I have tried below approach in SQLAlchemy 1.3.16. Use a creator function - if you need to use special form when calling cx_oracle.connect(), a creator function will allow you to plug into the Engine how cx_oracle connections are established.
The creator function, that i associated would internally perform a cx_Oracle.SessionPool.acquire(), where SessionPool is created with a fixed number of static connections. How can we ensure that the connections are released and reused from this SessionPool when using SQLAlchemy Session object in a flask application across API requests? Thanks, Anupama On Wednesday, December 9, 2020 at 5:52:26 PM UTC-7 Anupama Goparaju wrote: > Hi. > > I would like to know how to use a cx-oracle SessionPool with SQLAlchemy. > We are leveraging the Session object of SQLAlchemy but we would like to > use the driver level pooling instead of SQLAlchemy pool. > Please advise. > > Thanks, > Anupama > > On Monday, October 3, 2011 at 12:23:58 PM UTC-6 Mike Bayer wrote: > >> >> On Oct 3, 2011, at 2:20 PM, Michael Bayer wrote: >> >> > >> > 3. Use pool events to emit commands when connections are checked out or >> checked in. If you need to emit some SQL or cx_oracle commands on the DBAPI >> connection upon checkout or checkin, the Engine provides pool events which >> accomplish this. They work with NullPool as well as the regular QueuePool. >> > >> > http://www.sqlalchemy.org/docs/core/events.html#connection-pool-events >> >> in 0.6 you'd use PoolListener, same idea just older API: >> >> >> http://www.sqlalchemy.org/docs/06/core/interfaces.html#connection-pool-events >> >> -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sqlalchemy/34851672-66ae-424e-b0d4-3cbdaeb369fan%40googlegroups.com.
