(DB2 Service Name) db2j_DB2及db2c_DB2

db2j_DB2 55000/tcp
db2c_DB2 50000/tcp

改成其他PORT(如50100):
db2 UPDATE DBM CFG USING SVCENAME 50100

ref:
http://tech.snathan.org/tech/db2/db2_install_on_windows#operating_system_security_for_db2_objects

http://www.ibm.com/developerworks/data/library/techarticle/dm-0410wright/