OERI[17069] means that Oracle failed to pin a library cache object after 50 attempts. Can happen in a long-running process if a dependent object has been dropped or recompiled. A few known bugs manifest with this error, but all of them seem to be fixed in 9.2.0.8. If you have any invalid PL/SQL objects, try recompiling them and see if the error persists. If this error is repeatable, and recompilation of invalid objects doesn't get rid of it, examine associated trace files and, if you have Oracle support account, submit them to OSS for analysis.