使用ODBC连接db2数据库

如果使用Pythono的ibm-db库，则3.1以上版本会自动下载odbc的驱动，本文提供只使用odbc连接db2的方式。

1、下载驱动

下载地址：linuxx64_odbc_cli.tar.gz 解压到python的sit-packages目录下。

curl https://public.dhe.ibm.com/ibmdl/export/pub/software/data/db2/drivers/odbc_cli/linuxx64_odbc_cli.tar.gz | tar -zx -C /usr/python/lib/python3.11/site-packages

2、配置/etc/odbc.ini

[DB2]
Description     = IBM DB2 Adapter
Driver          = /usr/python/lib/python3.11/site-packages/clidriver/lib/libdb2.so
FileUsage       = 1
DontDLClose     = 1
CPTimeout       = 1000
CPTimeToLive    = 100
Threading       = 2
Pooling         = Yes

配置环境变量 export ODBCINI=/etc/odbc.ini

3、使用Python的pyodbc连接db2数据库：

import pyodbc

# 数据库信息示例
ip = '192.168.236.171'
port = 50001
user = 'db2inst1'
password = 'db2inst1'
database = 'ss105'

# 创建连接
DRIVER = 'DB2'
conn_str = "DRIVER=%s;DATABASE=%s;HOSTNAME=%s;PORT=%d;PROTOCOL=TCPIP;UID=%s;PWD=%s;" % (DRIVER, database, ip, port, user, password)

conn = pyodbc.connect(conn_str)
cursor = conn.cursor()
cursor.execute("select application_id(),mon_get_application_handle() from sysibm.dual")
print(cursor.fetchall())
cursor.close()
conn.close()