In a single server, there can be multiple instances of Oracle/MSSQL database. Each instance is counted for licensing in Applications Manager.
Example 1:![](https://pitstop.manageengine.com/galleryDocuments/edbsn7da4527f7f2ca77714d4a3e57610e0682644fa20b6a8a70707a46e9ca5561f099c2bd028942d63ec7fd96b04ef56b35f?inline=true)
In the above image, you can see that there are 3 instances of MS SQL DBs in a single server, namely MSSQLSERVER, SQL008R2, SQLEXP2016.
These 3 databases are considered as 3 different monitors even though it is in a single host.
Example 2:
Similarly, each of the above mentioned Oracle database instances will be considered as individual monitors for licencing.