I looked at the code for ora_dbh_share in the DBD::Oracle sources after seeing your message(s) on the DBI mailing list, and there's some pretty heavy magic going on in there.

I'm not particularily surprised that it has broken with 5.8.2.

I'm currently working on thread-enabling DBD::Sybase, and I have some code that appears to work correctly with 5.8.1. I'm bulding 5.8.2 now to see if it'll work for me (tested with 15 threads issuing thousands of database requests concurrently under linux with Sybase 12.5.1.)

Note however that I won't attempt to share database handles between threads.

Michael