8-Basic Oracle Net Server Side Configuration

8-Basic Oracle Net Server Side Configuration - Basic Oracle...

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1 1 Basic Oracle Net Server Side Configuration Presenter Tathagata Bhattacharjee
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 2 Objectives After completing this lesson, you should be able to do the following: Identify how the listener responds to incoming connections Describe Dynamic Service Registration Configure the listener by using Oracle Net Manager Control the listener by using the Listener Control Utility (lsnrctl) Configure the listener for HTTP
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 3 Server The Listener Process Client Listener sqlnet.ora listener.ora tnsnames.ora sqlnet.ora
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 4 Characteristics of the Listener Process The database server receives an initial connection from a client application through the listener The listener is a process on a node that listens for incoming connections on behalf of a database or a number of databases.
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 5 The following are the characters of a listener A listener can listen for more than one database Multiple listeners can listen on behalf of a single database to perform load balancing The default name of the listener in Oracle Net is LISTENER The listener can listen for multiple protocols
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 6 Oracle9i database requires an Oracle9i Listener. Previous versions of listeners are not supported. It is possible to use an Oracle9i listener with database created with an earlier version of Oracle
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 7 Connection Methods When a connection request is made by a client to a server, the listener performs one of the following Spawns (generates) a server process and bequeaths (passes) the connection to it Hands off the connection to a dispatcher in an Oracle Shared Server configuration Redirects the connection to a dispatcher or server process
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 8 Spawn and Bequeath The listener passes or bequeaths the connection to a spawned process This method is used in a dedicated server configuration only
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 9 Direct Hand-Off The listener will hand off a connection to a dispatcher when an Oracle Shared Server is used This method is not possible with dedicated server processes
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 10 Redirected (Message) A connection may be redirected by the listener to a dispatcher if a shared server is used
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 11 Spawn and Bequeath and Direct Hand-Off Connections Server Spawned Server Process Listener Client 4 1 2 3 5
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Basic Oracle Net Server Side Configuration Tathagata Bhattacharjee 12 The listener may spawn dedicated server processes as connection requests are received and bequeath (pass) the connection to the server processes.
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8-Basic Oracle Net Server Side Configuration - Basic Oracle...

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