> According to Bug 7140600, the error ORA-54 is due to contention on > JI lock. How about you disable the auto stats job and schedule that > through OS, as a UNIX cron job or Windows scheduled task? Ignore that. There're four lock types named like J_. All but JI are about jobs. JI is about "Materialized View" according to v$lock_type. If it were related to a job, my suggestion would make sense. Sorry for my mistake. Yong Huang -- //www.freelists.org/webpage/oracle-l