Looks like Oracle is still diligently working it. It's an 11g bug. Bug 7308054. Can you compare the function names in your trace file to those in that bug? Show a few from error handlers down. Yong Huang > Date: Fri, 22 Aug 2008 11:52:40 -0400 > From: Stuart Blackburn <sblackbu@xxxxxxxxx> > Subject: OCI-24550 > > One of the developers here is trying to create a connection pool to an > Oracle 10gR2 database from an 11G client and he is receiving an > OCI-24550 error. There is no documentation on this error on Metalink > and googling it returns almost nothing. Just wondering if anyone else > has encountered any problems with this error? Thanks. > > Stuart -- //www.freelists.org/webpage/oracle-l