OVERVIEW: What functions do the Intelligent Agent perform?
How does the Intelligent Agent do all that?
What are the major changes in the Agent with version
i?
How do I start and stop my
i Intelligent Agent?
What are the *
q files that I see in my Agent directory?
CERTIFICATION: Is the Agent supported on a system running DHCP?
Does the Agent require DNS resolution?
Does the Intelligent Agent work on Clustered Configurations?
INSTALLATION / CONFIGURATION: Which CD
ROM contains the Intelligent Agent?
Can I run multiple Agents on a single server?
What is the name of the Intelligent Agent executable and where is it located?
Can the Intelligent Agent function on a node that does not have an Oracle database installed?
Which database releases are compatible with the
i Agent?
Can I use the Intelligent Agent Release
i to gather data on a remote host?
Where does the Intelligent Agent put its necessary support files?
How is the Intelligent Agent configured?
Which Intelligent Agent releases support Oracle Enterprise Manager Release
i?
Which version of the Oracle Intelligent Agent should I use? Can I download required patches?
Can I upgrade the Intelligent Agent without upgrading the database? How do I do that?
Is it possible to upgrade to Intelligent Agent Release
i without having to re
submit existing jobs or events?
What version of TCL does the Intelligent Agent Release
i use?
Does Intelligent Agent
i work on a machine with multiple network interface cards(NICs)?
What permissions should be assigned to the dbsnmp executable and who should start the Agent?
How do I change the dbsnmp password and is this password secure?
I need to change the hostname on my system
How can I make sure my Agent gets updated?
In the past
I couldn
t discover multiple Listener
ora files
Is this still a problem?
Can I change the TCP port numbers used by the Agent and Data Collection Cartridge?
TROUBLESHOOTING: If my Agent doesn
t discover all the services running on my server
where do I start the troubleshooting the problem?
What is
Clean Starting
the Agent and how do I perform this operation?
How to do I activate logging and tracing for my
I Agent and Data Collection Cartridge?
In my dbsnmp
log file
I am finding an NMS
error that says I can
t connect to the SNMP Master Agent
Should I worry?
Does the DBSNMP database user pose a security problem?
What should I do if I see an error like
VNI
: Unable to contact the Agent
within the Enterprise Manager console?
Can I use the Remote Diagnostics Agent (RDA) to collect information for my Intelligent Agent
s configuration?
Questions with Answers OVERVIEW: What functions does the Intelligent Agent perform?
The Intelligent Agent provides the following core services:
Event management capabilities for the host machine
databases
listeners
concurrent managers
forms servers
Oracle HTTP listeners
etc
Job execution and scheduling capabilities on the host machine
databases
listeners
concurrent managers
forms servers
Oracle HTTP listeners
etc
Statistical data collection for the Performance Manager and Capacity Planner
Sending SNMP traps for events related to the database
listener or host
Back_to_Top
How does the Intelligent Agent do all that?
The Intelligent Agent makes extensive use of an extended version of the TCL programming language
All job and event scripts are written in TCL and have the ability to do anything TCL can do
See the TCL document for details
Data collection is performed by making calls to the operating system or by accessing data in a monitored database
Back_to_Top
What are the major changes in the Agent with version
i?
The major changes and new features in the
i Agent are:
Data Gatherer (ODG) functionality has been fully integrated into the Intelligent Agent
Thus
the ODG is no longer a separate process
A new control utility called
agentctl
has been introduced to start
stop
or check the status of the Agent
Upon startup
a single dbsnmp process is created on UNIX platforms
Administrators can suspend jobs
events and data collections on a target by using the Agent
s agentctl utility
Intelligent Agent Release
i is also redesigned to handle a large number of events at the same time
A new watchdog script runs in the background that restarts the Agent if it goes down
If the watchdog attempts to restart the Agent
information is written to the dbsnmp
nohup file (UNIX) and the Oracle<home>Agent
nohup file (Windows NT/
)
For details on the
i Intelligent Agent
please refer to the Oracle Intelligent Agent User
s Guide Release
i which is available as part of the Oracle Enterprise Manager documentation set
Back_to_Top
How do I start and stop my
i Intelligent Agent?
For the
i Agent on UNIX
a new Agent control utility called
agentctl
is used
The relevant agentctl commands are:
agentctl start agent
agentctl stop agent
agentctl status agent
agentctl restart agent (to stop and start the Agent using a single command)
On Windows NT
you can start and stop the Intelligent Agent service from the start menu: Start = Settings = Control Panel = NT Control Panel = Services screen
On Windows
you can start and stop the Agent Services: Go to Start menu = Settings = Control Panel = Administrative Tools = Services
Select the OracleAgent service
Right mouse click and select (start
stop
etc
)
To modify the Startup Type
right mouse click and select Properties and edit the Startup Type as needed
Back_to_Top
What are the *
q files that I see in my Agent directory?
The
q
files are state files maintained by the Agent
The files contain vital information about the jobs and events registered with the Agent
as well as authorized users and OMSs that have communicated with the Agent
The
q
files are encrypted and the hostname of the system is used as part of the encryption key
The Agent reads these files each time the dbsnmp process is started
If the files are missing
the Agent will create new ones during startup
The files are also updated each time a job / event is processed or a new request is received
Back_to_Top
CERTIFICATION Is the Agent supported on a system running DHCP?
Oracle does not recommend using DHCP as a method for obtaining and IP Address for systems running the Intelligent Agent
Depending on the how your DCHP is configured
you may be receiving a new IP Address each time the system is rebooted
The Intelligent Agent needs a static IP Address in order to maintain communication with the Management Server
You can setup DHCP such that the IP Address never expires for that system
but you will not be able to launch the EM Reports WebSite if it
s running on the same system
Back_to_Top
Does the Agent require DNS hostname resolution?
The Intelligent Agent does require DNS resolution for communication with the Management Server
The DNS resolution must also include an entry in the DNS reverse lookup tables (nslookup)
This depth of resolution was introduced d
From:http://tw.wingwit.com/Article/program/Oracle/201311/18343.html
