如何通过Flask gracefuly使用cx_Oracle会话池？

pip install flask cx_Oracle

from flask import Flask
import cx_Oracle
from cx_Oracle import SessionPool

oracle_config = {
    'user': 'your_username',
    'password': 'your_password',
    'dsn': 'your_dsn',
    'min': 2,
    'max': 5,
    'increment': 1,
    'encoding': 'UTF-8'
}

session_pool = SessionPool(**oracle_config)

app = Flask(__name__)

@app.route('/')
def index():
    connection = session_pool.acquire()
    cursor = connection.cursor()
    # 执行数据库操作
    # ...
    cursor.close()
    session_pool.release(connection)
    return 'Hello, World!'

if __name__ == '__main__':
    app.run()