Hm, it does fix the errors in my test-programm. However, I'm still getting an anonymous Segmentation Fault in my app with it. I's quite strange.
Quoting Michael Bayer <[EMAIL PROTECTED]>: > just did a google for "cx_oracle threadsafe" and came up with this: > > http://mail.python.org/pipermail/db-sig/2004-January/003897.html > > but then there also seems to be a more improved way as of 4.0.1 which > is this: > > http://starship.python.net/crew/atuining/cx_Oracle/html/module.html > > So, threading support is false by default since it has a 10-15% > performance hit. would we like this flag to be on by default ? > > heres a patch to apply to oracle.py in the 0.1 series, which will add > 'threaded' as a keyword parameter to oracle's create_engine. try > setting it to true and see if that fixes your problem: > > --- lib/sqlalchemy/databases/oracle.py (revision 1407) > +++ lib/sqlalchemy/databases/oracle.py (working copy) > @@ -106,9 +106,10 @@ > ]} > > class OracleSQLEngine(ansisql.ANSISQLEngine): > - def __init__(self, opts, use_ansi = True, module = None, **params): > + def __init__(self, opts, use_ansi = True, module = None, > threaded=False, **params): > self._use_ansi = use_ansi > self.opts = self._translate_connect_args((None, 'dsn', > 'user', 'password'), opts) > + self.opts['threaded'] = threaded > if module is None: > self.module = cx_Oracle > else: > > > > On May 15, 2006, at 10:13 AM, Florian Boesch wrote: > > > Hi, > > > > Selecting from multiple threads with thread-count > 10 my app: > > * crashes without any error message > > * starts spweing out > > cx_Oracle.DatabaseError: Error while trying to retrieve text for > > error ORA-12520 > > * crashes with: > > *** glibc detected *** double free or corruption (fasttop): > > 0x3eeff0b8 *** > > * all of the above > > > > With 10 threads it seems to run rock-solid. With 11 it gets the errors > > occasionally. with 50 it gets them quite reliably, with 200 you could > > practically bet on the errors to happen. Though they don't show up > > regularly, > > mostly they happen fast or not for a long time. > > > > I get the error as well on Linux as on Windows. > > > > Any ideas what I can do (other then limiting my web-server to 10 > > threads)? > > > > Example Atached > > > > Cheers, > > Florian > > > > > > > > <segmentation_fault.py> > > ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Sqlalchemy-users mailing list Sqlalchemy-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlalchemy-users
