Python3使用ibm-db 连接DB2 执行sql 时报错 SQLCODE=-332 codepage转换错误，现在不能修改DB2 server的设置，请问怎么解决？
代码如下：
import ibm_db
conn=ibm_db.connect("DATABASE=db;HOSTNAME=host;PORT=60000;PROTOCOL=TCPIP;UID=user;PWD=pwd",'','')
sql = "SELECT * FROM T_PATENTINFO"
stmt = ibm_db.exec_immediate(conn, sql)
result = ibm_db.fetch_tuple(stmt)
print(result)
错误信息：
Traceback (most recent call last):
File "C:\Users\xux\AppData\Local\Programs\Python\Python37\lib\site-packages\ibm_db_dbi.py", line 1434, in _fetch_helper
row = ibm_db.fetch_tuple(self.stmt_handler)
SQLCODE=-332
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:/PythonRepo/patent/db_fixture/ibm_db_connect.py", line 53, in <module>
rresult = DB().search_patent()
File "C:/PythonRepo/patent/db_fixture/ibm_db_connect.py", line 44, in search_patent
result = self.cursor.fetchone()
File "C:\Users\xux\AppData\Local\Programs\Python\Python37\lib\site-packages\ibm_db_dbi.py", line 1460, in fetchone
row_list = self._fetch_helper(1)
File "C:\Users\xux\AppData\Local\Programs\Python\Python37\lib\site-packages\ibm_db_dbi.py", line 1441, in _fetch_helper
raise self.messages[len(self.messages) - 1]
SQLCODE=-332