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Oracle Enterprise Manager Configuration Guide
Release 9.2.0

Part Number A96673-01
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1
Introduction

This chapter describes key concepts and requirements associated with deploying Oracle Enterprise Manager and its separately licensable Management Packs:

Product Architecture

Oracle Enterprise Manager is Oracle's single, integrated solution for administering and monitoring global enterprises. Enterprise Manager is based upon a lightweight, three-tier architecture that offers flexible deployment options, round-the-clock reliability, and unparalleled scalability.

The product's three-tier architecture is comprised of the following:

This architecture, which underlies the Enterprise Manager framework, is described in more detail below.

Figure 1-1 Three-Tier Architecture

Text description of three_ti.gif follows.

Text description of the illustration three_ti.gif

First Tier: Centralized Consoles

The primary responsibility of first-tier Enterprise Manager clients is to present the user interface to administrators for all their management tasks.

Depending on what has been installed and licensed, first tier clients could consist of the following components:


Note:

Beginning with Release 9.0, Oracle DBA Studio functionality has been fully integrated within the Console.





Note:

Oracle Management Pack for SAP R/3 is available on its own CD-ROM in your CD Pack; it is not installed with the database.




The Oracle Enterprise Manager Console is designed to reduce the complexity of managing your Oracle Database Server, as well as the network components, software, and hardware that support the database.

Because these first-tier Consoles and applications depend upon the second-tier Management Server(s) for the bulk of their application logic, these clients are able to run without the overhead and processing burden of housing critical management services.

Second Tier: Central, Scalable and Reliable Oracle Management Servers

The second-tier component of Oracle Enterprise Manager, the Management Server, is the framework engine. The Management Server maintains centralized intelligence and distributed control between clients and managed nodes. It is responsible for all back-end application logic and critical services (i.e. event system, paging and e-mail notifications, reporting, job system, etc.) for maintaining an enterprise.

This middle tier processes requests from first-tier clients, stores the information in a database repository, and distributes tasks for third-tier Intelligent Agents to perform.

The repository also serves as a persistent back-end store where it maintains system data, application data, and the state of managed targets distributed throughout the environment. Data stored in the repository can be shared between any number of administrators accessing one or more Management Servers connected to a single repository.

Third Tier: Managed Targets and Autonomous Intelligent Agents

The third tier in the Enterprise Manager framework consists of managed targets and Intelligent Agents. Managed targets, which can include nodes, databases, web servers, application servers, applications, and others, rely on Intelligent Agents to execute tasks given by the Management Server. Once tasks are assigned, autonomous Intelligent Agents will perform the work as scheduled regardless of the state of the managed targets, Management Server, or clients. Examples of such tasks include executing SQL scripts, monitoring available space in a tablespace, performing weekly database backups, monitoring the real-time database physical I/O rate, or monitoring the availability of the application server.

Architectural Extensibility

To offer vital framework functionality the Enterprise Manager architecture can be easily extended on each tier. The first tier allows any number of clients to access one or more second-tier Management Servers. Deploying additional Management Servers provides increased scalability and reliability as well as a choice between grouping the Management Servers together with one repository or dividing them into smaller sets, each set with its own repository. The former configuration allows all administrators to share data contained in the single repository, while the latter offers autonomous units which never interact with each other. Lastly, the number of third-tier managed services and Intelligent Agents can increase with business demands.

Figure 1-2 Architectural Extensibility

Text description of extensib.gif follows.

Text description of the illustration extensib.gif

Across all three-tiers, the Enterprise Manager architecture establishes the foundation for the robust Enterprise Manager framework.

Deployment Options

Enterprise Manager's three tier architecture enables the highest level of reliability and scalability. However, not all enterprises need to implement Enterprise Manager as a three tier system. That is, not all businesses need to deploy each of the three tiers, nor need all companies deploy each tier on a separate machine. Because of the flexibility of Enterprise Manager's architecture, many deployment options are available.

Figure 1-3 Deployment Options

Text description of dbconnec.gif follows.

Text description of the illustration dbconnec.gif

Through analyzing your environment, determining your general administrative needs, and careful planning, you can effectively choose the deployment option best suited for your enterprise.

Available deployment options are described in this section.

Client/Server Deployment

A client/server deployment is one where only the Console and management applications are deployed. Neither the middle tier Management Server nor the Intelligent Agent are installed and used. In this standalone configuration, the client connects directly to the managed target and performs administration tasks.

You should use this type of deployment model if the following conditions apply:

Three Tier Deployment

A three tier deployment involves the installation and configuration of the entire Enterprise Manager framework: Console, Management Server/Repository, and Intelligent Agent.

You should use this type of deployment model when you require the following features:

For optimal performance with a three tier deployment of Enterprise Manager, follow these guidelines:


Note:

For information on defining Management Regions, a feature introduced with Enterprise Manager release 9i, see the Oracle Enterprise Manager Administrator's Guide.




Certifications

Regardless of the deployment method selected, the following operating system certifications apply to the various components of Oracle Enterprise Manager Release 9.2.0:

Table 1-1 Operating System Support
Console Integrated Applications1 Management Packs2 Management Pack for SAP R/3 Management Server Intelligent Agent3 Paging Server

Windows NT 4.0 with Service Pack 6a, includes:

Workstation Server

Enterprise Edition Terminal Server

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Windows 2000 with Service Pack 2, includes4:

Professional Server

Advanced Server

Terminal Server

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Windows 98 First Edition

Yes

Yes

Yes

Yes

No

No

No

Windows XP Professional

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Sun SPARC Solaris 2.6, 2.7, 2.8

Yes

Yes

Yes

No

Yes

Yes

No

HP-UX 64-bit 11.0

Yes

Yes

Yes

No

Yes

Yes

No

IBM AIX 64-bit 4.3.3 & 5.1

Yes

Yes

Yes

No

Yes

Yes

No

Compaq Tru64 5.1 & 5.1a

Yes

Yes

Yes

No

Yes

Yes

No

Intel Linux 32-bit SLES7, Kernel 2.4.7, glibc 2.2.2

Yes

Yes

Yes

No

Yes

Yes

No



1 Integrated applications for Release 9i include the following: Oracle Forms Server Manager, Oracle Policy Manager, Oracle Directory Manager, Oracle Net Manager, Oracle Spatial Index Advisor, Oracle Data Guard Manager, Oracle LogMiner Viewer, Oracle Text Manager, and Oracle Enterprise Security Manager.

2 Management Packs include the Diagnostics Pack, Tuning Pack, Change Management Pack, and Management Pack for Oracle Applications.

3 The Intelligent Agent runs on the same Operating Systems as the RDBMS. Also, the Intelligent Agent is certified with the Active Directory shipped with Windows 2000.

4 Windows 2000 Datacenter is not a certified/supported operating system for any Enterprise Manager Oracle9i component.


Note:

For platform-specific details, refer to the given platform's release notes.




If you choose to run Enterprise Manager from a browser, then the following certifications also apply.

Table 1-2 Operating System Support for Web-Enabled Enterprise Manager
Windows NT 4.0 with Service Pack 6a Windows 2000 with Service Pack 2 Windows XP Windows 98 Sun SPARC Solaris 2.6, 2.7, 2.8

Thin Client (Oracle HTTP Server 1.3.22)

Yes

Yes

Yes

Yes

No

Apache 1.3.9 and higher

Yes

Yes

Yes

No

Yes

Microsoft Internet Information Server (IIS) 4.0 and higher1

Yes

Yes

Yes

No

No

Netscape Navigator® 4.7 and higher

Yes

Yes

Yes

Yes

No

Microsoft® Internet Explorer 5.0 and higher

Yes

Yes

Yes

Yes

No

Web Site

Yes

Yes

Yes

No

No



1 Microsoft Internet Information Server (IIS) 6.0 is the only Microsoft Internet Information Server available for Windows XP.


Note:

Thin Client in the above table refers to the Console; all integrated applications; Enterprise Security Manager; the entire Change Management Pack; Performance Manager, Lock Monitor, Performance Overview, Top SQL, and Top Sessions of the Diagnostics Pack; and Tablespace Map, Reorg Wizard, Outline Manager, and Graphical Explain Plan of the Tuning Pack.




System and Hardware Requirements

After determining how to deploy Enterprise Manager and verifying certifications, ensure that the following system and hardware requirements are satisfied prior to installation and configuration.


Note:

Hard disk space requirements for FAT Windows-based operating systems could be as much as four times those indicated below.




For hardware and system requirements for other platforms (for example, HP-UX and others) refer to the corresponding installation guides.

Oracle Enterprise Manager Client

Requirements are listed below for a machine running only the Enterprise Manager Client (Console, Management Packs and integrated applications):

Table 1-3 Console, Management Packs, and Integrated Applications
Minimal Recommended

Available Hard Disk Space

625 MB

N/A

Processor and RAM

Pentium 166 MHz with 128 MB RAM

or

SPARC 20 166 MHz with 128 MB RAM

Pentium 266 MHz with 256 MB RAM

or

SPARC Ultra 1 266 MHz with 256 MB RAM




Note:

Processor and RAM requirements identified above are applicable to both an installed Enterprise Manager Client as well as to a thin, web-based Client.




Management Server or Management Server and Client

Requirements are listed below for a machine running only the Management Server Release or for an Oracle Management Server machine which also runs the Enterprise Manager Client.

The requirements assume that a database for the database Repository already exists. If a database has not already been installed, you must install one. For recommended system and hardware requirements for an Oracle database, refer to the installation guide provided with that database release.

Table 1-4 Management Server or Management Server and Client
Minimal Recommended

Available Hard Disk Space

730 MB

N/A

Processor and RAM

Pentium III 866 MHz with 128 MB RAM

or

SPARC Ultra 1 266 MHz with 256 MB RAM

Pentium III 1GHz with 256 MB RAM

or

SPARC Ultra 1 300 MHz with 512 MB RAM



Enterprise Manager Web Site

Requirements are listed below for a machine running only the Enterprise Manager Web Site (which also includes the preconfigured Oracle HTTP Server):

Table 1-5 Enterprise Manager Web Site
Minimal Recommended

Available Hard Disk Space

820 MB

N/A

Processor and RAM

depends upon webserver

depends upon webserver



Java Runtime Environment (JRE)

Enterprise Manager has been certified on the following versions of the Java Runtime Environment (JRE):

Version Compatibility

The following matrix shows version compatibility between different Enterprise Manager components.

Table 1-6 Enterprise Manager - Intelligent Agent - Database Compatibility Matrix
Enterprise Manager Release... supports creation of its repository in Database Releases... and is supported by Intelligent Agent Releases... and manages Database Releases...

9.2.0

9.2.x

9.0.1.x

8.1.7.x

9.2.x

9.0.1.x

8.1.7.x

9.2.x

9.0.1.x

8.1.7.x

9.0.1

9.0.1.x

8.1.7.x See Note 1 and Note 2

8.1.6.x See Note 1 and Note 2

8.0.6.x

9.0.1.x

8.1.7.x

8.1.6.x

8.0.6.x

9.0.1.x

8.1.7.x

8.1.6.x

8.0.6.x

2.2.x

8.1.7.x

8.1.6.x

8.0.6.x

7.3.4.x

8.1.7.x

8.1.6.x

8.1.5.x

8.0.6.x

7.3.4.x

8.1.7.x

8.1.6.x

8.1.5.x

8.0.6.x

7.3.4.x

2.1.x

8.1.6.x

8.1.5.x

8.0.6.x

8.0.5.x

8.0.4.x

7.3.4.x

8.1.6.x

8.1.5.x

8.0.x

7.3.4.x

8.1.6.x

8.1.5.x

8.0.x

7.3.4.x

2.0.x

8.1.5.x

8.0.5.x

8.0.4.x

7.3.x

8.1.5.x

8.0.6.x

8.0.5.x

7.3.4.x

8.1.5

8.0.x

7.3.x

1.6.5.x

8.0.6.x

8.0.5.x

7.3.4.x

8.0.6.x

8.0.5.x

7.3.4.x

8.0.6

8.0.5.x

8.0.4.x

8.0.3.x

7.3.x



When creating your repository you should choose a database that is always available; will not be shutdown by other administrators, and does not compete for resources on the machine where it is running. Furthermore, Enterprise Manager's release 9i repository has been certified to reside in the following Oracle database releases (see Note 1):

Note 1

If your 9.2 repository is in database release 8.1.7.0 or 8.1.7.1, be aware that database base bug 1393049, which causes some SQL queries to return incorrect results, may affect Enterprise Manager in a variety of ways.

For example, the aforementioned database bug may manifest itself through Enterprise Manager via incorrect lists of events or jobs in history; incorrect list of event alerts; incorrect list of active jobs, invalid notifications being sent, and others.

To fix the problem, refer to the table below:

Table 1-7 Fixes for the Repository
If Repository Resides in Database Release Then Fix the Problem by

8.1.7.0 for all operating systems

Upgrading your database to release 8.1.7.2

8.1.7.1 for all operating systems

Upgrading your database to release 8.1.7.2

or

Apply one-off patch for bug 1765292



To avoid these known database problems entirely, Oracle recommends that you create your repository in Enterprise Edition or standard edition release 9.2, Enterprise Edition or standard edition release 9.0.1, or Enterprise Edition or standard edition release 8.1.7.2 or 8.1.7.1 (Sun SPARC Solaris only).

Note 2

If your repository is in database release 8.1.7.x for any operating system, Oracle recommends that you apply the patch for bug 1733170. Failure to apply this patch may result in intermittent Management Server faults due to segmentation violations.


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