If you have an M3 Business Engine database that you want to attach to your environment, you must first attach a database middleware to the node hosting the database. Then the task Attach M3 BE Database can be run on this node. This method can be useful when upgrading from an older M3 Business Engine version, or if you want to attach a backup of a database to your environment.
Optionally, you can first create an empty database. Create a database to attach to M3 Business Engine This way, you can create a database according to alternative standards, using features like Automatic Storage Management (ASM), that is not supported when you create an M3 database using LifeCycle Manager.