connecting to remote db from unix script Post: 302135155

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Top Forums Shell Programming and Scripting connecting to remote db from unix script Post 302135155 by robotronic on Thursday 6th of September 2007 07:33:13 AM

09-06-2007

Registered User

MTS are Multi-Threaded Servers, also called Shared Servers. It's an option you can configure on the db server (only if you really need it).

Usually, if MTS are not configured, your client contacts the remote listener, which spawns a Dedicated Server Process on an assigned port and puts in communication your user process with the server process. At this point the listener has finished its work and your client is in direct contact with a dedicated process (oracle<$SID>) on a dedicated port which serves only your session.

If you configure MTS on the server-side, instead, new processes are involved in the connection mechanism. First, at the instance startup, are spawned one or more Dispatcher Processes (ora_dNNN) and one or more Shared Server Processes (ora_sNNN). In this case, when your client asks the remote listener for establishing a session, the listener will not spawn any new process: it will simply tell your user process a port number on which a pre-started dispatcher process is listening. Your user process will then send the sql statements to the dispatcher, and the dispatcher puts the request in a common input queue. All the shared server processes are continuosly monitoring the common queue and pick up requests for executing the work. When the work is done, the result will be putted in the response queue of the dispatcher which made the request and the dispatcher fetches the result back to the user process.

MTS are used when the number of connections made to the db is so high that spawning a dedicated server process for each session will reduce the server performance due to the continuos context switches the OS has to do for mantaining all the processes active.

robotronic

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asadmin-delete-iiop-listener

asadmin-delete-iiop-listener(1AS)				   User Commands				 asadmin-delete-iiop-listener(1AS)

NAME

       asadmin-delete-iiop-listener, delete-iiop-listener - removes the IIOP listener

SYNOPSIS

       delete-iiop-listener --user admin_user [--password admin_password] [--host localhost] [--port 4848] [--secure|-s] [--passwordfile filename]
       [--terse=false ] [--echo=false ] [--interactive=true ] listener_ID

       Removes the IIOP listener. This command is supported in remote mode only.

OPTIONS

       --user		       authorized domain application server administrative username.

       --password	       password to administer the domain application server.

       --host		       machine name where the domain application server is running.

       --port		       port number of the domain application server listening for administration requests.

       --secure 	       if true, uses SSL/TLS to communicate with the domain application server.

       --passwordfile	       file containing the domain application server password.

       --terse		       indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well-
			       formatted data for consumption by a script. Default is false.

       --echo		       setting to true will echo the command line statement on the standard output. Default is false.

       --interactive	       if set to true (default), only the required password options are prompted.

OPERANDS

       listener_id	       unique identifier for the IIOP listener to be deleted.

       Example 1: Using delete-iiop-listener

       asadmin> delete-iiop-listener --user admin --password adminadmin
       --host fuyako --port 7070 sample_iiop_listener
       Command delete-iiop-listener executed successfully

       Where: sample_iiop_listener is the IIOP listener deleted.

EXIT STATUS

       0		       command executed successfully

       1		       error in executing the command

       asadmin-create-iiop-listener(1AS), asadmin-list-iiop-listeners(1AS)

J2EE 1.4 SDK							    March 2004					 asadmin-delete-iiop-listener(1AS)