location of the file tnsnames.ora and Listener.ora

Hello

env: Oracle 11 g 2 - Orable Linux 6.2 64bits

I set up a database for the client server. I installed IM and the House according to the standards of the Oracle RDBMS. Then I configured the listener to run BOF IM home. If the location of the 'ora, tnsnames' and 'listener.ora' files is $GI_HOME/network/admin.

Customer's DBA is asking me to conform to the standard for the location of these two files. Here's what he asked for:

/ opt/oracle/owner = oracle, group = s/n (755 permissions)

/ var/opt/oracle owner = oracle, group = s/n (755 permissions)

  • -touch /var/opt/oracle/listener.ora
  • -touch /var/opt/oracle/tnsnames.ora
  • -chown oracle: dba /var/opt/oracle/listener.ora
  • -chown oracle: dba /var/opt/oracle/tnsnames.ora
  • -s /var/opt/oracle/tnsnames.ora /etc/tnsnames.ora ln
  • -s /var/opt/oracle/listener.ora /etc/listener.ora ln

I'm completely lost here. I don't know if I'm moving these two files in the folder "/ etc", how the LISTENER know about the presence of these files in ' / etc '.

His reason for this is to support the possibility of having several houses of Oracle's RDBMS. I don't know what he's talking about.

Please notify.

Best regards

user130038 wrote:

Thanks to you two!

So basically this DBA do not like to follow standards of Oracle but his own.

BINGO!

What is the problem with the help of $ORACLE_HOME/network/admin for these two files if there were several homes of oracle on a server? Sorry I never got to work on a server with multiple oracle homes, so I have no idea.

The 'standard' with several houses installation is to run the listener from the version the most recent House.  If all of the houses are of the same version (putting aside the question of 'why'), then just pick one that is going to be home for the listener.  If the installation program uses the Grid Infrastructure (ASM and/or Oracle Restart), you must run the listener from the House of IM, not House the database.

There are some key things to consider here.

1. the auditor is to receive and process applications for connecting customers.  This is why the listener has no meaning on the Server.  Similarly, its configuration file, listener.ora, only makes sense on the server.

1a. a single listener, using the default name of the LISTENER and the unique default port of 1521 is quite capable of--indeed, we wanted to - several multiple databases editions of multiple service homes.

2. the tnsnames.ora file provides a name resolution and address customers.  So it has the sense that on the client computer.

2. when a database uses a db link to access a different database, the first database acts as a client to the second - as with any other LDAP client.

Best regards

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