Description of the illustration sagug_vm_012.eps

This figure shows three steps in the lifecycle:

Step 1 is create test master. In this step, clone PDB1, which is a database in the Production system, and migrate it to the test master CDB; prepare PDB1TM1 to be the snapshot test master; and close PDB1TM1 and open it read-only.

Step 2 is create snapshots. In this step, create snapshot PDBs to use for development and testing.

Step 3 is refresh test master. In this step, drop the snapshots and the test master PDB1TM1, and start again at step 1.