The upgrade of Java DB software to Java ES Release 5U1 takes into account the following considerations:
In a deployment architecture in which there are multiple instances of Java DB running on a single computer (all corresponding to the same installed Java DB image), you only have to upgrade the Java DB image once.
In a maintenance upgrade, you do not have to migrate schema, configuration, security or user data.
The Release 5U1 Java DB upgrade patches for Windows are shown in the following table: