Grid Technology
Overview
Grid computing combines computers from multiple
administrative domains to reach a common goal, to solve a single task and may
then disappear just as quickly.
One of the main strategies of grid computing is to use
middleware to divide and apportion pieces of a program among several computers,
sometimes up to many thousands. Grid computing involves computation in a
distributed fashion, which may also involve the aggregation of large-scale
cluster computing-based systems.
Oracle Enterprise
Manager Grid Control
For managing lots of databases and application servers
(according to Oracle Corporation, preferably in a grid solution) one could use
the Oracle Enterprise Manager Grid Control. It can manage multiple instances of
Oracle deployment platforms; the most recent edition also allows for management
and monitoring of other platforms such as Microsoft .NET, Microsoft SQL Server,
NetApp Filers, BEA weblogic and others. Partners and IT organizations can build
extensions to Oracle Enterprise Manager, and make them available to other
Enterprise Manager users via Oracle Enterprise Manager 10g Grid Control
Extensions Exchange. System monitoring:
Enterprise Manager provides comprehensive, flexible,
easy-to-use monitoring functionality that supports the timely detection and
notification of impending IT problems to the intended users. It offers the most
comprehensive monitoring from Oracle Database instances to Oracle Real
Application Clusters to Oracle Application Server Farms and Clusters. OEM Grid
Control comes with a comprehensive set of performance and health metrics that
allow monitoring of key components in your environment such as applications,
application servers, databases, as well as the back-end components on which
they rely, such as hosts, operating systems and storage.
The architecture of the OEM for Grid Control has three
distinct components:
- the collection agent (Oracle Management Agent or OMA)
- the aggregation agent (Oracle Management Server or OMS)
- the repository agent (Oracle Management Repository or OMR)
The OMA runs on the target host and collects information on
the hardware, operating system, and applications that run on the target. The
OMS runs on one or two servers and collects the data generated by the OMAs. The
OMS pulls the information from the OMAs and aggregates the collections into the
repository. The OMS also acts as the user-interface — by generating web-pages
for database administrators to view the status of systems and services. The OMR
comprises an instance of the Oracle database that stores the data collected by
the OMS. Installers can make the OMR highly available or fault-tolerant by
running it on an Oracle RAC instance across multiple nodes.
Key features of OEM Grid Control:
System Monitoring
Managing Groups
Job System
Information Publisher
Compliance Management
Extending Enterprise Manager
Managing Targets
Before starting to install the Oracle Grid you need to
download from the below mention link.
Oracle Grid 11.1.0.1.0
Kindly extract the three files into the same folders. if not
then you will face the error (figure 1.5)
I assume, you have already installed the below mention
items.
Oracle Database (11g R2)
Oracle Weblogic Server. (10.3.2) this version of Weblogic
server is compatible with 11g Grid. otherwise you have faced error (figure 1.4)
If not installed, then please go through with the below
mention links.
Some important prerequisites need to be check before
installing Oracle Grid 11g (11.1.0.1.0)
- Partitioning option is installed in the database. Otherwise error (figure 1.0)
- After installing Oracle 11g Database you need to deactivate the DB control using the below mention command. Otherwise error (figure 1.1)
emca -deconfig dbcontrol db
-repos drop
- Alter the value of session_cached_cursors must be equal to or greater than 200. otherwise error (figure 1.2)
- Alter the value of log_buffer must be equal to or greater than 10485760.
- Alter the value of processes must be equal to or greater than 500.
- Alter the tablespace size atleast 200 MB. otherwise (figure 1.3)
After applying the above mention changes then you restart
the database.
Now we are ready to install the Oracle Grid 11g.
Click on the setup file.
Remove check box and click Next.
Click Yes.
Click Next.
Click on first radio box and click Next
Click Ignore All and click Next.
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| Figure 1.4 |
Check the prerequisite and click Next
Enter Username and Password and click Next
Enter Connection string and click Next
 |
| Figure 1.0 |
 |
| Figure 1.1 |
 |
| Figure 1.2 |
 |
| Figure 1.3 |
Enter SYSMAN password and click Next
Enter Registration password and click Next
Check the ports and click Next.
Click Install.
 |
| Figure 1.5 |
Click Install.
Installation is in process.
Configuration is in process.
Installation & Configuration completed.
Weblogic running on Oracle 11g Grid Control.
If you have any query, feel free to ask.
Lot more to come…………….
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