---
title: "Python 的 cx_Oracle 模块"
date: 2019-10-30T17:55:41+08:00
lastmod: 2019-10-30T17:55:41+08:00
tags: ["python", "cx_oracle"]
categories: ["python"]
---

# 导入 cx_Oracle 模块
```
import cx_Oracle    # 导入模块
```

# 连接数据库
```
db = cx_Oracle.connect('user', 'password', 'host:port/SID') #建立连接,3个参数分开写
print db.version
#输出 10.2.0.1.0 测试成功
```

# 自动提交
```
db.autocommit=True #开启自动提交
db.autocommit=False #关闭自动提交
```

# 建立 cursor 光标
```
cursor = db.cursor()    #建立一个cursor
```

# 执行sql
```
cursor.execute(‘select * from tabs’)    # 执行一条sql
sql = "insert into person(name, age, telephone) values(%s, %s, %s)"
tmp = (('ninini', 89, '888999'), ('koko', 900, '999999'))
conn.executemany(sql, tmp) #执行多条sql
```

# 获取执行结果
```
row=cursor.fetchone() #取一行结果，元组(a,b,c,d)
row=cursor.fetchall() #获取所有结果，列表[(a,b,c,d),(e,f,g,h),...]
for x in row:
    For y in x:
        Print y
print cursor.rowcount() #获取输出记录数量
```

# 提交
```
db.commit()
```

# 回滚
```
db.rollback()
```

# 关闭连接
```
cursor.close()
db.close()
```