我可以使用以下命令登录我的 oracle 实例sqlplus：
$ env | grep -E '(TWO|SID)'
TWO_TASK=TEST
$ sqlplus me/my_password@TEST
然后我可以毫无问题地运行以下查询：
select
persons.person.key AS id,
persons.person.lname as lastname,
persons.person.fname as firstname,
sid.organizations.org_code as org,
sid.organizations.division_code as division,
sid.organizations.directorate_code as directorate,
persons.person.status as status
from
persons.person,
sid.organizations
where
persons.person.dept_id=sid.organizations.org_id;
但是，在我的 python 代码中，使用cx_Oracle, 和以下代码（即相同的查询）：
def get_oracle( user, password, tns='TEST' ):
db = cx_Oracle.connect( user, password, tns )
cursor = db.cursor()
return cursor
db = get_oracle( 'me', 'my_pass' )
db.execute("""
select
persons.person.key AS id,
persons.person.lname as lastname,
persons.person.fname as firstname,
sid.organizations.org_code as org,
sid.organizations.division_code as division,
sid.organizations.directorate_code as directorate,
persons.person.status as status
from
persons.person,
sid.organizations
where
persons.person.dept_id=sid.organizations.org_id;
""")
for r in db:
pass
结果得到以下错误：
cx_Oracle.DatabaseError: ORA-00911: invalid character
我很确定我的连接很好，因为其他查询工作正常。