DC综合：File is not a DB file. (DB-1)

各位大侠, 小弟在用DC综合时碰到如下怪象：

1）综合过程顺利通过，基本满足设计要求
2）诸如如下：Error: File is not a DB file. (DB-1)的error不断报出

在下久思未解，敢请坛子中的大侠指点迷津，多谢！

……
Presto compilation completed successfully.
Current design is now '/iggroup/home/phuang/labs/DC1_2009.06/lab2/rtl/TOP.db:TOP'
Loading db file '/iggroup/home/phuang/labs/DC1_2009.06/lab2'
Error: File is not a DB file. (DB-1)
Error: The file '/iggroup/home/phuang/labs/DC1_2009.06/lab2' is not a DB file.
Loading db file '/CAD/Synopsys/Syn_vC-2009.06-SP4/libraries/syn'
Error: File is not a DB file. (DB-1)
Error: The file '/CAD/Synopsys/Syn_vC-2009.06-SP4/libraries/syn' is not a DB file.
Loading db file '/CAD/Synopsys/Syn_vC-2009.06-SP4/dw/syn_ver'
Error: File is not a DB file. (DB-1)
Error: The file '/CAD/Synopsys/Syn_vC-2009.06-SP4/dw/syn_ver' is not a DB file.
Loading db file '/CAD/Synopsys/Syn_vC-2009.06-SP4/dw/sim_ver'
Error: File is not a DB file. (DB-1)
Error: The file '/CAD/Synopsys/Syn_vC-2009.06-SP4/dw/sim_ver' is not a DB file.
Loading db file '/iggroup/home/phuang/labs/DC1_2009.06/ref/db'
Error: File is not a DB file. (DB-1)
Error: The file '/iggroup/home/phuang/labs/DC1_2009.06/ref/db' is not a DB file.
Loading db file '/iggroup/home/phuang/labs/DC1_2009.06/lab2/scripts'
Error: File is not a DB file. (DB-1)
Error: The file '/iggroup/home/phuang/labs/DC1_2009.06/lab2/scripts' is not a DB file.
Loading db file '/iggroup/home/phuang/labs/DC1_2009.06/lab2/rtl'
Error: File is not a DB file. (DB-1)

…………

文件类型不对吧

db文件時是*.db格式，需要寫出你需要db文件的路徑

check the following env settings are set.
search_path
target_library
link_library

我也碰到了同样的问题！解决办法是将在/home下的工作文件，放置到/usr下即可！