<s>
IBM	B-Language
WebSphere	I-Language
Application	I-Language
Server	I-Language
for	O
z/OS	B-Application
is	O
one	O
of	O
the	O
platform	O
implementations	O
of	O
IBM	O
's	O
WebSphere	B-Language
Application	I-Language
Server	I-Language
family	O
.	O
</s>
<s>
The	O
WebSphere	B-Language
Application	I-Language
Server	I-Language
for	I-Language
z/OS	I-Language
V7	O
product	O
has	O
code	O
to	O
directly	O
exploit	O
the	O
following	O
attributes	O
of	O
the	O
platform	O
:	O
</s>
<s>
Version	O
7.0	O
of	O
WebSphere	B-Language
Application	I-Language
Server	I-Language
for	I-Language
z/OS	I-Language
provides	O
five	O
functions	O
that	O
are	O
informally	O
known	O
as	O
the	O
"	O
zDiff	O
"	O
functions	O
.	O
</s>
<s>
They	O
represent	O
specific	O
exploitation	O
of	O
the	O
z/OS	B-Application
platform	O
.	O
</s>
<s>
New	B-Language
SMF	I-Language
120	I-Language
,	I-Language
Subtype	I-Language
9	I-Language
--	O
A	O
new	O
SMF	B-Language
record	O
designed	O
new	O
with	O
V7.0	O
that	O
addressed	O
many	O
of	O
the	O
shortcomings	O
of	O
the	O
earlier	O
SMF	B-Language
records	O
cut	O
by	O
WAS	O
z/OS	B-Application
.	O
</s>
<s>
Optimized	B-Language
Local	I-Language
Adapters	I-Language
--	O
an	O
externalization	O
of	O
a	O
pre-existing	O
cross-memory	O
communication	O
feature	O
.	O
</s>
<s>
This	O
allows	O
address	O
spaces	O
outside	O
of	O
the	O
WAS	O
z/OS	B-Application
application	O
server	O
the	O
ability	O
to	O
participate	O
in	O
the	O
same	O
cross-memory	O
exchange	O
that	O
exists	O
within	O
a	O
WAS	O
z/OS	B-Application
cell	O
.	O
</s>
<s>
The	O
Optimized	B-Language
Local	I-Language
Adapters	I-Language
(	O
"	O
OLA	O
"	O
or	O
"	O
WOLA	O
"	O
)	O
are	O
bi-directional	O
,	O
allowing	O
the	O
invocation	O
of	O
EJB	O
assets	O
from	O
outside	O
the	O
application	O
server	O
,	O
and	O
the	O
invocation	O
of	O
services	O
in	O
external	O
facilities	O
such	O
as	O
CICS	O
,	O
batch	O
programs	O
,	O
or	O
Unix	O
Systems	O
Services	O
processes	O
.	O
</s>
<s>
FRCA	O
--	O
"	O
Fast	O
Response	O
Caching	O
Accelerator	O
,	O
"	O
is	O
a	O
function	O
of	O
the	O
Communication	O
Server	O
element	O
of	O
z/OS	B-Application
.	O
</s>
<s>
In	O
Version	O
7	O
of	O
WAS	O
z/OS	B-Application
the	O
application	O
servers	O
support	O
the	O
using	O
of	O
the	O
API	O
as	O
well	O
.	O
</s>
<s>
The	O
important	O
distinction	O
is	O
that	O
with	O
WAS	O
z/OS	B-Application
the	O
FRCA	O
caching	O
is	O
seen	O
as	O
an	O
external	O
caching	O
provider	O
to	O
the	O
WAS	O
DynaCache	O
facility	O
.	O
</s>
<s>
If	O
interruption	O
is	O
not	O
possible	O
it	O
provides	O
a	O
mechanism	O
to	O
delay	O
the	O
EC3	O
abend	O
of	O
the	O
servant	O
region	O
,	O
which	O
is	O
the	O
way	O
WAS	O
z/OS	B-Application
refreshes	O
a	O
JVM	O
.	O
</s>
<s>
The	O
new	O
function	O
provides	O
several	O
enhancements	O
over	O
prior	O
versions	O
of	O
WAS	O
z/OS	B-Application
:	O
the	O
ability	O
to	O
set	O
a	O
custom	O
number	O
of	O
threads	O
per	O
servant	O
JVM	O
;	O
the	O
ability	O
to	O
set	O
a	O
threshold	O
percent	O
of	O
threads	O
that	O
may	O
be	O
marked	O
hung	O
before	O
processing	O
an	O
EC3	O
abend	O
;	O
and	O
a	O
new	O
"	O
excessive	O
CPU	O
"	O
variable	O
that	O
will	O
quiesce	O
the	O
WLM	O
enclave	O
of	O
a	O
thread	O
that	O
has	O
exceeded	O
a	O
specified	O
amount	O
of	O
CPU	O
time	O
.	O
</s>
<s>
XCF	O
stands	O
for	O
Cross-Coupling	O
Facility	O
and	O
is	O
a	O
function	O
of	O
the	O
System	O
z	O
and	O
z/OS	B-Application
Parallel	B-Operating_System
Sysplex	I-Operating_System
design	O
.	O
</s>
<s>
DCS/XCF	O
is	O
a	O
function	O
of	O
WAS	O
z/OS	B-Application
V7	O
that	O
moves	O
the	O
DCS	O
signaling	O
off	O
the	O
default	O
TCP/IP	O
transport	O
provider	O
and	O
to	O
the	O
XCF	O
signaling	O
facility	O
.	O
</s>
<s>
WebSphere	B-Language
Application	I-Language
Server	I-Language
for	I-Language
z/OS	I-Language
V8	O
introduced	O
the	O
ability	O
to	O
configure	O
application	O
server	O
behavior	O
down	O
to	O
the	O
request	O
level	O
,	O
rather	O
than	O
server	O
level	O
.	O
</s>
<s>
stalled_thread_dump_action	O
--	O
provides	O
the	O
action	O
WAS	O
z/OS	B-Application
will	O
take	O
when	O
a	O
timeout	O
has	O
occurred	O
and	O
a	O
thread	O
is	O
marked	O
as	O
stalled	O
.	O
</s>
<s>
cputimeused_dump_action	O
--	O
provides	O
the	O
action	O
WAS	O
z/OS	B-Application
will	O
take	O
when	O
a	O
CPU	O
time	O
used	O
limit	O
is	O
exceeded	O
.	O
</s>
<s>
dpm_dump_action	O
--	O
provides	O
the	O
action	O
WAS	O
z/OS	B-Application
will	O
take	O
every	O
dpm_interval	O
.	O
</s>
<s>
SMF_request_activity_enabled	O
--	O
enables	O
SMF	B-Language
recording	O
for	O
the	O
identified	O
request	O
.	O
</s>
<s>
SMF_request_activity_timestamps	O
--	O
enables	O
SMF	B-Language
timestamp	O
recording	O
for	O
the	O
identified	O
request	O
.	O
</s>
<s>
SMF_request_activity_security	O
--	O
enables	O
SMF	B-Language
security	O
detail	O
recording	O
for	O
the	O
identified	O
request	O
.	O
</s>
<s>
SMF_request_activity_CPU_detail	O
--	O
SMF	B-Language
CPU	O
detail	O
for	O
the	O
identified	O
request	O
.	O
</s>
<s>
WebSphere	B-Language
Application	I-Language
Server	I-Language
Version	O
8.5	O
was	O
announced	O
April	O
24	O
,	O
2012	O
.	O
</s>
<s>
Liberty	O
Profile	O
for	O
z/OS	B-Application
has	O
several	O
extensions	O
designed	O
to	O
take	O
advantage	O
of	O
specific	O
z/OS	B-Application
platform	O
functions	O
.	O
</s>
<s>
SAF	O
--	O
z/OS	B-Application
Security	O
Access	O
Facility	O
(	O
SAF	O
)	O
may	O
be	O
used	O
for	O
user	O
authentication	O
as	O
well	O
as	O
a	O
keystore	O
or	O
truststore	O
for	O
digital	O
certificates	O
.	O
</s>
<s>
WLM	O
--	O
z/OS	B-Application
Workload	O
Manager	O
(	O
WLM	O
)	O
may	O
be	O
used	O
to	O
classify	O
work	O
into	O
separate	O
WLM	O
enclaves	O
.	O
</s>
<s>
JDBC	O
Type	O
2	O
with	O
RRS	O
---	O
JDBC	O
Type	O
2	O
on	O
z/OS	B-Application
makes	O
use	O
of	O
a	O
cross-memory	O
connector	O
into	O
IBM	O
DB2	O
.	O
</s>
