG 8.8, below, for MXG 9.3.
b. The SAS OPTIONS required by MXG were changed between MXG 7.7 and
MXG 8.8, but no new required OPTIONS were introduced in MXG 9.3.
See Section III, "SAS Notes", below.
c. Execution under SAS 6.06 is different than under SAS 5.18 and is
discussed in the "SAS Notes", Newsletter NINETEEN Section IV.
d. To create your PDB directly on tape, IMACCICS must be changed.
e. If you have added additional SMF record processing to BUILDPDB,
and you still execute MXG under SAS 5.18, you may encounter a
SAS Version 5.18 Compiler Limit "344" error. BUILDPDB is larger.
See Change 7.038 in member CHANGE07 for 344 error circumvention.
All Changes described in the Change Log are installed in MXG 9.3.
The MXG 9.3 library contains 1,444 members, 322,585 lines of code,
and builds 911 datasets with 32,393 variables documented in DOCVER!
MXG 9.3 should replace your production version MXG 8.8. We always
ship the newest PreRelease to any new customer, because each new
PreRelease has always been better and safer than its predecessor.
3. MXG Software possible future (subject to change) enhancements:
DB2 2.3 will be supported when available, late in October, 1991.
Landmark CICS Version 9.1 will be developed later this year.
MIM writes an SMF record that will be supported later this year.
NETSPY LAN records will be supported later this year.
JES3 Tape Mount Merge with TYPETMNT is a future consideration.
Cray UNICOS is a future consideration.
VAX/VMS Account/SPM is a distant future consideration.
Candle's Omegamon for CICS ESA is a future consideration.
Several companies have announced plans for VTAM monitors.
Validation of EXPLORE/VM & AS400 support is a future consideration.
4. IBM Announcements and their MXG support.
IBM has made many major announcements relating to the System/390,
the ES/9000 family, and ESCON capabilities. The following table
identifies announced availability dates for the IBM product, and the
corresponding Version of MXG required to support that IBM product.
Product Name Availability MXG Version
MVS/370, MVS/XA (all) long ago 8.8
RMF 4.1.2 (for MVS/ESA 3.1.3) Sep 7, 1990. 8.8
RMF 4.2 (for MVS/ESA 4.1) Oct 26, 1990. 8.8
MVS/ESA 4.1 Oct 26, 1990. 8.8
MVS/ESA 4.2 Mar 29, 1991. 9.3
RMF 4.2.1 (for MVS/ESA 4.2) Mar 29, 1991. 9.3
CICS/ESA 3.1 1990 8.8
CICS/ESA 3.2 Jun 28, 1991. 9.2
DB2 2.2.0 1990 8.8
DB2 2.3.0 Oct 28, 1991. 9.?
VM/ESA 1.1.0 (370 Feature) Oct 26, 1990. 8.8
VM/ESA 1.1.0 (ESA Feature) Mar 29, 1991. 8.8
VM/ESA 1.1.1 Dec 27, 1991. 9.?
II. MVS Technical Notes
1. VLF Type 41 APAR UY58027.
VLF PTF UY58027 solves problems both with the measurement of VLF
(Type 41 record) and the performance - without the PTF the Percent
Hit in VLF kept dropping over time.
2. PR/SM LPAR Effective Dispatch APAR OY36668 PTF UY61907
PR/SM LPAR Management Time PTF UY61907 now exists for the APAR
OY36668 described in Newsletter 19.
3. Type 30 Interval Records for Early Address Spaces (JES2, CATLG)
Subtype 2 and 3 type 30 SMF records are not normally written for
"Early Address Spaces" (ASIDs that are created before SMF is fully
up, like JES2, Catalog Address Space, etc.), but the IBM Information
APAR II04729 tells you how to ZAP one IF statement (added to fix an
error that only happened when someone unwisely issued the SET SMF
command before SMF initialization had completed) so that these SMF
interval 30 records will be created. Don't let operators issue the
SET SMF command until SMF is up, install the ZAP, and get records!
4. CPITCBTM/CPISRBTM measure end of step CPU times, not "initiation".
The two "Initiator/Privileged State" CPU measures in type 30
records, MXG variables CPITCBTM and CPISRBTM have had nothing to do
with "Initiation" since about 1984; either MVS 1.3.3 or MVS 2.1.3
changed their meaning, and they have since that time measured the
TCB and SRB CPU used by a step between the "end of program execute"
until "the end of the merge of the step's subtype 3 (last interval)
DD statistics into the subtype 4 (the step termination) record".
This interval usually is quite small, but before the DDCONS=NO
option existed in SMF, these times were actually explicit measures
of how much CPU time it took to do the DD consolidation! The 1984
MXG Guide showed these times to be not captured in RMF type 72 data,
but it appears now that the two CPI times may be in TYPE72 too.
Benchmark analysis to confirm this belief is in progress.
Note: 24APR97. See ADOC30 variable description for more accurate
and up-to-date discussion of what is measured in CPITCBTM/CPISRBTM.
5. DSSIZHWM is only contained in type 30 subtype 4, and is not reset.
The DSSIZHWM (Data Space Size high water mark) in type 30 data is
only contained in the subtype 4 records, and is not reset at each
step; it reflects the highest value for the life of the job, and if
it goes down, you won't know it from the 30's! IBM is aware of this
and looking into possibly changing what is put in which record.
6. MVS/XA APAR OY31613 caused 0 observations in PDB.STEPS and TYPE30_4.
Newsletter NINETEEN mentioned MVS/XA-only OY31613/UY56157 were in
error and caused corruption of Job name in SMF. It turns out that
installation of that PTF also corrupts the subtype value, causing
MXG to not recognize type 30 subtype 4 records which led to 0
observations in PDB.STEPS and 0 resources in PDB.JOBS! IBM APAR
OY38538 which describes the PE now has a PTF, UY57938, which
corrects their error.
7. Amdahl MDF Level 3 populates TYPE70PR observations.
Amdahl's MDF Level 3 changes make use of the RMF type 70 PR/SM
sections, and sites with MDF Level 3 will now see observations in
MXG dataset TYPE70PR. However, Amdahl's MDF uses the WAITCOMP=YES
design (albeit with much smaller timeslices than IBM's
implementation), and this causes the LCPUPDTM Partition Dispatch
duration under MDF to be quite different than under PR/SM. The
LCPUPDTM under MDF is the total time the domain was dispatched,
including idle time, and thus it CANNOT be used to measure processor
utilization under MDF. It is useable only to compare the domain
dispatch time to their MDF targets. To measure capacity (processor
utilization) under MDF, you must use the data from each domain
(e.g., TYPE70 for MVS domains, VMXAINTV for VM/XA); there is no
central source for capacity measurement when WAITCOMP=YES is
specified, since the dispatch time measurement says nothing about
how much of that time was actually being used by the engines. Amdahl
Memorandum 4610-034-91 by Douglas A. Smucker provides more details
on how to intrepret RMF data under MDF, and is very well written.
8. Media Manager captures I/O for DFP 3.3.0 functions.
A major problem in current MVS measurement is the absence of I/O
counts (EXCPs or SSCH) if the "Media Manager" is involved; there was
earlier cited an IBM note in which it was explicitly stated that
counts were not kept because the Media Manager was so fast it was
not needed! Apparently, this is changing, as DFP 3.3.0 is now
rumored to capture Media Manager I/O for its functions, but the
details are sketchy. Maybe we'll get counts of DB2's I/Os through
the Media Manager too in the future? Stay tuned!
9. SMF-related APARS for types 6, 30, 41, 42, 78 SMF record's data.
OY40625 - Vector Affinity CPU times wrong
OY36517 - Type 78 Subtype 3 truncated
OY36035 - Type 42 Subtype 3 errors
OY36043 - Type 42 Subtype 3 errors
OY29986 - Type 6 JES2 3.1.3 truncated
OY31406 - Cache RMF Reporter causes all RMF records lost
OY34829 - Ditto (originally mis-printed as OY34295)
OY29801 - VLF Type 41 Subtype 3 data errors
OY32368 - Ditto
OY49794 - Ditto
OY51970 - Ditto
OY36879 - Type 30 DD segments lost
10. Impact of SMFPRM default DDCONS(YES).
The impact of DDCONS(YES) is measurable because SMFTIME timestamps
when each record is moved (memory-to-memory) to the SMF task. One
subtype 2 event created seven 30s at .19 .19 .19 .22 .32 .36 & .46
TOD seconds, with 9182 DDs. The subtype 3 event created two records
both at TOD of 18.89 seconds, with 1929 DDs, and then processing for
the subtype 4 took until 36.50 TOD to create the first of eight
subtype 4 records, with the last created at 40.93 TOD. The subtype 4
had 11,070 DDs, while there were 11,111 DDs in the 2s and 3s. The DD
consolidation took 22 elapsed seconds (and recorded CPITCBTM of 22
CPU seconds!) from the end of step until the step actually ended!
And consolidation only removed 31 DD segments from the step record!
The time to consolidate grows exponentially with the number of DDs
to be scanned, and DDCONS(NO) was created by IBM so you could avoid
its cost, but in keeping with IBM practices, the default value was
left at DDCONS(YES), so you must change PARMLIB(SMFPRMxx) yourself.
III. SAS Technical Notes.
Notes 1 thru 4 are revised from Newsletter NINETEEN, but the rest
of these notes are new.
1. SAS 6.06 has been repaired, and should now be installed and used.
SAS 6.06 has been repaired, as long as you have installed at least
the March, 1991, or later, SAS Usage Notes tape maintenance, which
contains an IEBCOPY load library with ALL SAS ZAPs pre-applied for
all SAS products. SAS 6.07 will be available later this year, but
THERE IS NO LONGER ANY REASON TO DELAY INSTALLING SAS VERSION 6.
All MXG-critical error conditions have been fixed, and SAS 6.06 has
eliminated the SAS 5.18 Compiler Error 344 which has plagued sites
that have extended BUILDPDB to process additional SMF records.
MXG NOW RECOMMENDS MIGRATION TO SAS 6.06.
2. SAS OPTIONS REQUIRED by MXG 8.8 or later, for version 5.18 or 6.06.
Please read this section carefully. MXG execution will fail if you
do not pay attention to these (potentially incompatible) changes:
Options that are MANDATORY with either SAS Version 5.18 or 6.06:
NOIMPLMAC MAUTOSOURCE SASAUTOS=SOURCLIB ERRORABEND MACRO DQUOTE
IMPLMAC should never be used in ANY program.
MAUTOSOURCE and SASAUTOS=SOURCLIB are required by MXG to
resolve %MACRO references without extra I/O by using autocall.
ERRORABEND ensures SAS stops on any error condition.
MACRO enables SAS to recognize %MACROs.
DQUOTE is needed to extract values of certain string %MACROs.
Options MANDATORY with SAS Version 5.18 (do NOT exist in 6.06):
MWORK was needed in large %MACROs (like %ANALDB2R).
GEN=0 was needed to eliminate unnecessary I/O and CPU time, and
is discussed in the 1984 Guide (see Index).
Options MANDATORY with SAS Version 6.06 (did not exist in 5.18):
Previously, MXG recommended MEMSIZE=12M, but programs that build
many datasets concurrently (like BUILDPDB, VMACVMXA, etc.) will
need more of this virtual storage above the line, because of the
new MXG recommended value for BLKSIZE='half-track'. The MEMSIZE
option only works under MVS/XA and MVS/ESA, and since it is not
a real resource, and only used when needed during the "building"
phase in MXG processing, the new default of MEMSIZE=24M should
not cause any problem, and will avoid unnecessary ABENDs.
If you are using MXG and SAS 6.06 under MVS/370 or CMS/370, you
will have to reduce this MEMSIZE= parameter to no more than 6M,
and must reduce the BLKSIZE (try 4096, or the minimum 1024).
Small BLKSIZE will allow your program to compile, but the DASD
work space you will need will significantly increase, as will
the run-time, IOs, and CPU requirements for the same job.
See the SAS Benchmarks, below, for actual numbers.
Options STRONGLY RECOMMENDED for SAS 6.06 performance:
BLKSIZE=23040 BUFNO=2 -- for 3380's
BLKSIZE=27648 BUFNO=2 -- for 3390's
See "SAS Benchmarks" below to see resource savings.
Note that the SAS Procedure supplied by SAS Institute contains
a default value of BLKSIZE=6144 on the WORK DD statement; you
must override that WORK DD and provide the correct BLKSIZE:
// EXEC MXGSASV9
//WORK DD DCB=BLKSIZE=23040
The BLKSIZE option in the CONFIG member cannot override if a
DCB=BLKSIZE value was specified in the JCL.
Options recommended with either SAS Version 5.18 or 6.06:
NOSOURCE NOSOURCE2 NOMACROGEN NOMPRINT NOMLOGIC
So how do you specify these recommended/required MXG options?
In Version 5.18, MACRO and MWORK=28000 must be specified on the EXEC
statement, but all other options could be specified on an OPTIONS
statement right after your SYSIN DD * statement. However, so you do
not have to remember them nor type them, MXG member SASOPTV5 has all
of the recommended options in an OPTIONS statement, so you need only
%INCLUDE SOURCLIB(SASOPTV5); as your first SAS statement:
//stepname EXEC SAS518,OPTIONS='MACRO MWORK=28000'
//SYSIN DD *
... the rest of your program ...
For SAS Version 6.06+, options can be via an OPTIONS statement, via
the CONFIG DDNAME, or (as is MXG's recommendation), via the CONFIG=
JCL parameter on the EXEC statement. MXG member CONFIG contains the
MXG-required and recommended options, and was changed in MXG 9.3 to
increase BLKSIZE and MEMSIZE). The CONFIG= parameter is much safer
than the CONFIG DD statement, since overriding DDs in PROCs must be
EXACTLY in the right order:
// EXEC SAS606,TIME=10,
IF YOU DON'T HAVE THE RIGHT OPTIONS IN EFFECT, YOU WILL RECEIVE
RUDE AND INSULTING SAS ERROR MESSAGES, INCLUDING 180 ERRORssss!
3. Format library differences between MVS SAS 6.06-5.18.
The MXG-built "SASLIB" formats are built by the first step of either
JCLTEST (for SAS 5.18) or JCLTEST6 (for SAS 6.06).
Under SAS Version 5.18, formats are members of a PDS load library
which must be allocated as SPACE=(CYL,(3,1,99)). SAS 5.18 formats
are always referenced using the DDNAME of SASLIB.
Under SAS Version 6.06, formats are members of a SAS data library,
which must be allocated as SPACE=(CYL,(1,1)). Note there is NOT a
third parameter in SPACE (for PDS directory blocks) because data
libraries in SAS 6.06 are physical sequential files. SAS 6.06
formats are always referenced using the DDNAME of LIBRARY.
In either version of SAS, the blocksize is set by the PROC FORMAT.
MXG always requires the appropriate DDNAME (SASLIB or LIBRARY).
You will fail with SAS 170 FORMAT NOT FOUND errors if you do not
have the correct format library pointed to by the correct DDNAME.
4. MXG-under-CMS/SAS Installation and Execution Considerations.
a. CMS Format libraries are different.
MXG Formats are created under SAS 6.06 by executing member FORMATS,
which creates a SAS Catalog that is named 0FORMATS LIBRARY (yes, the
first character is a numeric zero and the third an alphabetic
"oh"). Since this catalog contains all of the MXG Formats, the
installation instructions on page 120 of the MXG Supplement ("iv.
Optionally copy TEXT into TXTLIB") no longer apply. Also the SASLIB
SASLIB option in the example is not used to access SAS 6.06 Formats
(although SASLIB SASLIB is still valid in SAS 6.06 to access SAS
5.18-built formats). As long as the 0FORMATS LIBRARY file built by
member FORMATS is on your first disk, SAS 6.06 will automatically
find MXG formats there.
b. Virtual Storage requirement for MXG and SAS 6.06 with VM/370.
Executing under VM/370, MXG needed a 10MB machine for BUILDPDB, and
the BLKSIZE=1024 was specified to make sure it fit! It was also
necessary to use the NOSSEG option to disable the "SAS Saved
Segment" so that addresses above 7MB could be use, because the SAS
Saved segment begins at address 7MB! The NOSSEG only applies to
your machine, and is needed only for the big virtual memory programs
that build lots of MXG datasets simultaneously (BUILDPDB, VMACVMXA,
VMACVMON, etc.). The rest of MXG needs only a 4MB machine under
VM/370. The BLKSIZE is set small in the REXXTES6 exec, so that the
virtual storage required for the biggest MXG programs (BUILDPDB)
would fit in the 10 meg I could get under VM/370, but you should
experiment to use the largest BLKSIZE you can (and still compile the
data step!). Small block size reduces only the virtual storage size;
a large block size will reduce CPU time, elapsed time, I/O
interrupts, and will actually reduce the real memory required
(always true for sequential access).
Executing under VM/XA, MXG was tested in a 16MB machine.
c. CMS SAS 6.06 ZAPs required.
SAS ZAPS Z6062068 (add) and Z6060508 (remove) appear to solve the
only serious CMS SAS 6.06 problem. Without the zap, CMS MACLIB
CONCAT concatenation fails, and you cannot read members from the
CMS has also caused strange syntax errors, partial execution, etc.,
if your SYSIN is unnumbered and you did not use SAS OPTION S=72 (to
restrict SAS to use only the first 72 positions). Because all of
MXG source is numbered, the REXX examples now have added S=72 as a
d. CMS Testing Notes.
The REXX exec that was used for MXG testing under CMS SAS 6.06 is in
member REXXTST6. Before the exec is invoked, you must first issue
the DEFINE STOR 10M command, followed by the IPL CMS command. All
datasets are sent to your "T" disk, a temporary disk (199 cylinders
in the exec) that will go away at logoff, unless you use the USER=
SAS option, or PROC COPY.
5. SAS 6.06 "Data Set is Not Sorted" errors now fixed.
"Data Set is Not Sorted" and other errors thought to be fixed by
Z6062141 (which was on the March 1991 SAS Usage Notes Tape) can
still crop up, if BUILDPDB is used with a data library that had been
built before Z6062141 was installed. Apparently the root problem
not only corrupted the WORK file, causing failure, but also in some
instances actually created a permanent SAS data set which had an
invalid record length in it. If you have Z6062141 installed and
still encounter these errors, you should scratch and reallocate your
SPIN and PDB data libraries. The actual error occurs on a dataset
in your WORK library, often on WORK.GOOD30_4, and the error may not
mention SPIN or PDB names. Scratching and reallocation your SPIN
library means that the data for jobs which are incomplete (i.e., in
your SPIN library) will be lost. Additional work space errors were
also repaired by Z6062026, available on the current SAS Usage tape.
6. SAS 6.06 "VARIABLE VOLSER NOT FOUND" error now fixed.
ZAPs Z6061834 or Z6062315 will cause "VARIABLE VOLSER NOT FOUND"
with VMXGVTOC (but not VMXGVTOF) because the ZAPs are in error.
Z6062674 corrects the error, but read Change 8.294 first.
7. SAS 6.06 0C4 ABENDs with SMS-managed datasets.
SAS 6.06 ABENDs with 0C4 during initialization if the datasets in
the CONFIG concatenation are SMS-managed datasets. SAS ZAP Z6062264
is required for SMS-managed datasets. See Change 8.294.
8. SAS 6.06 180-322 ERROR if CONFIG= is not specified.
SAS 6.06 ABENDs with 180-322 ERROR message if you do not have in the
CONFIG= parameter pointing to the MXG member CONFIG. The error text
"Expecting Variable Here" made it sound like a syntax error in MXG
type 110 processing!
9. SAS 6.06 013-14 ABEND if DCB does not contain RECFM=FS.
SAS 6.06 may ABEND with 013-14 "Error outside SAS System" when PROC
FORMAT tries to open the LIBRARY DD, or with USER 999 error "LIBRARY
xxx IS NOT IN A VALID FORMAT FOR ACCESS METHOD SASEB" for a data
library, if the DDNAME being opened has only DSORG=PS specified.
SAS detects a version 6.06 library by RECFM=FS, and if only DSORG=PS
is found, SAS say's it's not a SAS 6.06 dataset. Adding RECFM=FS to
the DD statement for all SAS data libraries will circumvent either
ABEND, but the SAS error has been fixed in SAS 6.07. The 013-14
failure of PROC FORMAT was precipitated by the absence of RECFM=FS,
but enhanced by another error in FORMAT; it did not properly handle
the return code from OPEN properly, and thought you were trying to
open a 5.18 format library, and tried to set the DSORG to PO!
Specifying RECFM=FS corrects both. Why did OPEN see only DSORG=PS
on a new dataset? Because the site was SMS-managed, and had used SMS
to circumvent an HSM 2.5 error! Because HSM 2.5 would not migrate a
dataset that had not been opened, the site used SMS to always fill
in a DSORG=PS if nothing had been specified on the DD statement,
and the HSM error (fixed in HSM 2.6) was circumvented. Although
SAS will be smarter and not fail in the future when just DSORG=PS
is found, MXG now specifies RECFM=FS in all 6.06 JCL examples.
10. SAS 6.06 VERSIONLONG option identifies maintenance library level.
"But how do I know that my SAS installer has really installed the
current maintenance library from SAS" can now be answered. The SAS
6.06 options "VERSIONLONG" will print the date of the maintenance
library in effect, on the SAS log, right after the SAS version
number (6.06.01.01Feb91P for example). MXG has added VERSIONLONG to
the default options in member CONFIG.
11. SAS 6.06 Physical I/O Errors with UNKNOWN caused now fixed.
SAS 6.06 Physical I/O Errors with UNKNOWN cause occur with SAS multi
volume libraries, and are fixed by Z6062241. Read Appendix 2 of the
SAS Companion for the MVS Environment if you need multi-volumes.
12. SAS ABENDs with SAS ERROR: CPU TIME EXCEEDED.
ABENDs with "CPU TIME EXCEEDED" messages can occur erratically in
either SAS 5.18 or 6.06+, if some task outside SAS issues a STIMER
macro. SAS itself issues a STIMER to capture and record the CPU time
of each DATA/PROC step, but a second STIMER can confuse SAS into
thinking you have used lots of CPU time when you really didn't! For
some time, using FREE=CLOSE on a DD statement has been known to
cause this ABEND. Now there is another source of STIMER conflict.
A site with TMS and Tape Silos found that if non-scratch tapes (to
TMS) were put in the Silo by operations (incorrectly) as scratch
tapes, the silo mounted the tape, but then TMS rejected the tape as
non-scratch, caused a second silo mount, and the job then (later)
ABENDs! While I still don't know for sure why STIMERs are issued in
either of these two cases, my guess is that Allocation is somehow
involved. In any event, the solution is to specify the SAS option
NOSTIMER (it must be on the EXEC statement), which disables SAS
recording of CPU times on the log and in the SAS user SMF record,
but avoids the erratic ABEND.
13. Protection of SAS date decoding for the next millennium.
Validation that dates into the next millennium are supported, or
creating an algorithm for decoding all dates has begun. This is
an initial list of the input date formats and data functions:
a. SMF/RMF format input with SMFSTAMP8. and RMFSTAMP8. values:
These input formats were designed long ago to use the century bit,
even before IBM defined the c in 'tttttttt0cyydddF'x format, and
were properly converted in SAS 5.18. They fail (INVALID ARGUMENT)
in SAS 6.06, but are now corrected in Experimental 6.07.
b. DATEJUL(YYYYDDD), e.g. 1999365 or 2000001, INPUT YYYYDDD PD4.:
The DATEJUL function properly converts values in this format.
c. DATEJUL(0CYYDDD), e.g. 0099365 or 0100001), INPUT CYYDDD PD4.:
The DATEJUL function does not currently support the century bit,
but SAS has been asked to extend the function. However, you can
convert the 0cyyddd value to a SAS date using:
until the DATEJUL supports the century bit.
d. C YY DDD in separate variables.
The correct algorithm to convert to SAS dates is:
e. DDD and YYYY in separate variables.
The correct algorithm to convert to SAS dates is:
14. Benchmarks of SAS 5.18, 6.06, and Experimental 6.07.
Test runs of MXG's JCLTEST6 stream has shown remarkable improvement.
Whereas SAS 5.18 took 116 minutes elapsed time, SAS 6.06 reduced
that to 91 minutes, but SAS 6.07 needed only 40 elapsed minutes!
SAS 6.07 has also significantly reduced the CPU increase we saw with
SAS 6.06. JCLTEST6 used 8 CPU minutes under SAS 5.18, used 30 CPU
minutes under SAS 6.06, and 6.07 needed only 11 CPU minutes!
JCLTEST6 may not be typical of a daily PDB run, but it exercises SAS
by building every possible MXG data set, one at a time, creating
lots of small data sets, and then PROC PRINT and PROC MEANSing them.
The real benchmark job of interest is the daily BUILDPDB, which was
executed with an input SMF file of 10,000 steps, 3800 jobs, and 18
hours of RMF data, from 32MB of SMF data. The results of several
experiments show consistent improvement in 6.07:
---Read SMF Infile--- --Job Total-- Work PDB
Experiment CPU Elapsed Virtual CPU Elapsed Tracks Tracks
m:ss m:ss m:ss mm:ss
6.07-OBS=0 :40 1:28 17194K :59 2:42 354 104
6.07-23040 2:12 5:31 15764K 2:58 10:48 578 474
6.07- 6144 2:11 6:03 15556K 2:58 12:00 1396 517
6.06-23040 2:34 7:40 12440K 3:28 15:07 803 494
5.18-23040 1:25 ? 4000K 2:08 14:25 691 438
The first Experiment was an execution with SMF DD DUMMY so no real
records were processed; this test exercised the SAS compiler and
actually created every data set in the PDB, but all had zero obs.
This run shows the minimum cost of a daily BUILDPDB is 59 CPU secs
and 2:42 elapsed minutes, and that 2/3 of that CPU and 1/2 of the
elapsed time is spent in the INFILE processing step of BUILDPDB.
This BUILDPDB was tailored to also process DB2 100 and 101 records,
so it is not exactly the overhead of the following four runs, which
did not include the DB2 processing.
The other four Experiments all read the 32MB SMF file and created
a representative PDB.
The 6.07-23040 and 6.07-6144 compare the impact, especially in the
size of the work file, of the BLKSIZE option. The default 6144 run
required 1396 tracks of work space, but the half-track recommended
blocksize needed only 578 tracks. The PDB dropped from 517 tracks
with 6144 to only 474 tracks with half-track blocking. It should be
quite clear why you want half-track blocksize on your MXG database.
Note CPU times were the same, testifying to improvements in the SAS
I/O engine, but the elapsed time is also improved by the half-track
blocksize, dropping from 12 to less than 11 minutes.
The 6.06-23040 experiment compared with the 6.07-23040 runs shows
the decrease in CPU (3:28 down to 2:58) and Elapsed (15 minutes down
to less than 11) and reduced work space (803 down to 578) and PDB
size (494 down to 474) with the 6.07 improvements.
The final 5.18-23040 experiment shows the 6.07 CPU did not quite get
back to the old 5.18 value, but the run time improvement of 6.07 is
appreciable, and 6.07 used less work space than 5.18 too!
It was the analysis of these experiments that convinced me to change
the CONFIG options for SAS 6.06+ to BLKSIZE=23040, BUFNO=2.
SAS gets a big ATTABOY for their improvements coming in SAS 6.07!
IV. Documentation of MXG Software.
Member CHANGES always contains the version number of MXG Software, and
it lists changes that were installed in that version. The members named
CHANGEnn have the contents of CHANGES when that "nn" MXG version was
created. Description of enhancements will be found in the text of the
Change description that made the enhancement (in those CHANGES and
CHANGEnn members). The CHANGE members can be scanned online (with SPF
BROWSE) to search for specific product name references (CICS, MVS/ESA,
etc.). The text of each Change identifies the member(s) that were added
or altered by that change. Documentation (especially for new product's
support) is usually also found in comments at the beginning of those
members listed in the change entry.
Member NEWSLTRS contains the text of all newsletters (up through the
newsletter that accompanied that MXG release). You can search NEWSLTRS
for product name or acronym to find the technical notes, APARs, etc.
from all MXG newsletters. (The Change Log of each Newsletter is not
replicated in member NEWSLTRS, since that text will be in CHANGES).
Member DOCVERnn is the "delta-documentation" (in abbreviated Chapter
FORTY style) of only those variables and datasets that were changed
between successive MXG Versions. There is a DOCVERnn "delta" member in
the MXG library for each version.
Penultimately, member DOCVER contains abbreviated Chapter FORTY format
that documents all of the variables names in all of the MXG data sets
that are created by that MXG Software Version (alphabetically by data
set name and variable name).
Finally, MXG is a source distributed system, so you can often find your
answer by BROWSE/EDIT of the source member, especially the VMACs that
actually create the data set, or ANALs that analyze the MXG data sets.
In many instance, the MXG Variable name is the IBM or Vendor's field or
DSECT field name. In other cases, the DSECT field name is carried as a
comment beside in the MXG INPUT statement to map field name to MXG's
variable name. MXG expects you to also have access to the vendor's
documentation of particular data records you are using for analysis.
V. MXG Version 9.3 Installation, Space, Compatibility, etc.
MXG Compatibility Exposures in MXG Version 9.3 for Existing Users:
a. The SAS options required by MXG for execution have changed since
MXG 7.7 (but not since MXG 8.8).
b. Execution under SAS 6.06 is different than under SAS 5.18.
c. To create your PDB directly on tape, IMACCICS must be changed.
d. If you have added additional SMF record processing to BUILDPDB,
and you still execute MXG under SAS 5.18, you may encounter a
SAS Version 5.18 Compiler Limit "344" error. BUILDPDB is larger.
See Change 7.038 in member CHANGE07 for 344 error circumvention.
Always read comments in the CHANGES member for compatibility issues, as
well as for any last minute changes added after Newsletter composition.
1. Installation, re-installation, and Space Requirements.
The MXG Installation instructions were found in Chapter 32 of the MXG
Supplement for both new installation and for version replacement, and
those instructions, plus this discussion, is still usable. MXG SOURCLIB
member INSTALL will be a complete rewrite of Installation Instructions
for MXG, consolidating both Chapter 32s and these notes. After you have
unloaded the MXG SOURCLIB and read these notes, read member INSTALL.
The MXG tape is distributed as a Non-Labelled (NL) tape with a single
file, DCB=RECFM=FB,LRECL=80,BLKSIZE=32720, that is actually an unloaded
Partitioned Data Set containing 1446 members (and about 322,585 source
lines) in IEBUPDTE format.
Under MVS use the IEBUPDTE utility to build the MXG.SOURCLIB library.
Under CMS use the TAPPDS command to build the SOURCLIB MACLIB library.
Under MVS, MXG Version 9.3 MXG.SOURCLIB requires SPACE=(CYL,(42,1,299))
and DCB=(RECFM=FB,LRECL=80,BLKSIZE=32720) on DASD.
Under CMS, approximately the same space (45 cylinders) will eventually
required by the MXG SOURCLIB MACLIB, but during the CMS installation
process you should have at least 100 free cylinders on your minidisk.
MXG is tailored and extended by "Installation Macro" members (begin with
IMAC) and the "MXG Exit Facility" members (begin with EX) that are put
in the installation's "USERID.SOURCLIB", the "MXG Tailoring" library,
that is concatenated ahead of MXG.SOURCLIB in your SOURCLIB DDNAME:
//SOURCLIB DD DSN=USERID.SOURCLIB,DISP=SHR --> site tailoring (yours)
// DD DSN=MXG.SOURCLIB,DISP=SHR --> never changed (mine)
If this is an MXG re-install, there should already be a USERID.SOURCLIB.
If not, then allocate one using the same attributes as the MXG.SOURCLIB,
with SPACE=(CYL,(1,1,99)); for CMS create an equivalent MACLIB.
Tailor by copying the member from my library to your library.
IMAC.... members are self-documenting. IMACAAAA indexes all IMACs.
You should create a member CHANGES in your USERID.SOURCLIB and record
therein chronologically your MXG tailoring and installation history,
just like the member CHANGES in our MXG.SOURCLIB tracks MXG itself.
You must also browse the members in USERID.SOURCLIB. If there are VMACs
members in your library, they will override the new MXG VMAC member, and
thus you should remove all VMACs that override MXG when you install a
new verison of MXG. However, it is normal to have IMACs members there.
If you have installed printed changes from an MXG Newsletter, you
might-have copied VMAC member(s) from MXG.SOURCLIB into your site's
USERID.SOURCLIB and then made the changes therein, or alternatively,
you could have made a new PDS (we suggested the name MXG.CHANGLIB)
into which you put those in-between-version changes, concatenating
it between USERID.SOURCLIB and MXG.SOURCLIB until you receive this
new MXG Version. In either case, if you made temporary changes,
now is the time to remove them. Delete the changed VMACs members
from your USERID.SOURCLIB, or remove the MXG.CHANGLIB from your
If you have tailored IMAC.... members in your USERID.SOURCLIB, and
that member was changed by the new MXG Version, you must compare your
member with the new MXG member, and retrofit your tailoring on the
new member. These IMACs are of particular importance, if they exist:
IMACPDB (options for BUILDPDB) has changed and must be retrofit.
IMACKEEP can cause syntax errors when MXG creates a new dataset from
an existing record. For example, in 8.8, CICS/ESA added new
CIC.... datasets in TYPE110/VMAC110 processing. If IMACKEEP
had been used to tailor the variables kept in CICSTRAN by
redefining the _VAR110 macro (an appropriate use of this
tailoring exit), the new dataset will cause "Dataset not in
DATA statement" SAS error condition), until you retrofit
your IMACKEEP changes using _VAR110 from the current MXG.
Whenever you install changes or test a new version of MXG (or even your
own reports), be extra careful to look on the SAS log for any real error
conditions. Search for all occurrences of "ERROR:" and "ERROR :" and
"UNINITIALIZED" and "NOT CATLGD", as they may indicate a serious error.
A PROC PRINT and a PROC MEANS of each new MXG-built SAS dataset can help
you to understand their contents, and should be used to examine any
unusually large, negative, or suspicious values. Print all variables in
the data set, and read the variable's descriptions in Chapter FORTY.
Summary of critical actions to be taken in installing new version:
a. All VMAC.... members in your USERID.SOURCLIB must be examined
and, in general, must be deleted.
b. All IMAC.... members in your USERID.SOURCLIB must be compared
with the new IMAC.... members, and if there is a difference,
you MUST start with this version's IMAC and retrofit your
installation's tailoring. Member IMACAAAA indexes IMAC's.
c. It is always wisest to PROC PRINT the first 50 observations of
important datasets, especially PDB.JOBS, which can be affected
by user tailoring in IMACPDB. A visual scan of that PROC PRINT
serves as an excellent validation of correct installation, and
will almost always detect any serious problems BEFORE you begin
your production MXG runs! See also the MXG utility UTILPRAL.
VI. Change Log
You MUST read each Change description to determine if a Change will
impact your site. All changes have been made in this MXG Library.
Member CHANGES of the MXG SOURCLIB will always be more accurate than
the printed changes in a Newsletter, because the software is created
after the newsletter is sent to the printer!
Member CHANGES always identifies the actual version and release of
MXG Software that is contained in that library.
The actual code implementation of some changes in MXG SOURCLIB may be
different that described in the printed NEWSLETTER (which might have
printed only the easily installed, critical part of the correction).
Always read the comments at the beginning of each source member named
under the Change Number for impacting changes.
Documentation of new datasets and variables, validation status, notes,
etc., are usually in comments in the source members.
Changes thru 9.104 are contained in MXG PreRelease 9.3, Aug 1, 1991.
Changes thru 9.069 were contained in MXG PreRelease 9.2, July 1, 1991.
Changes thru 9.038 were contained in MXG PreRelease 9.1, June 3, 1991.
Changes thru 8.305 were contained in MXG Production 8.9, May 1, 1991.
Changes thru 8.285 were contained in MXG Production 8.8, Apr 8, 1991.
Changes thru 8.283 were printed in NEWSLETTER NINETEEN, Apr 8, 1991.
Alphabetic INDEX of significant changes in MXG 9.3 (all after MXG 8.8):
Member Change Description
ANALACHE 8.293 Cache RMF Reporter analysis uses 3990 records now.
ANALDB2R 8.299 Variable Not Found if only Acct Trace Long requested.
ANALDB2R 9.030 DB2 Reports have incorrect values for some fields.
ANALDB2R 9.032 DB2 Audit Reports not created if PDB=SMF specified.
ANALDB2R 9.104 DB2 Trace TRANSIT report causes DATA IS NOT SORTED.
ANALRACF 9.064 RACF Analysis of OPERATOR,SPECIAL activity.
ANALTMS 9.059 PROC SUMMARY out of memory condition.
ANALVVDS 9.031 PERM should be changed to MXGVVDS.
ANALVVDS 9.053 MXG 9.1 only, VMXGVVDS should have been MXGVVDS.
AS400PDS 8.286 AS400PDS contains no records.
ASUM70PR 9.091 TYPE70PR data summarized into PDB.ASUM70PR
ASUMDBDS 9.012 TMON/CICS trending fails with Release 7 data.
ASUMJOBS 8.291 EXCPTOTL, IOTMTOTL were not kept in BATCHJOB.
BUILDPDB 9.049 SAS 6.06 and MXG 8.8 under MVS/370 options.
BUILDPDB 9.095 Dataset TYPE0203 added to default datasets built
CASORT66 8.295 SAS datasets destroyed by CASORT release 6.6.
CHANGE08 9.073 Example to create _DAY in 8.213 was wrong
CONFIG 9.022 Option VERSIONLONG specified to display SAS version.
DIFFDB2 9.080 Not all DB2STAT0/1 variables were deaccumulated
EXPDB304 9.034 BUILDPDB/3 steps data creation exit.
EXPDB6 9.034 BUILDPDB/3 steps data creation exit.
IEBUPDTE 8.286 Unload of MXG 8.8 set condition code 4.
IMACACCT 8.290 ACCOUNT FIELD n LENGTH WRONG corrected.
IMACCICS 9.005 PDB cannot be built on tape unless IMACCICS changed.
IMACEXCL 9.051 Support for CICS type 110 EXCLUDE statement.
IMACFMTS 9.066 New IMAC for user formats for SAS 6.06.
IMACKEEP 9.017 A better way to drop MXG variables not using IMACKEEP
JCLDASD 9.031 MXGDASD,PERM DDNAMEs should be DISK,MXGDASD
SPUNJOBS 9.005 PDB.SPUNJOBS on tape caused 207 error.
SPUNJOBS 9.013 SPUNJOBS timestamps not 8 bytes, truncating values.
TLMS 9.041 TLMS causes 713-04 ABEND if DBLTIME=0.
TRND70PR 9.091 TYPE70PR data creates new TREND.TRND70PR
TRND71 9.092 TYPE71 data creates new TREND.TRND71
TRND72 9.093 MVS/ESA 4.2 variables added to TREND.TRND72
TRNDDB2A 8.301 DB2 Acct trending failed in 2nd week of execution.
TRNDDB2S 8.301 DB2 Stats trending failed in 2nd week of execution.
TRNDVMXA 9.028 VM/XA Trend Data Base implemented.
TRNDVMXA 9.089 VM/XA Trended PFXUTIME and PCTCPUBY incorrectly
TYPEMON8 9.011 TMON/CICS Release 9.0 supported via conversion only.
TYPEMON8 9.015 TMON/CICS Version 8 History file cause MXG failure.
TYPEPDL 8.297 Fujitsu FACOM MSP and FSP support replaced XPDLPDA.
UTILCICS 9.019 Not Sorted error corrected for CICS/ESA dictionary.
VDOCACHE 9.027 Documentation re-write has begun.
VMAC110 8.292 Unexpected Statistics Subtype due to Boole CICSMGR.
VMAC110 9.051 Support for Shared Medical Systems CICS modifications
VMAC110 9.062 Support for CICS/ESA 3.2.1.
VMAC110 9.084 CICS PCLOADCN has different meaning.
VMAC110M 9.008 SAS 5.18 344 circumvention caused BUILDPDB failure.
VMAC28 9.061 Support for NetView Performance Monitor NPM 4.1.1.
VMAC30 9.001 INVALID DATA FOR SMF30ASO with MVS/ESA 4.2 eliminated
VMAC30 9.085 STCs starting with A confused APPC logic.
VMAC42 9.048 Circumvention of IBM DFP 3990 Cache type 42 errors.
VMAC57 9.010 Invalid ESS Section message due to IBM error.
VMAC6 9.083 OUTDEVCE changes affect PRINTLNE, EXTWTRLN
VMAC6156 9.046 TYPE6156 variables ACTION, FUNCTION not valid.
VMAC7072 9.001 INVALID DATA FOR IOCRFC with MVS/ESA 4.2 eliminated.
VMAC7072 9.054 MXG 9.1 only, Change 9.001 incompletely installed.
VMAC7072 9.070 TYPE72 CPUHPTTM,CPUIIPTM,CPURCTTM wrong in MVS 4.2
VMAC7072 9.072 TYPE70PR LCPUADDRs 2 and 3 wrong if DEDICATED CPU
VMAC73 9.001 INVALID DATA FOR IODFDATE in MVS/ESA 4.2 eliminated.
VMAC74 9.001 First STOPOVER with MVS/ESA 4.2 data corrected.
VMAC74 9.039 Second STOPOVER with MVS/ESA 4.2 data corrected.
VMAC78 9.055 STOPOVER with MVS/ESA 4.2 data corrected.
VMAC78CU 9.047 Missing fields due to IBM microcode errors.
VMAC79 9.007 Support for (archaic?) RMF 3.5.1 type 79 records.
VMACACF2 8.289 ACF 5.2 new variables not kept.
VMACACF2 9.086 ACF2 REC=L CN=3 records were not output
VMACACHE 8.293 Cache RMF Reporter support enhanced and decoded.
VMACAIM2 8.298 Fujitsu AIM database manager records corrected.
VMACCADM 9.021 Support for CADAM's Statistics Data File.
VMACCTLD 9.038 Support for 4th Dimension's CONTROL-D SMF record.
VMACDCOL 8.285 IBM DASD measures use MB for million, not megabytes.
VMACDMON 9.065 ASTEC RLDCNT,RDLCNT incorrect
VMACEPIL 8.284 Support for EPILOG/CICS 451 added, and enhanced.
VMACEPIL 8.287 Invalid member on MXG 8.8 replaced.
VMACFTP 9.056 Support for NetView FTP User SMF record.
VMACHSM 9.097 Support for HSM 2.6 SMF record
VMACILKA 9.020 Support for Interlink's SNS/TCPaccess SMF record.
VMACILKG 9.020 Support for Interlink's SNS/SNA Gateway SMF record.
VMACILKV 9.020 Support for Interlink's SNS/TCPvt SMF record.
VMACIMS 9.063 TYPEIMS Input Queue time correction.
VMACNSPY 9.033 STOPOVER protection for invalid records.
VMACNSPY 9.044 STOPOVER with NETSPY Accounting record.
VMACNSPY 9.045 NETSPY Accounting subtype caused STOPOVER.
VMACSMF 9.094 New message at end of SMF processing on log
VMACSPMS 9.088 Support for Amdahl's SPMS Release 1.2 SMF record
VMACTAO 9.018 Support for Fischer's Totally Automated Office TAO.
VMACTMS5 9.016 Support for CA-1 (TMS) Release 5 complete rewrite.
VMACTMS5 9.057 Missing semicolons.
VMACUCB 9.002 3490E cartridge tape now recognized.
VMACVMXA 8.296 VM/XA used more work space than really required.
VMACVMXA 9.096 'LOGICAL RECORD SPANS" message corrected
VMXGHSM 9.009 HSM MCD data can cause STOPOVER.
VMXGVTOF 9.035 SAS 5.18 only, did not read all extents.
VMXGVTOF 9.040 First Extent on each volume lost. .
WEEKBLD 9.050 Submitting job may need DCB on INTRDR DDNAME.
XMAC74 9.054 MXG 9.1 only, Change 9.001 incompletely installed
Inverse chronological list of all Changes:
Changes 9.104-9.001 and 8.305-8.284 were printed here in Newsletter 20
See member CHANGE09 for actual change text.
End of Changes Log in Newsletter TWENTY.