[sqlalchemy] SQLAlchemy opened connection on shutdown Oracle server

2010-12-20 Thread Borax
Hi, I have a Python application (using Zope 3 framework) which is connected to an Oracle database throught SQLAlchemy. Everything is OK except for one thing : each week, the Oracle server is shutted down for a full cold backup and afterwards, opened SQLAlchemy connections are broken and can't be

Re: [sqlalchemy] SQLAlchemy opened connection on shutdown Oracle server

2010-12-20 Thread Michael Bayer
This is a classic use case for pool_recycle=some number of seconds , which will prevent old connections in the pool from being used. It does of course assume that connections remain checked into the pool when not being used (i.e. no Sessions hanging open, etc).

Re: [sqlalchemy] SQLAlchemy opened connection on shutdown Oracle server

2010-12-20 Thread Thierry Florac
Yes, that's what I thought... I actually use a pool_recycle parameter of 3600 to recycle active connections every hour, but the problem remains the same as before (with default value of -1). So I'm a bit stuck :-( Regards, Thierry 2010/12/20 Michael Bayer mike...@zzzcomputing.com: This is a