During the creation of a database within an instance, the database is automatically registered in LDAP. Registration allows remote client connection to the database without having to catalog the database and node on the local machine. When a client attempts to connect to a database, if the database does not exist in the database directory on the local machine then the LDAP directory is searched.
If the name already exists in the LDAP directory, the database is still created on the local machine but a warning message is returned stating the naming conflict in the LDAP directory. For this reason you can manually catalog a database in the LDAP directory. The user can register databases on a remote server in LDAP by using the CATALOG LDAP DATABASE command. When registering a remote database, you specify the name of the LDAP node that represents the remote database server. You must register the remote database server in LDAP using the REGISTER DB2 SERVER IN LDAP command before registering the database.
To register a database manually in LDAP, use the CATALOG LDAP DATABASE command:
db2 catalog ldap database <dbname>
at node <node_name>
with "My LDAP database"