<s>
In	O
IBM	O
terminology	O
,	O
a	O
Program	B-Application
temporary	I-Application
fix	I-Application
or	O
Product	B-Application
temporary	I-Application
fix	I-Application
(	O
PTF	O
)	O
,	O
sometimes	O
depending	O
on	O
date	O
,	O
is	O
a	O
single	O
bug	O
fix	O
,	O
or	O
group	O
of	O
fixes	O
,	O
distributed	O
in	O
a	O
form	O
ready	O
to	O
install	O
for	O
customers	O
.	O
</s>
<s>
A	O
PTF	O
normally	O
follows	O
an	O
APAR	O
(	O
Authorized	B-Application
Program	I-Application
Analysis	I-Application
Report	I-Application
)	O
,	O
and	O
where	O
an	O
"	O
APAR	O
fix	O
"	O
was	O
issued	O
,	O
the	O
PTF	O
"	O
is	O
a	O
tested	O
APAR	O
"	O
or	O
set	O
of	O
APAR	O
fixes	O
.	O
</s>
<s>
For	O
OS/360	B-Application
and	I-Application
successors	I-Application
,	O
this	O
culminated	O
in	O
System	O
Modification	O
Program	O
(	O
SMP	O
)	O
and	O
System	B-Application
Modification	I-Application
Program/Extended	I-Application
(	O
SMP/E	B-Application
)	O
.	O
</s>
<s>
For	O
VM	B-Application
,	O
this	O
culminated	O
in	O
Virtual	O
Machine	O
Serviceability	O
Enhancements	O
Staged	O
(	O
VM/SP	B-Application
SES	O
)	O
and	O
VMSES/E	O
.	O
</s>
<s>
"	O
By	O
default	O
,	O
the	O
/home	O
file	O
system	O
on	O
VIOS	O
(	O
Virtual	O
I/O	O
Server	O
)	O
for	O
System	B-Device
p	I-Device
is	O
only	O
10GB	O
in	O
size.	O
"	O
</s>
<s>
In	O
z/OS	B-Application
,	O
the	O
PTFs	O
are	O
processed	O
using	O
SMP/E	B-Application
(	O
System	B-Application
Modification	I-Application
Program/Extended	I-Application
)	O
in	O
several	O
stages	O
over	O
a	O
course	O
of	O
weeks	O
.	O
</s>
<s>
If	O
the	O
system	O
is	O
adversely	O
affected	O
by	O
the	O
service	O
,	O
a	O
system	B-Application
administrator	I-Application
may	O
sometimes	O
selectively	O
RESTORE	O
(	O
un-apply	O
)	O
it	O
and	O
seek	O
further	O
support	O
from	O
IBM	O
.	O
</s>
<s>
This	O
is	O
referred	O
to	O
as	O
an	O
Authorized	B-Application
Program	I-Application
Analysis	I-Application
Report	I-Application
(	O
APAR	O
)	O
.	O
</s>
<s>
whether	O
or	O
not	O
a	O
Program	B-Application
Temporary	I-Application
Fix	I-Application
(	O
PTF	O
)	O
is	O
planned	O
.	O
</s>
<s>
One	O
explanation	O
of	O
Program	B-Application
Temporary	I-Application
Fix	I-Application
says	O
it	O
's	O
temporary	O
,	O
just	O
until	O
the	O
next	O
ice	O
age	O
.	O
</s>
