638 WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile
Extended Dynamic Cache Monitor brings the following enhancements to the monitoring
capabilities:
Display the contents of object cache instances
Display the Dynamic Cache Mbean statistics for cache instances across all members of a
cluster
Look at the push-pull table associated with a cache instance
Search memory contents, disk contents, and the push-pull table for cache IDs using a
regular expression
Compare cache instances
For more information about installing the Dynamic Cache Monitor, go to the following website:
http://publib.boulder.ibm.com/infocenter/wasinfo/v6r1/topic/com.ibm.websphere.expr
ess.doc/info/exp/ae/tdyn_servletmonitor.html
For more information about installing Extended Dynamic Cache Monitor, go to the following
website:
http://www.ibm.com/developerworks/websphere/downloads/cache_monitor.html
17.12 Using WebSphere for z/OS Optimized Local Adapters
This section describes how to optimize local adapters. This feature is a high-performance
connectivity feature that is specific to a z/OS system.
17.12.1 Introduction to Optimized Local Adapters
WebSphere for z/OS Optimized Local Adapters (WOLA) is a function introduced in
WebSphere Application Server V7.0.0.4 with IBM Information Management Support (IMS™)
support included in V7.0.0.12. It evolved from a local communications mechanism of the
daemon server that was present for local IIOP calls in WebSphere Application Server for
z/OS. Local communications routines are now externalized and programmatic APIs are
available together with a standard JCA adapter.
Chapter 17. Performance tuning 639
WOLA is an inbound and outbound method of local cross-memory communication between
WebSphere Application Server for z/OS and external address spaces, as shown in
Figure 17-28.
Figure 17-28 WOLA overview
As shown in Figure 17-28, WOLA communicates with the following external address spaces:
CICS regions
IMS regions
Batch programs
UNIX System Services processes
Airlines line control (ALCS) programs
The following supported languages can be used to invoke the callable services:
Cobol
C/C++
PL/I
High level assembler
WOLA represents a way to link WebSphere Application Server for z/OS and external address
spaces in a secure, optimized, high-speed, cross-memory, and bidirectional manner. WOLA
is a high throughput solution with a low impact per transaction or exchange.
However, because WOLA is a low-level, cross-memory exchange mechanism between the
daemon and specific WOLA-enabled control regions, it is limited to a single z/OS operating
system only. The daemon-owned shared space exchange control blocks reside above the
2 GB bar. External address space always registers with the local daemon through the
BBOA1REG call and provides target environment values together with registration name to
initiate communication.
The WOLA function is provided as a complement to currently offered solutions as a fast and
efficient way to invoke business logic and services inside WebSphere Application Server for
z/OS.
z/OS LPAR
CICS regions
IMS regions
Batch programs
Unix System Services
processes
ALCS regions
Daemon
CR
DMGR
CR
SR
SR
Daemon
CR
AppServer
CR
SR
SR
AppServer
CR
SR
SR
Exchange
control blocks
Owned by Daemon
2 GB bar
640 WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile
For more information about the WOLA feature, go to the following website:
http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP101490
17.12.2 Enabling WebSphere for z/OS Optimized Local Adapters
To enable WOLA support in WebSphere Application Server V8.5:
1. Use the copyZOS.sh script to off load WOLA modules from UNIX System Services, as
shown in Example 17-19. It automatically creates a 35-track load library with the name
specified on the script arguments.
Example 17-19 Using copyZOS to create symbolic links and to copy WOLA modules
/WAS_product_image_path/bin/copyZOS.sh OLAMODS YOUR.DESIRED.LOADLIB
2. Use the olaRar.py script to install the WOLA resource adapter and J2C connection factory,
as shown in Example 17-20. The cell scope WAS_DAEMON_ONLY_enable_adapter variable is
set during the process, and the configuration is validated and saved.
Example 17-20 Install WOLA adapter using the olaRAR.py script
${WAS_INSTALL_ROOT}/bin/wsadmin.sh -lang jython -f
/WAS_product_image_path/util/zos/OLASamples/olaRar.py bbocell bbonode
3. Click Environment WebSphere variables. Select All scopes, and verify the existence
of the WAS_DAEMON_ONLY_enable_adapter variable that covers your desired scope, as
shown in Figure 17-29.
Figure 17-29 New WAS_DAEMON_ONLY_enable_adapter variable in cell scope
Chapter 17. Performance tuning 641
4. Verify the existence of the new resource adapter on the desired scope, as shown in
Figure 17-30.
Figure 17-30 New OLA resource adapter
642 WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile
5. Verify the existence of the new J2C connection factory on the desired scope, as shown in
Figure 17-31.
Figure 17-31 New OLA J2C connection factory
6. Restart the WebSphere Application Server daemon. (This action also stops all of the
connected cell servers on the same z/OS LPAR.)
7. Verify the presence of the BBOMOOO1I message enable_adapter:1 during the daemon start.
For more information about enabling WOLA support in WebSphere Application Server, go to
the following website:
http://pic.dhe.ibm.com/infocenter/wasinfo/v8r5/index.jsp?topic=%2Fcom.ibm.webspher
e.zseries.doc%2Fae%2Ftdat_enableconnector.html
For WOLA samples, go to the following website:
http://pic.dhe.ibm.com/infocenter/wasinfo/v8r5/index.jsp?topic=%2Fcom.ibm.webspher
e.zseries.doc%2Fae%2Fcdat_olasamples.html
For information about enabling WOLA support in CICS, go to the following website:
http://pic.dhe.ibm.com/infocenter/wasinfo/v8r5/index.jsp?topic=%2Fcom.ibm.webspher
e.zseries.doc%2Fae%2Ftdat_enableconnectorcics.html
For information about enabling WOLA support in IMS, go to the following website:
http://pic.dhe.ibm.com/infocenter/wasinfo/v8r5/index.jsp?topic=%2Fcom.ibm.webspher
e.zseries.doc%2Fae%2Ftdat_enableconnectorims.htmll
For more information about using WOLA with ALCS, go to the following website:
http://www-01.ibm.com/software/htp/tpf/alcs/pubs/wassampl.pdf

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