Python 条连接到 Oracle 的记录

Question

我正在使用 Kenneth Ritz 的记录库连接到 Oracle。

db = records.Database('oracle://scott/tiger@localhost:1521/orcl')

但它总是抛出这个错误

DatabaseError: (cx_Oracle.DatabaseError) 
ORA-12545: Connect failed because target host 
or object does not exist.

但是，通过 SQL Plus 连接就可以了

sqlplus scott/tiger@localhost/orcl:1521

SQL*Plus: Release 12.1.0.1.0 Production on Sat Mar 11 17:29:19 2017

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Last Successful login time: Sat Mar 11 2017 17:16:24 +05:30

Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL>

有趣的观察

db = cx_Oracle.connect('scott/tiger@localhost:1521/orcl') **<--Works**

db.version
'12.1.0.1.0'

db = records.Database('oracle+cx_oracle://scott/tiger@localhost:1521/orcl')
doesn't work

知道我做错了什么吗？

Answer 1

records 依靠 sqlalchemy 来完成数据库的繁重工作。请参考SQLAlchemy documentation:

所以，URI 应该是这样的： oracle+cx_oracle://user:pass@localhost:1521/dbname

Python 条连接到 Oracle 的记录

Python records connecting to Oracle

cx-oracle

python-3.x

python-records