db2数据联邦基础命令   1.db2 编目节点:  www.2cto.com   db2 CATALOG TCPIP NODE <NODENAME> REMOTE <IP> SERVER  50000 REMOTE_INSTANCE DB2 OSTYPE AIX  取消编目节点:  db2 uncatalog node <node_name>    2.db2 编目数据库:  db2 CATALOG DATABASE <dbname> AS <dbaliasname> AT NODE <NODENAME> AUTHENTICATION SERVER  取消编目数据库:  db2 uncatalog database <db_name>    3.创建wrappers  create wrapper localda library 'libdb2drda.so'    www.2cto.com   4.创建server  CREATE SERVER <SERVERNAME>  TYPE DB2 / UDB  VERSION '9.1'  WRAPPER LOCALDA  AUTHORIZATION <SCHEMANAME>  PASSWORD 154221348321515183610552  OPTIONS  ( ADD NODE <nodename> ,  ADD DBNAME <dbname>  ) @    5.创建 nickname  CREATE NICKNAME <nickname>  FOR <SERVERNAME>.<SCHEMANAME>.<tablename> @