A Db2 instance is an environment responsible for managing system resources and the databases that fall under their control. Basically, an instance is made up of a set of processes, threads, and memory areas. The following diagram illustrates the relationship between a Db2 server, its instances, and its associated databases:
The server is at the highest level in the hierarchy, and you can have multiple Db2 versions installed on a given server. It is recommended that you check the system requirements for IBM Db2 for Linux, Unix, and Windows installations at https://www-01.ibm.com/support/docview.wss?uid=swg27038033.
Instances are second in the hierarchy and are responsible for managing the system resources required to run the database. You can create multiple instances on a server, providing a unique...