Q15: What is the significance of LDAP Schema 1 and LDAP Schema 2 for Java ES?

Answer: Java ES solutions that use Directory Server can use either of two versions of a standard LDAP schema: Schema 1 or Schema 2. An explanation of the schema issues for Java ES is contained in Developing Your User Management Specifications in Sun Java Enterprise System 5 Installation Planning Guide. More extensive schema instructions are contained in the Directory Server documentation Designing a Directory Schema in Sun Java System Directory Server Enterprise Edition 6.0 Deployment Planning Guide and the Access Manager documentation To Add Indexes to Directory Server in Sun Java System Access Manager 7.1 Postinstallation Guide.

The installation process configures the directory for the specified schema as follows:

• To establish a Schema 1 directory, install Directory Server. Schema 1 is the default schema version.

• To establish a Schema 2 directory, install Directory Server and Access Manager. Installing Access Manager modifies the directory and converts a Schema 1 directory to a Schema 2 directory. Schema 2 supports the Access Manager single sign-on feature. If your solution includes Access Manager, you must use Schema 2.