with multiprocessing, you have to make sure you are using an empty
engine at the start of each process, or have otherwise arranged for
connections to be refreshed in the new process; the database connections
in an engine are pooled, and if you transfer those connections to a new
process it will fail.
See the guidelines at
http://docs.sqlalchemy.org/en/rel_1_1/core/pooling.html#using-connection-pools-with-multiprocessing
for how to do this.
On 03/10/2017 11:11 AM, Emeka Chibuzor wrote:
I get ORA-03113 all the time both using sqlalchemy raw sql and using
Sqlalchemy to select. Can some one help me to check if they is a problem
with my connection string or if they is some thing Missing.
def connect():
try:
return cx_Oracle.Connection(connstring)
except Exception, e:
print e
def getEngine():
try:
return create_engine('oracle://', creator=connect) #, echo=True
except Exception, e:
print e
def createSession():
Session = sessionmaker(bind=getEngine(), autocommit=True,
expire_on_commit=False)
return Session()
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http://www.sqlalchemy.org/
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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.
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