What is a data port?

Hello

I'm confused at first data ports. The ports of database the same as the listener ports?

I have 15 databases on our windows 2003 server. Combination of 9i, 10g, 11g

It has 3 types of headphones for 9i, 10g and 11g.

5 Database 9i uses listener9i with port 1521 = > does that mean their database port is 1521?
5 10 g database using listener10g with port 1522 = > does that mean their database port is 1522?
5 11 g database using listener11g with port 1523 = > does that mean their database port is 1523?

If I merge all 3 headphones in the earphone of 11g with port 1523. Does this mean all my 15 databases has the same port which is 1523?

Is it possible that 1 database can be registered 3 listeners, so it can have 3 different ports?

It follows, then, that the port of the database is not send to each database?



Thank you

Published by: 843228 on April 11, 2011 03:19

843228 wrote:
Hello

I'm confused at first data ports. The ports of database the same as the listener ports?

I have 15 databases on our windows 2003 server. Combination of 9i, 10g, 11g

It has 3 types of headphones for 9i, 10g and 11g.

5 Database 9i uses listener9i with port 1521 ===> is does that mean their database port is 1521?
5 10 g database using listener10g with port 1522 ===> is does that mean their database port is 1522?
5 11 g database using listener11g with port 1523 ===> is does that mean their database port is 1523?

If I merge all 3 headphones in the earphone of 11g with port 1523. Does this mean all my 15 databases has the same port which is 1523?

Is it possible that 1 database can be registered 3 listeners, so it can have 3 different ports?

It follows, then, that the port of the database is not send to each database?

Thank you

Published by: 843228 on April 11, 2011 03:19

the fundamental flaw in your thinking is that databases do not use ports at all! The listener uses a port to listen for connection requests. A listener, with the default LISTENER name, running an oracle home, listening on a single port, use easily - is designed to serve--multiple instances of database in several versions of several houses. It is unnecessary complexity to try to have several headphones or to name the listener as if she belongs to a customer or a specific database. It's like the telephone company, to build a separate table for each customer.

Tags: Database

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