DB2 进入静默状态后，通过TOAD仍然可以连接，为什么？

DB2 V9.5 TOAD version6.1
通过以下命令进入静默状态后，通过TOAD仍然可以进行连接：
db2 terminate
db2 connect to test
db2 quiesce db immediate force connections
db2 terminate
db2 deactivate db test

在数据库所在的机上执行：
db2 connect to test user ceshi using ceshi
提示:
SQL20157N User with authorization ID "CESHI" failed to attach to a quiesced
instance, or connect to a quiesced database or a database in a quiesced
instance which is in the following quiesce mode: "QUIESCE DATABASE"
SQLSTATE=

但是通过toad进行连接，使用ceshi是可以进行连接的。请高手指点下为什么？？
多谢！