A very simple asynchronous wrapper that allows you to get access to the Oracle database in asyncio programs.
Easy to use , buy may not the best practice for efficiency concern.
In parallel with the main branch, we have worked on a development version based on SQLAlchemy's thread pool management facilities, please refer to Development notes for details.
- cx_Oracle >= 8.1.0 (Take into consideration that author of cx_Oracle said he's trying to implement asyncio support , APIs maybe change in future version. Switch to 8.1.0 if there's something wrong makes it not gonna work.)
- ThreadPoolExecutorPlus >= 0.2.0
pip install cx_Oracle_async
- Nearly all the same as aiomysql in asynchronous operational approach , with limited cx_Oracle feature support.
- No automaticly date format transition built-in.
- AQ feature added , check docs here for further information.
- You can modify some of the connection properties simply like you're using cx_Oracle.
- You can do basic insert / select / delete etc.
- If you're connecting to database which is on a different machine from python process , you need to install oracle client module in order to use this library. Check cx-Oracle's installation guide for further information.
https://cx_oracle_async.readthedocs.io
| query type | asynchronous multithreading | synchronous multithreading | synchronous single thread |
|---|---|---|---|
| fast single line query | 6259.80 q/s | 28906.93 q/s | 14805.61 q/s |
| single line insertion | 1341.88 q/s | 1898 q/s | 1685.17 q/s |
/* Test platform: */
AMD Ryzen 3700x
Windows 10 LTSC
Oracle 19c
You can find performance test codes here.
Before running examples , make sure you've already installed a Oracle Client on your machine.
# basic_usages.py
import asyncio
import cx_Oracle_async
async def main():
oracle_pool = await cx_Oracle_async.create_pool(
host='localhost',
port='1521',
user='user',
password='password',
service_name='orcl',
min = 2,
max = 4,
)
async with oracle_pool.acquire() as connection:
async with connection.cursor() as cursor:
await cursor.execute("SELECT * FROM V$SESSION")
print(await cursor.fetchall())
await oracle_pool.close()
if __name__ == '__main__':
asyncio.run(main())