Oracle EE 9.2.0.4 64 bit SunOS 5.8 64bit data warehouse db ~100gb right now, growing every month no partitioning yet Just verified that you can drop an index when its underlying tablespace is in read-only mode. It happened when an ETL job ran second time, by mistake. The corresponding tables, also on read-only tablespaces, survived ok the truncate op. So, what can I do to foolproof my ETL, so that the indexes are not dropped by mistake next time? Thanks, -Carmen Rusu Oracle DBA -- //www.freelists.org/webpage/oracle-l