WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

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Intelligent runtime provisioning The new intelligent runtime provisioning function is disabled by default. You might want to enable it in the Integrated Solutions Console to reduce the startup time and resource consumption. Improvements in the startup time of up to 10-15% can be seen. For more information about intelligent runtime provisioning see 3.1.14, “Intelligent runtime provisioning” on page 72. Workload profile setting WebSphere Application Server for z/OS V7.0 introduces a new value for the workload profile setting in the Object Request Broker (ORB) services advanced settings. It is now possible to make a user defined selection for the number of threads, using the CUSTOM setting. To change the value through the Integrated Solutions Console, click Servers → Server Types → WebSphere application servers → your_server → Container services → ORB service → z/OS additional settings. Table 14-6 lists all possible values. Table 14-6 Workload Profile settings for z/OS ORB service Value # Threads Description ISOLATE 1 Specifies that the servants are restricted to a single application thread. Use ISOLATE to ensure that concurrently dispatched applications do not run in the same servant. Two requests processed in the same servant could cause one request to corrupt another. IOBOUND MIN(30, MAX(5,(Number of CPUs*3))) CPUBOUND MAX((Number of CPUs-1),3) Specifies more threads in applications that perform I/O-intensive processing on the z/OS operating system. The calculation of the thread number is based on the number of CPUs. IOBOUND is used by most applications that have a balance of CPU intensive and remote operation calls. A gateway or protocol converter are two examples of applications that use the IOBOUND profile. Specifies that the application performs processor-intensive operations on the z/OS operating system, and therefore would not benefit from more threads than the number of CPUs. The calculation of the thread number is based on the number of CPUs. Use the CPUBOUND profile setting in CPU intensive applications, like XML parsing and XML document construction, where the vast majority of the application response time is spent using the CPU. 468 WebSphere Application Server V7.0: Concepts, Planning, and Design
Value # Threads Description LONGWAIT 40 Specifies more threads than IOBOUND for application processing. LONGWAIT spends most of its time waiting for network or remote operations to complete. Use this setting when the application makes frequent calls to another application system, like CICS screen scraper applications, but does not do much of its own processing. CUSTOM User defined Specifies that the number of servant application threads is determined by the value that is specified for the servant_region_custom_thread_count server custom property. The minimum number of application threads that can be defined for this custom property is 1; the maximum number of application threads that can be specified is 100. 14.9.3 Java settings Addressing mode The Addressing Mode (AMODE) is a JCL parameter, introduced with version 6.1, used in the START command to determine whether the server shall be started in 64-bit or 31-bit mode. The AMODE parameter is still supported in V7.0. It is suggested not to modify the default value. In the generated procedures during the installation, the value 00 is default. This means that the value defined inside the application server’s XML files is used for the decision of running 64 or 31-bit mode. If you start the server with for example AMODE=64 and the XML files reflect a 31-bit installation (or through versa), then the server will not start. Note: We suggest using the default value for the AMODE (AMODE=00) in the startup JCL for the WebSphere Application Server components.Double-check your automation settings. The settings described here are JVM settings that cannot be directly modified by the WebSphere Application Server V7.0. However, servers will use these underlying techniques. For detailed information about the topics presented in this section, go to the Diagnostics Guide for the JVM V6, found at the following Web page: http://publib.boulder.ibm.com/infocenter/javasdk/v6r0/index.jsp Chapter 14. WebSphere Application Server for z/OS 469
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WebSphere Application Server V7.0:
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Note: Before using this information
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2.2 Tivoli Directory Server . . . .
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5.1.3 Security . . . . . . . . . .
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7.9 WebSphere performance tools . .
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11.4 Web services architecture . .
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14.9.7 Java Command Language (JACL)
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xiv WebSphere Application Server V7
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Trademarks IBM, the IBM logo, and i
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xviii WebSphere Application Server
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Tze Puah is an Application Infrastr
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Become a published author Join us f
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1.1 Java Platform Enterprise Editio
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1.2 WebSphere Application Server ov
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1.2.2 Evolving Java application dev
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Runtime provisioning WebSphere Appl
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WebSphere Application Server suppor
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Installation Factory WebSphere Appl
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WebSphere Application Server for z/
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These features become more importan
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1.4 Supported hardware, platforms,
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Operating systems Versions Linux®
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1.4.5 Directory servers Databases V
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► Product binaries and source cod
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Some of the features of Rational Ap
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Groovy and PHP. It also includes ap
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2.1 Tivoli Access Manager IBM Tivol
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All communication between the Tivol
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LDAP is a fast and simple way of lo
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For WebSphere Application Server Ve
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WebSphere MQ applications can send
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► Technology Adapters These adapt
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The IBM WebSphere DataPower SOA App
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Client or Server Internet IP Firewa
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2.6 DB2 IBM DB2 is an open-standard
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2.7.1 Integration with WebSphere Ap
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50 WebSphere Application Server V7.
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3.1 WebSphere Application Server co
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Administration is greatly enhanced
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About Figure 3-2 : This figure only
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It is also possible to replicate se
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DMgr Node Deployment Manager Node A
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3.1.6 Deployment manager Local conf
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3.1.8 Job manager The administrativ
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Web server plug-ins A Web server ca
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SIP proxy The SIP proxy design is b
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3.1.11 Generic servers A generic se
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► Aligns WebSphere applications c
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3.2.1 Single cell configurations Yo
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Node Agent Application Server Deplo
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Node Agent V5.1 Application Server
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Administrative Agent WebSphere Appl
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Cluster workload management Workloa
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groups enables WebSphere Applicatio
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Mixed topologies Figure 3-23 shows
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3.4 Runtime processes In this secti
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Node Agent Application Server Deplo
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3.5.3 IBM HTTP Server as an unmanag
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4.1 Infrastructure planning This se
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4.2.1 Scalability Scalability, as u
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4.2.2 Caching 6. Reevaluate. Recogn
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- Consider regular maintenance. In
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4.2.6 Security Disaster recovery co
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► Plan for certificates and their
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4.3 Sizing the infrastructure After
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When using a service such as those
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4.5.4 Load factors ► Monitor reso
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4.5.5 Production system tuning This
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4.6 Planning for monitoring As most
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products, like the IBM Tivoli Compo
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4.7.3 Backup plan 4.7.4 Recovery pl
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120 WebSphere Application Server V7
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5.1 Topology selection criteria 5.1
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Load balancing Use load balancing t
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5.1.3 Security 5.1.4 Maintainabilit
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Scaling Scaling represents the abil
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Both of these options are valid app
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- You will more likely have to call
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5.2 Terminology 5.2.1 Load balancer
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WebSphere Application Server Proxy
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WebSphere Application Server V7.0 s
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5.3.1 Stand-alone server topology T
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► Increased security by using a D
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User Outside World DMZ Internal Net
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Installation and configuration The
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The Web server plug-in distributes
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System D Perform the following step
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primary Load Balancer through heart
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5.3.4 Reverse proxy topology User R
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Installation and configuration: Edg
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System B Perform the following step
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System A 1. Copy the file targetTre
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Note: Each Load Balancer installati
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Disadvantages The major disadvantag
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5.3.6 Heterogeneous cell z/OS DMGR
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Disadvantages The disadvantages of
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Advantages This topology provides t
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The topology in Figure 5-11 shows a
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3. Create an application server pro
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Disadvantages There are no real dis
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This document does not describe the
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When you choose the platform or pla
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6.5 Naming conventions Naming conve
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Forwarding method Each of the avail
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The following examples outline the
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What is next? You can start the Web
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Assume that the application server
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6.8.2 Distributed server environmen
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Assume that the application server
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► Slip install Slip install means
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Deployment Manager . . . Deployment
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Installation factory The Installati
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Note: The IBM Update Installer for
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Profile types The types of profiles
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► Secure proxy profile A secure p
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Deployment manager profile options
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Typical settings Advanced options D
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Application server profile options
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Typical settings Advanced options Y
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Typical settings Advanced options D
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6.9.6 Naming convention The purpose
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If each application server will hos
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There are some specific considerati
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6.10 IBM Support Assistant IBM Supp
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7.1 What is new in V7.0 IBM WebSphe
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7.2.1 Scaling overview Note: In ord
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Note: IBM HTTP Server for z/OS offe
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7.3.2 System tuning To measure the
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For the DMZ secure proxy, there are
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Messaging connection pool When usin
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Workload management is a WebSphere
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For more details about Web server p
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7.5 High availability 7.5.1 Overvie
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7.5.4 Data availability In a WebSph
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7.5.6 Maintainability Software-base
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This time-out can be configured in
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High availability groups High avail
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7.6.1 Edge caching In this section
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7.6.3 Data caching Dynamic caching
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7.7 Session management 7.7.1 Overvi
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The following sections outline the
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Local sessions (non-persistent) If
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► Application Configuration at th
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7.9 WebSphere performance tools Whe
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Monitoring a system naturally chang
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for tuning and performance. The adv
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synthetic transactions or to track
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For more information about ARM, rev
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Planning item Plan for clustering:
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8.1 What is new in V7.0 The followi
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► Enterprise JavaBeans (EJB) thin
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Disciplines Business Modeling Requi
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► Support for WebSphere Applicati
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The WebSphere rapid deployment set
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To group and sort resources in the
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8.5.3 Subversion CVS has the follow
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8.6 Automated build process The maj
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8.8 Automated functional tests Auto
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Development environment Usually, ea
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The system test environment can als
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► Environment-specific This categ
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A lesser known, but better, approac
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Developers need to consider the fol
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► You can use the WebSphere Appli
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9.1 What is new in V7.0 The followi
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9.2 Administrative security We sugg
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9.3.1 Integrated Solutions Console
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JMX, a Java specification part of J
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9.4 Automation planning To emphasiz
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Consider whether to use automatic s
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Some thought needs to be put toward
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Note: A common source of confusion
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File synchronization File synchroni
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9.7.1 Log and traces ► Check the
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9.7.3 Backing up and restoring the
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9.8 Planning checklist for system m
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10.1 Messaging overview: What is me
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10.3.1 Messaging provider standards
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► WebSphere Application Server V5
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If the bus member is a cluster of a
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10.4.2 Choosing a messaging topolog
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With some additional configuration,
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Figure 10-6 illustrates how a servi
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WebSphere MQ server provides the fo
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Other roles that affect permissions
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There is a trade-off between reliab
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11.1 Introduction to Web services W
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11.2.1 What was in Feature Pack for
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► Do you need to promote your bus
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Before we look at the architecture
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Message exchange patterns Some tran
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Workflow-oriented A workflow messag
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Service Consumer Figure 11-8 Compos
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11.5.1 Supported standards WebSpher
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In this type of situation, companie
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Note: Dynamic Caching is only inclu
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12.1 What is new in V7.0 This secti
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Security policy A security policy i
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These components consist of the fol
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The authentication mechanism in Web
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There are some benefits in using Ke
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Lightweight Directory Access Protoc
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12.2.2 Authorization Trust associat
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Fine-grained administrative securit
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that is involved in an Internet tra
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Users Fred Sally Mike Figure 12-4 U
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Note: Be aware that some configurat
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WebSphere Application Server provid
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Scenario 3: Using a z/OS security p
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Resources For a good overall refere
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13.1 Available feature packs The cu
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The included extensions to Ajax are
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Another good source of information
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Figure 13-2 Key SCA concepts ► Pr
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► SCA Web Services Binding V1.0 T
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Page 528 and 529: Advantages Disadvantages Sample top
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Figure A-10 Additional parameters F
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Figure A-14 Job finished Summary We
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Online resources ► WebSphere Appl
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WebSphere Application Server V7.0:
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