about listeners for different databases in the same ORACLE_HOME
Hello experts, I have a doubt
I have installed 3 different databases in the same server which OS is Suse Enterprise 10. At this moment I have just one listener that registers all the services. The number of connections are big for two of the three databases so I do not know what might be the best practices for this environment. I have some question I would like you suggestion for me:
DB version: 11.1.0.7
Should I have three listener, one for each database?
Is a good practice to have only one listener for multiple instances in the same server?
Are there differents between have only one listener for all the instance and have one listener for instance?
What about the performance?
Than you in advance, I hope you can guide me.