DB2 学习笔记 - AIView.com

DB2 automatically catalogs databases when they are created. It catalogs an entry
for the database in the local database directory and another entry in the system
database directory. If the database is created from a remote client (or a client which
is executing from a different instance on the same machine), an entry is also made
in the system database directory at the client instance.

Databases on the same node as the database manager instance are cataloged as
indirect entries. Databases on other nodes are cataloged as remote entries.

List DBs in Local Database Directory

$ db2 list db directory on /path_to_where_db_created 

List DBs in System Database Directory

$ db2 list db directory