CA APM: What does "Oracle DB" mean?

[Carlos Hugo Martin Carranza Olivera]

Hello everyone,
In the Backends category there is a sub category called "Oracle DB", do you know what it means?

[Junaid Wahab]

The Backends node of the metric browser tree contains a node for each backend, including those automatically detected by Introscope, or marked explicitly as a backend during ProbeBuilding.

Backends are most commonly a database, but may be any external system such as a mail server, a transaction processing system (such as IBM CICS or BEA Tuxedo), or a messaging system (such as MQSeries).

 

The backend name is a concatenation of the Oracle SID string, the database host and port delimited by a hyphen, and the string (Oracle DB),

same as

DB/2

Microsoft SQL Server etc.

[Carlos Hugo Martin Carranza Olivera]

Thanks for your reply.
But what does it mean that only "Oracle DB" appears? Is a grouping of the other connections to the databases?