The database object name is referred to as its identifier. Everything in Microsoft SQL Server can have an identifier. Servers, databases, and database objects, such as tables, views, columns, indexes, triggers, procedures, constraints, and rules, can have identifiers.

What is DB ID in Oracle?

The DBID is a very important part for Oracle databases. It is an internal, uniquely generated number that differentiates databases. Oracle creates this number automatically as soon as you create the database. During normal operation, it is quite easy to find your DBID.

How can I change database ID?

If the database id is taken you need to detach the database that already has it. Create the database you want to have it and then re-attach the database which originally had it. Then delete your row and reinsert it with different identity.