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Get an overview of the Oracle Application Server 10g architecture, its functional components, the administrative tools for application development, and examples of commands that are used to perform frequent Application Server 10g administrative functions. This chapter is from the book, Oracle Application Server 10g Administration Handbook, by John Garmany and Donald K. Burleson (McGraw-Hill/Osborne, ISBN: 0072229586, 2004).

TABLE OF CONTENTS:
  1. Oracle Application Server 10g Architecture and Administration
  2. Hardware Architecture of Application Server 10g
  3. Client Tier, Web Tier, OHS, and Web Cache
  4. App Server Tier, Partitioning
  5. Application Server 10g Clusters and Farms and Database Tier
  6. Application Server Discoverer
  7. Oracle Application Server Wireless
  8. Single Sign-On (SSO)
  9. Oracle Application Server 10g Administration
  10. Command-Line Interfaces or OEM?
  11. Instance Manager Home Page
  12. Category Command Usage Table
  13. Command Line Interface and Scripts
  14. EM Commands with emctl
  15. Managing Application Server 10gwith dcmctl
  16. Miscellaneous Application Server 10g Commands and Sumary
By: McGraw-Hill/Osborne
Rating: starstarstarstarstar / 66
July 13, 2004

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TOOLS YOU CAN USE

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Instance Manager is somewhat of a misnomer. To Oracle DBAs, an instance is a running Oracle Database, while to Application Server 10g administrators, an instance refers to a J2EE app server or an infrastructure within their Application Server 10g farm.

For each instance, the Instance Manager page allows you to manage all of the Application Server 10g components. When you select a server from the OEM Farm page, you get the Instance Manager page with details on all components on that server (Figure 1-14). The top of the page displays the host name and status of the server. You also see CPU and RAM memory usage for the server. The bottom half of the page shows all of the Application Server 10g components on that server.

10g

For each component, you see the current status (up or down), the start time for the component, and the relative amount of CPU and RAM usage for each component. By selecting a component and clicking the management buttons, you can start, stop, enable, disable, and configure each component on the instance. Letís take a look at the links on this page.

  • Infrastructure button -- The Infrastructure link allows you to associate Application Server (ďinstancesĒ) components with database schemas. This includes associating a component to a schema in a database that is not in the farmís infrastructure. This allows you to share schemas across instances that do not belong to a particular farm.

  • Logs button -- On the top right of this page, you can click the Logs link to see all of the log files for each component.

  • J2EE deployment button -- In the Home tab, you can click J2EE Applications to see a list of all J2EE applications that are deployed on this server.

  • Ports button -- This link displays the port numbers for each server component and allows you to change the port number for any component on the instance (server).

Managing Application Server 10g with Command-Line Interfaces

Many experienced Application Server 10g administrators prefer to use the command-line interfaces instead of EM. Remember, at the lowest level, EM generates the commands and parameters for Application Server 10g control files, and knowledgeable administrators already know the commands and parameters.

The command-line interfaces are spread across many file locations, and you will find Application Server 10g command-line programs in the following directories on your operating system:

$ORACLE_HOME/bin/

$ORACLE_HOME/dcm/bin/

$ORACLE_HOME/j2ee/home/

$ORACLE_HOME/ldap/bin/

$ORACLE_HOME/ldap/odi/admin/

$ORACLE_HOME/oca/bin/

$ORACLE_HOME/opmn/bin/

$ORACLE_HOME/portal/admin/plsql/sso/

$ORACLE_HOME/sso/lib/

$ORACLE_HOME/uddi/lib/

$ORACLE_HOME/upgrade/

$ORACLE_HOME/wireless/bin/

NOTE: To locate all of the command-line programs, you should always include the preceding directories in your $PATH variable. In UNIX, you can place in your .profile the ksh command (if you are using the Korn shell) or the csh command (if using the C shell).

The Oracle command-line utilities will be mentioned throughout this text, but letís just take a quick tour so you can see how they are used to manage Application Server 10g. Table 1-1 shows all 59 of the command-line executables with Application Server 10g.

This chapter is from Oracle Application Server 10g Administration Handbook, by Garmany and Burleson. (McGraw-Hill/Osborne, 2004, ISBN: 0072229586). Check it out at your favorite bookstore today. Buy this book now.



 
 
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