<s>
System	B-Application
Modification	I-Application
Program/Extended	I-Application
(	O
SMP/E	B-Application
)	O
,	O
the	O
proprietary	O
version	O
of	O
System	O
Modification	O
Program	O
(	O
SMP	O
)	O
,	O
"	O
is	O
a	O
tool	O
designed	O
to	O
manage	O
the	O
installation	O
of	O
software	O
products	O
on	O
 [ a ] 	O
z/OS	B-Application
system	O
and	O
to	O
track	O
the	O
modifications	O
"	O
to	O
those	O
products	O
.	O
</s>
<s>
SMP/E	B-Application
manages	O
multiple	O
software	O
versions	O
,	O
helps	O
apply	O
patches	O
and	O
updates	O
(	O
PTFs	B-Application
)	O
,	O
facilitates	O
orderly	O
testing	O
and	O
,	O
if	O
necessary	O
,	O
reversion	O
to	O
a	O
previous	O
state	O
,	O
allows	O
a	O
"	O
trial	O
run	O
"	O
pseudo-installation	O
to	O
verify	O
that	O
actual	O
installation	O
will	O
work	O
,	O
keeps	O
audit	O
and	O
security	O
records	O
to	O
assure	O
only	O
approved	O
software	O
updates	O
occur	O
,	O
and	O
otherwise	O
provides	O
highly	O
evolved	O
,	O
centralized	O
control	O
over	O
all	O
software	O
installation	O
on	O
z/OS	B-Application
.	O
</s>
<s>
Although	O
it	O
is	O
possible	O
to	O
design	O
and	O
ship	O
software	O
products	O
that	O
install	O
on	O
z/OS	B-Application
without	O
SMP/E	B-Application
,	O
most	O
mainframe	O
administrators	O
prefer	O
SMP/E	B-Application
-enabled	O
products	O
,	O
at	O
least	O
for	O
non-trivial	O
packages	O
.	O
</s>
<s>
Using	O
SMP/E	B-Application
typically	O
requires	O
some	O
working	O
knowledge	O
of	O
Job	B-Application
Control	I-Application
Language	I-Application
(	O
JCL	O
)	O
,	O
although	O
most	O
products	O
supply	O
sample	O
JCL	O
.	O
</s>
<s>
The	O
rigorous	O
software	O
management	O
discipline	O
associated	O
with	O
SMP/E	B-Application
typically	O
extends	O
to	O
product	O
documentation	O
as	O
well	O
,	O
with	O
IBM	O
and	O
other	O
vendors	O
supplying	O
a	O
standardized	O
"	O
Program	O
Directory	O
"	O
manual	O
for	O
each	O
software	O
product	O
that	O
precisely	O
aligns	O
with	O
the	O
SMP/E	B-Application
work	O
processes	O
.	O
</s>
<s>
Use	O
of	O
SMP/E	B-Application
to	O
manage	O
system	O
updates	O
helps	O
ensure	O
system	O
integrity	O
,	O
by	O
making	O
sure	O
that	O
the	O
system	O
is	O
in	O
a	O
consistent	O
state	O
and	O
that	O
changes	O
to	O
that	O
state	O
are	O
properly	O
audited	O
.	O
</s>
<s>
IBM	O
introduced	O
SMP	O
in	O
OS/360	B-Application
and	O
OS/VS	B-Application
to	O
replace	O
semi-manual	O
processes	O
involving	O
tools	O
such	O
as	O
IEBEDIT	O
and	O
IMAPTFLE	O
.	O
</s>
<s>
IBM	O
introduced	O
SMP/E	B-Application
for	O
OS/VS	B-Application
;	O
however	O
,	O
SMP/E	B-Application
Release	O
2	O
is	O
the	O
last	O
release	O
to	O
support	O
OS/VS1	B-Application
.	O
</s>
<s>
SMP/E	B-Application
stores	O
tracking	O
data	O
in	O
VSAM	O
datasets	O
rather	O
than	O
the	O
PDSs	O
that	O
SMP	O
release	O
1	O
through	O
4	O
use	O
.	O
</s>
<s>
While	O
originally	O
a	O
separate	O
product	O
,	O
SMP/E	B-Application
is	O
bundled	O
with	O
z/OS	B-Application
.	O
</s>
<s>
IBM	O
ultimately	O
introduced	O
similar	O
tools	O
for	O
other	O
operating	O
systems	O
,	O
e.g.	O
,	O
Maintain	O
System	O
History	O
Program	O
(	O
MSHP	O
)	O
for	O
DOS/VS	O
,	O
Virtual	O
Machine	O
Serviceability	O
Enhancements	O
Staged	O
(	O
VM/SP	B-Application
SES	O
)	O
,	O
(	O
now	O
VMSES/E	O
)	O
,	O
for	O
VM/SP	B-Application
through	O
z/VM	B-Application
.	O
</s>
<s>
A	O
software	O
package	O
is	O
composed	O
of	O
elements	O
,	O
individual	O
components	O
such	O
as	O
object	B-Application
files	I-Application
(	O
MOD	O
)	O
,	O
macros	O
(	O
MAC	O
)	O
,	O
sample	O
programs	O
(	O
SAMP	O
)	O
,	O
etc	O
.	O
</s>
<s>
The	O
CSI	O
(	O
Consolidated	O
Software	O
Inventory	O
)	O
is	O
a	O
dataset	O
containing	O
the	O
information	O
that	O
SMP/E	B-Application
needs	O
to	O
track	O
the	O
contents	O
of	O
the	O
distribution	O
and	O
target	O
libraries	O
.	O
</s>
<s>
A	O
simple	O
declarative	O
language	O
called	O
MCS	O
(	O
Modification	O
Control	O
Statements	O
)	O
provides	O
the	O
information	O
to	O
SMP/E	B-Application
identifying	O
the	O
SYSMOD	O
and	O
providing	O
information	O
on	O
how	O
to	O
install	O
it	O
.	O
</s>
<s>
A	O
requisite	O
chain	O
is	O
the	O
"	O
sequence	O
of	O
SYSMODs	O
that	O
are	O
directly	O
or	O
indirectly	O
identified	O
as	O
requisites	O
for	O
a	O
given	O
SYSMOD	O
,	O
"	O
for	O
example	O
,	O
if	O
A	O
is	O
a	O
prereq	O
for	O
B	O
,	O
and	O
B	O
is	O
a	O
prereq	O
for	O
C	O
,	O
then	O
A	O
and	O
B	O
are	O
the	O
requisite	O
chain	O
for	O
C	O
and	O
both	O
need	O
to	O
be	O
installed	O
before	O
C	O
,	O
although	O
not	O
necessarily	O
in	O
a	O
separate	O
run	O
of	O
SMP/E	B-Application
.	O
</s>
<s>
HOLDDATA	O
is	O
a	O
set	O
of	O
MCS	O
statements	O
that	O
indicate	O
that	O
specific	O
SYSMODS	O
contain	O
errors	O
or	O
require	O
manual	O
processing	O
outside	O
the	O
scope	O
of	O
SMP/E	B-Application
before	O
they	O
can	O
be	O
installed	O
.	O
</s>
<s>
SMP/E	B-Application
manages	O
two	O
types	O
of	O
libraries	O
.	O
</s>
<s>
Each	O
product	O
(	O
FMID	O
)	O
has	O
its	O
own	O
set	O
of	O
distribution	O
libraries	O
which	O
are	O
normally	O
used	O
only	O
by	O
SMP/E	B-Application
.	O
</s>
<s>
Libraries	O
in	O
OS/360	B-Application
and	I-Application
successors	I-Application
,	O
unlike	O
directories	O
in	O
unix	B-Application
,	O
usually	O
contain	O
only	O
one	O
type	O
and	O
format	O
of	O
data	O
.	O
</s>
<s>
A	O
software	O
package	O
may	O
have	O
object	B-Application
libraries	O
(	O
MOD	O
)	O
,	O
ISPF	B-Operating_System
panels	O
(	O
PNL	O
)	O
,	O
macro	O
libraries	O
(	O
MAC	O
)	O
and	O
many	O
more	O
.	O
</s>
<s>
SMP/E	B-Application
is	O
a	O
single	O
large	O
program	O
which	O
runs	O
as	O
a	O
batch	B-General_Concept
job	I-General_Concept
.	O
</s>
<s>
A	O
series	O
of	O
ISPF	B-Operating_System
panels	O
can	O
be	O
used	O
to	O
interactively	O
build	O
the	O
SMP/E	B-Application
job	O
stream	O
based	O
on	O
user	O
input	O
.	O
</s>
<s>
The	O
SMP/E	B-Application
RECEIVE	O
command	O
processes	O
SYSMODs	O
from	O
a	O
source	O
outside	O
of	O
SMP	O
.	O
</s>
<s>
Commonly	O
SMP/E	B-Application
is	O
instructed	O
to	O
also	O
automatically	O
apply	O
any	O
requisites	O
in	O
"	O
RECEIVE	O
"	O
status	O
to	O
minimize	O
these	O
errors	O
.	O
</s>
<s>
There	O
is	O
no	O
way	O
in	O
SMP/E	B-Application
to	O
undo	O
an	O
ACCEPT	O
operation	O
except	O
to	O
delete	O
all	O
installation	O
libraries	O
including	O
the	O
CSIs	O
(	O
and	O
to	O
start	O
installation	O
again	O
)	O
.	O
</s>
<s>
SMP/E	B-Application
is	O
a	O
large	O
,	O
complex	O
program	O
;	O
features	O
and	O
datasets	O
are	O
added	O
with	O
every	O
release	O
.	O
</s>
<s>
The	O
major	O
SMP/E	B-Application
datasets	O
are	O
:	O
</s>
<s>
The	O
CSI	O
contains	O
all	O
the	O
information	O
SMP/E	B-Application
needs	O
to	O
track	O
the	O
distribution	O
and	O
target	O
libraries	O
.	O
</s>
<s>
The	O
PTS	O
data	O
set	O
is	O
used	O
to	O
hold	O
PTFs	B-Application
as	O
received	O
.	O
</s>
